From 9758389ad3e0038f27650c18388152151e2e322f Mon Sep 17 00:00:00 2001 From: qiancai Date: Thu, 25 Jun 2026 15:10:21 +0800 Subject: [PATCH 01/14] Squashed commit of the following: commit ee3bac0be6d921fa32a185b187c2ed0081050a32 Author: qiancai Date: Tue Jun 23 19:04:19 2026 +0800 add tidb-cloud-kernel-versioning_v2.md commit e868710979bbe5dfbd1f3e8a9ec3d808b3d30956 Author: qiancai Date: Thu Jun 18 17:56:39 2026 +0800 update versioning rules commit eb10774d66a6bef45c2dba318ff1ab7658e8f46c Author: qiancai Date: Mon Jun 8 15:32:01 2026 +0800 add tidb-cloud-kernel-versioning.md Co-Authored-By: Grace Cai --- TOC-tidb-cloud-releases.md | 11 ++- tidb-cloud/releases/_index.md | 25 ++++-- .../releases/tidb-cloud-kernel-versioning.md | 63 ++++++++++++++ .../tidb-cloud-kernel-versioning_v2.md | 52 +++++++++++ tidb-cloud/releases/tidb-x-cloud.202510.1.md | 87 +++++++++++++++++++ 5 files changed, 232 insertions(+), 6 deletions(-) create mode 100644 tidb-cloud/releases/tidb-cloud-kernel-versioning.md create mode 100644 tidb-cloud/releases/tidb-cloud-kernel-versioning_v2.md create mode 100644 tidb-cloud/releases/tidb-x-cloud.202510.1.md diff --git a/TOC-tidb-cloud-releases.md b/TOC-tidb-cloud-releases.md index 0c1e2ce823e75..7f5b422ab1d4e 100644 --- a/TOC-tidb-cloud-releases.md +++ b/TOC-tidb-cloud-releases.md @@ -3,7 +3,11 @@ # Table of Contents -## RELEASE NOTES +## OVERVIEW + +- [TiDB Cloud Release Overview](/tidb-cloud/releases/_index.md) + +## REGULAR CLOUD RELEASE NOTES - [2026](/tidb-cloud/releases/tidb-cloud-release-notes.md) - [2025](/tidb-cloud/releases/release-notes-2025.md) @@ -14,6 +18,11 @@ - [2021](/tidb-cloud/releases/release-notes-2021.md) - [2020](/tidb-cloud/releases/release-notes-2020.md) +## TiDB X KERNEL RELEASE NOTES + +- [TiDB X Kernel Versioning](/tidb-cloud/releases/tidb-cloud-kernel-versioning.md) +- [TiDB-X-CLOUD.202510.1 Release Notes](/tidb-cloud/releases/tidb-x-cloud.202510.1.md) + ## MAINTENANCE NOTIFICATIONS - [[2024-09-15] TiDB Cloud Console Maintenance Notification](/tidb-cloud/releases/notification-2024-09-15-console-maintenance.md) diff --git a/tidb-cloud/releases/_index.md b/tidb-cloud/releases/_index.md index 8aa2b1df1a0af..60a3a38a48f39 100644 --- a/tidb-cloud/releases/_index.md +++ b/tidb-cloud/releases/_index.md @@ -1,16 +1,31 @@ --- title: TiDB Cloud Releases -summary: Learn about TiDB Cloud release notes and maintenance notifications. +summary: Learn about TiDB Cloud release notes, kernel versioning, and maintenance notifications. --- # TiDB Cloud Releases -[TiDB Cloud](https://www.pingcap.com/tidb/cloud/) is a fully managed Database-as-a-Service (DBaaS) that brings [TiDB](https://docs.pingcap.com/tidb/stable/overview), an open-source Hybrid Transactional and Analytical Processing (HTAP) database, to your cloud. TiDB Cloud offers an easy way to deploy and manage databases to let you focus on your applications, not the complexities of databases. This document provides an overview of TiDB Cloud release notes and maintenance notifications. +[TiDB Cloud](https://www.pingcap.com/tidb/cloud/) is a fully managed Database-as-a-Service (DBaaS) that brings [TiDB](https://docs.pingcap.com/tidb/stable/overview), an open-source Hybrid Transactional and Analytical Processing (HTAP) database, to your cloud. -## Release notes +TiDB Cloud offers two types of releases: **cloud platform releases** and **database kernel releases**. They follow independent release cycles and are documented separately. -TiDB Cloud release notes provide information about new features and improvements in each release. For detailed release notes, see [TiDB Cloud Release Notes](/tidb-cloud/releases/tidb-cloud-release-notes.md). +## Cloud platform release notes + +Cloud platform releases cover the TiDB Cloud console, APIs, and control plane, including new plan features, UI changes, integrations, and operational improvements that apply across all TiDB Cloud plans. + +- [TiDB Cloud Release Notes](/tidb-cloud/releases/tidb-cloud-release-notes.md) + +## Database kernel release notes + +The database kernel is the core engine that processes your SQL queries and manages your data. Depending on your TiDB Cloud plan, your resources run on different kernels, each with its own release cadence and release notes. + +| Plan | Kernel | Release notes | +|------|--------|---------------| +| TiDB Cloud Starter, Essential, and Premium | TiDB X kernel (`TiDB-X-CLOUD.YYYYMM.x`) | TiDB X kernel release notes (see the navigation pane on the left) | +| TiDB Cloud Dedicated | Standard TiDB kernel (`vX.Y.Z`) | [TiDB Self-Managed release notes](/releases/release-notes.md) | + +For more information about the versioning schemes of these kernels, see [TiDB Cloud Kernel Versioning](/tidb-cloud/releases/tidb-cloud-kernel-versioning.md). ## Maintenance notifications -TiDB Cloud maintenance notifications provide information about scheduled maintenance activities that might affect your TiDB Cloud services. +TiDB Cloud maintenance notifications provide information about scheduled maintenance activities that might affect your TiDB Cloud services. For the list of notifications, see the navigation pane on the left. diff --git a/tidb-cloud/releases/tidb-cloud-kernel-versioning.md b/tidb-cloud/releases/tidb-cloud-kernel-versioning.md new file mode 100644 index 0000000000000..4bb1c0e51455b --- /dev/null +++ b/tidb-cloud/releases/tidb-cloud-kernel-versioning.md @@ -0,0 +1,63 @@ +--- +title: Kernel Versioning for TiDB Cloud +summary: Learn about the versioning rules, format, and release notes for different TiDB Cloud offerings. +--- + +# TiDB Cloud Kernel Versioning + +This document describes the versioning rules for the underlying database kernels used across different TiDB Cloud plans: Starter, Essential, Premium, and Dedicated. + +## Default kernel versions + +Based on your TiDB Cloud plan, your TiDB Cloud resources run on different different TiDB kernel versions: + +| Plan | Current default kernel version | +|-----------|--------------------------------| +| Starter | TiDB v8.5.3 | +| Essential | TiDB v8.5.3 | +| Premium | TiDB-X-CLOUD.202510.1 | +| Dedicated | TiDB v8.5.6 | + +The default kernel version is the TiDB version that is used by default for new instances or clusters. TiDB Cloud upgrades the default kernel version for newly created instances or clusters regularly to improve the security, stability, and performance of your TiDB Cloud resources. + +## Kernel versioning + +For TiDB Cloud Starter, Essential, and Dedicated, their kernel versions correspond directly to TiDB Self-Managed versions. To learn about features, improvements, and bug fixes included in a specific kernel version, refer to the corresponding [TiDB Self-Managed release notes](/releases/release-notes.md). + +For TiDB Cloud Premium, its kernel version follows a time-based versioning convention: + +```text +TiDB-X-CLOUD.YYYYMM.x +``` + +For example: + +```text +TiDB-X-CLOUD.202510.1 +``` + +Where: + +- `YYYYMM` represents the baseline code branch used to develop the kernel. For example, `202510` means that the baseline branch was created in October 2025. It does not indicate when the kernel version was released. +- `x` represents the patch release number for that baseline branch. + +For example, `TiDB-X-CLOUD.202510.1` means that the kernel is based on a branch created in October 2025 and is the first patch release built from that branch. + +Because kernel development and release schedules are independent, a kernel version might be released several months after its baseline branch is created. + +As the kernel of TiDB Cloud Premium follows its own release cadence and cycle, its release notes are published separately from the TiDB Self-Managed release notes. + +## FAQ + +### How do I check the kernel version of my TiDB Cloud resource? + +1. In the [TiDB Cloud console](https://tidbcloud.com/), navigate to the **My TiDB** page, and then click the name of your TiDB Cloud resource (such as an instance or cluster) to go to its overview page. +2. On the overview page, locate the **TiDB version** information in the details pane of your TiDB Cloud resource. + +### Can I choose the kernel version for my TiDB Cloud Starter, Essential, Premium instance, or TiDB Cloud Dedicated cluster? + +No. TiDB Cloud manages the entire kernel lifecycle for all plans. + +Although the kernel version is displayed for transparency, you cannot select a specific version when creating an instance or cluster. + +TiDB Cloud automatically provides validated kernel versions for new deployments and performs managed upgrades when appropriate. This helps ensure security, stability, compatibility, and access to the latest features and improvements without requiring manual maintenance. \ No newline at end of file diff --git a/tidb-cloud/releases/tidb-cloud-kernel-versioning_v2.md b/tidb-cloud/releases/tidb-cloud-kernel-versioning_v2.md new file mode 100644 index 0000000000000..88630e6662ac2 --- /dev/null +++ b/tidb-cloud/releases/tidb-cloud-kernel-versioning_v2.md @@ -0,0 +1,52 @@ +--- +title: Kernel Versioning for TiDB Cloud Premium +summary: Learn about the kernel versioning rules and format for TiDB Cloud Premium. +--- + +# Kernel Versioning for TiDB Cloud Premium + +This document describes the versioning rules for the underlying database kernel used by TiDB Cloud Premium. + +> **Note:** +> +> This document is applicable to TiDB Cloud Premium instances only. For TiDB Cloud Starter, Essential, and Dedicated, their kernel versions correspond directly to TiDB Self-Managed versions. To learn about features, improvements, and bug fixes included in a specific kernel version, refer to the corresponding [TiDB Self-Managed release notes](/releases/release-notes.md). + +## Kernel versioning + +TiDB Cloud Premium kernel versions use the following time-based format: + +```text +TiDB-X-CLOUD.YYYYMM.x +``` + +For example: + +```text +TiDB-X-CLOUD.202510.1 +``` + +Where: + +- `YYYYMM` represents the baseline code branch used to develop the kernel. For example, `202510` means that the baseline branch was created in October 2025. It does not indicate when the kernel version was released. +- `x` represents the patch release number for that baseline branch. + +For example, `TiDB-X-CLOUD.202510.1` indicates that the kernel is based on a branch created in October 2025 and is the first patch release built from that branch. + +Because kernel development and release schedules are independent, a kernel version might be released several months after its baseline branch is created. + +Because the kernel of TiDB Cloud Premium follows its own kernel release cadence and cycle, its release notes are published separately from the TiDB Self-Managed release notes. + +## FAQ + +### How do I check the kernel version of my TiDB Cloud Premium instance? + +1. In the [TiDB Cloud console](https://tidbcloud.com/), navigate to the **My TiDB** page, and then click the name of your TiDB Cloud Premium instance to go to its overview page. +2. On the overview page, locate the **TiDB version** information in the details pane of your TiDB Cloud Premium instance. + +### Can I choose the kernel version for my TiDB Cloud Premium instance? + +No. TiDB Cloud manages the entire kernel lifecycle for all plans. + +Although the kernel version is displayed for transparency, you cannot select a specific version when creating an instance or cluster. + +TiDB Cloud automatically provides validated kernel versions for new deployments and performs managed upgrades when appropriate. This helps ensure security, stability, compatibility, and access to the latest features and improvements without requiring manual maintenance. \ No newline at end of file diff --git a/tidb-cloud/releases/tidb-x-cloud.202510.1.md b/tidb-cloud/releases/tidb-x-cloud.202510.1.md new file mode 100644 index 0000000000000..7c8d527920aa4 --- /dev/null +++ b/tidb-cloud/releases/tidb-x-cloud.202510.1.md @@ -0,0 +1,87 @@ +--- +title: TiDB-X-CLOUD.202510.1 Release Notes +summary: Learn about the features for the TiDB-X-CLOUD.202510.1 kernel. +--- + +# TiDB-X-CLOUD.202510.1 Release Notes + +Release date: April 28, 2026 + +TiDB X kernel version: `TiDB-X-CLOUD.202510.1` + +{{{ .premium }}} is in public preview starting from April 28, 2026, using the` TiDB-X-CLOUD.202510.1` kernel. + +In `TiDB-X-CLOUD.202510.1`: + +- `202510` represents that the baseline code branch of this kernel version was created in October 2025, which is different from the release date. +- `1` represents that it is the first patch release for the TiDB-X-CLOUD.202510.0 kernel. + +The `TiDB-X-CLOUD.202510.1` kernel is based on the TiDB v8.5.0 kernel, which means it supports most of the features and improvements as the [TiDB v8.5.0](/release-notes/release-8.5.0.md) kernel. + +In addition, compared with the [TiDB v8.5.0](/release-notes/release-8.5.0.md) kernel, the `TiDB-X-CLOUD.202510.1` kernel introduces the following features: + +## New TiDB X architecture + +* Introduce the TiDB X architecture, which is a cloud-native shared-storage architecture that makes cloud-native object storage the backbone of TiDB. + + This architecture enables elastic scalability, predictable performance, and optimized total cost of ownership (TCO) for AI-era workloads. + + TiDB X represents a fundamental evolution from [classic TiDB](/tidb-architecture.md)'s shared-nothing architecture to a cloud-native shared-storage architecture. By transitioning from a shared-nothing to a shared-storage architecture, TiDB X addresses the physical limitations of coupled nodes to achieve the following technical objectives: + + - **Accelerated scaling**: Improving scaling performance by up to 10x by eliminating the need for physical data migration. + - **Task isolation**: Ensuring zero-interference between background maintenance tasks (such as compaction) and online transactional traffic. + - **Resource elasticity**: Implementing a true "pay-as-you-go" model where compute resources scale independently of storage volume. + + For more information, see [TiDB X Architecture](/tidb-cloud/tidb-x-architecture.md). + +## Performance features + +* Support redistributing data of a specific table (experimental) [#63260](https://github.com/pingcap/tidb/issues/63260) @[bufferflies](https://github.com/bufferflies) + + PD automatically schedules data to be distributed as evenly as possible across all TiKV nodes in a cluster. However, this automatic scheduling focuses on the cluster as a whole. In some cases, even if the cluster-wide data distribution is balanced, the data of a specific table might still be unevenly distributed across TiKV nodes. + + Starting from v8.5.4, you can use the [`SHOW TABLE DISTRIBUTION`](https://docs.pingcap.com/tidb/v8.5/sql-statement-show-table-distribution/) statement to check how the data of a specific table is distributed across all TiKV nodes. If the data distribution is unbalanced, you can use the [`DISTRIBUTE TABLE`](https://docs.pingcap.com/tidb/v8.5/sql-statement-distribute-table) statement to redistribute the table's data (experimental) to improve load balancing. + + Note that redistributing the data of a specific table is a one-time task with a timeout limit. If the distribution task is not completed before the timeout, it will automatically exit. + + For more information, see [documentation](https://docs.pingcap.com/tidb/v8.5/sql-statement-distribute-table). + +* Support `ANALYZE` embedded in DDL statements [#57948](https://github.com/pingcap/tidb/issues/57948) @[terry1purcell](https://github.com/terry1purcell) @[AilinKid](https://github.com/AilinKid) + + This feature applies to the following types of DDL statements: + + - DDL statements that create new indexes: [`ADD INDEX`](/sql-statements/sql-statement-add-index.md) + - DDL statements that reorganize existing indexes: [`MODIFY COLUMN`](/sql-statements/sql-statement-modify-column.md) and [`CHANGE COLUMN`](/sql-statements/sql-statement-change-column.md) + + When this feature is enabled, TiDB automatically runs an `ANALYZE` (statistics collection) operation before the new or reorganized index becomes visible to users. This prevents inaccurate optimizer estimates and potential plan changes caused by temporarily unavailable statistics after index creation or reorganization. + + For more information, see [documentation](https://docs.pingcap.com/tidb/v8.5/ddl_embedded_analyze). + +### Observability features + +* Add storage engine identifiers to statement summary tables and slow query logs [#61736](https://github.com/pingcap/tidb/issues/61736) @[henrybw](https://github.com/henrybw) + + When both TiKV and TiFlash are deployed in a cluster, users often need to filter SQL statements by storage engine during database diagnostics and performance optimization. For example, if TiFlash is under high load, users might need to identify SQL statements running on TiFlash to locate potential causes. To meet this need, starting from v8.5.5, TiDB adds storage engine identifier fields to statement summary tables and slow query logs. + + New fields in [statement summary tables](/statement-summary-tables.md): + + * `STORAGE_KV`: `1` indicates that the SQL statement accesses TiKV. + * `STORAGE_MPP`: `1` indicates that the SQL statement accesses TiFlash. + + New fields in [slow query logs](/identify-slow-queries.md): + + * `Storage_from_kv`: `true` indicates that the SQL statement accesses TiKV. + * `Storage_from_mpp`: `true` indicates that the SQL statement accesses TiFlash. + + This feature simplifies workflows in certain diagnostics and performance optimization scenarios and improves issue identification efficiency. + + For more information, see [Statement Summary Tables](/statement-summary-tables.md) and [Identify Slow Queries](/identify-slow-queries.md). + +## Limitation + +Because of the architecture difference between TiDB X and classic TiDB, the `TiDB-X-CLOUD.202510.1` kernel does not support the following storage features in TiDB v8.5.0 kernel: + +- [TiKV MVCC In-Memory Engine (IME)](/tikv-in-memory-engine.md) +- [Follower Read](/follower-read.md) + +To learn more about the limitations, see [Limited SQL features on TiDB Cloud](/tidb-cloud/limited-sql-features.md). \ No newline at end of file From 3ecfdfad49f4918bed97a33dab51419392422f5d Mon Sep 17 00:00:00 2001 From: qiancai Date: Thu, 25 Jun 2026 15:11:22 +0800 Subject: [PATCH 02/14] update tidb-cloud-kernel-versioning.md --- .../releases/tidb-cloud-kernel-versioning.md | 39 +++++--------- .../tidb-cloud-kernel-versioning_v2.md | 52 ------------------- 2 files changed, 14 insertions(+), 77 deletions(-) delete mode 100644 tidb-cloud/releases/tidb-cloud-kernel-versioning_v2.md diff --git a/tidb-cloud/releases/tidb-cloud-kernel-versioning.md b/tidb-cloud/releases/tidb-cloud-kernel-versioning.md index 4bb1c0e51455b..88630e6662ac2 100644 --- a/tidb-cloud/releases/tidb-cloud-kernel-versioning.md +++ b/tidb-cloud/releases/tidb-cloud-kernel-versioning.md @@ -1,30 +1,19 @@ --- -title: Kernel Versioning for TiDB Cloud -summary: Learn about the versioning rules, format, and release notes for different TiDB Cloud offerings. +title: Kernel Versioning for TiDB Cloud Premium +summary: Learn about the kernel versioning rules and format for TiDB Cloud Premium. --- -# TiDB Cloud Kernel Versioning +# Kernel Versioning for TiDB Cloud Premium -This document describes the versioning rules for the underlying database kernels used across different TiDB Cloud plans: Starter, Essential, Premium, and Dedicated. +This document describes the versioning rules for the underlying database kernel used by TiDB Cloud Premium. -## Default kernel versions - -Based on your TiDB Cloud plan, your TiDB Cloud resources run on different different TiDB kernel versions: - -| Plan | Current default kernel version | -|-----------|--------------------------------| -| Starter | TiDB v8.5.3 | -| Essential | TiDB v8.5.3 | -| Premium | TiDB-X-CLOUD.202510.1 | -| Dedicated | TiDB v8.5.6 | - -The default kernel version is the TiDB version that is used by default for new instances or clusters. TiDB Cloud upgrades the default kernel version for newly created instances or clusters regularly to improve the security, stability, and performance of your TiDB Cloud resources. +> **Note:** +> +> This document is applicable to TiDB Cloud Premium instances only. For TiDB Cloud Starter, Essential, and Dedicated, their kernel versions correspond directly to TiDB Self-Managed versions. To learn about features, improvements, and bug fixes included in a specific kernel version, refer to the corresponding [TiDB Self-Managed release notes](/releases/release-notes.md). ## Kernel versioning -For TiDB Cloud Starter, Essential, and Dedicated, their kernel versions correspond directly to TiDB Self-Managed versions. To learn about features, improvements, and bug fixes included in a specific kernel version, refer to the corresponding [TiDB Self-Managed release notes](/releases/release-notes.md). - -For TiDB Cloud Premium, its kernel version follows a time-based versioning convention: +TiDB Cloud Premium kernel versions use the following time-based format: ```text TiDB-X-CLOUD.YYYYMM.x @@ -41,20 +30,20 @@ Where: - `YYYYMM` represents the baseline code branch used to develop the kernel. For example, `202510` means that the baseline branch was created in October 2025. It does not indicate when the kernel version was released. - `x` represents the patch release number for that baseline branch. -For example, `TiDB-X-CLOUD.202510.1` means that the kernel is based on a branch created in October 2025 and is the first patch release built from that branch. +For example, `TiDB-X-CLOUD.202510.1` indicates that the kernel is based on a branch created in October 2025 and is the first patch release built from that branch. Because kernel development and release schedules are independent, a kernel version might be released several months after its baseline branch is created. -As the kernel of TiDB Cloud Premium follows its own release cadence and cycle, its release notes are published separately from the TiDB Self-Managed release notes. +Because the kernel of TiDB Cloud Premium follows its own kernel release cadence and cycle, its release notes are published separately from the TiDB Self-Managed release notes. ## FAQ -### How do I check the kernel version of my TiDB Cloud resource? +### How do I check the kernel version of my TiDB Cloud Premium instance? -1. In the [TiDB Cloud console](https://tidbcloud.com/), navigate to the **My TiDB** page, and then click the name of your TiDB Cloud resource (such as an instance or cluster) to go to its overview page. -2. On the overview page, locate the **TiDB version** information in the details pane of your TiDB Cloud resource. +1. In the [TiDB Cloud console](https://tidbcloud.com/), navigate to the **My TiDB** page, and then click the name of your TiDB Cloud Premium instance to go to its overview page. +2. On the overview page, locate the **TiDB version** information in the details pane of your TiDB Cloud Premium instance. -### Can I choose the kernel version for my TiDB Cloud Starter, Essential, Premium instance, or TiDB Cloud Dedicated cluster? +### Can I choose the kernel version for my TiDB Cloud Premium instance? No. TiDB Cloud manages the entire kernel lifecycle for all plans. diff --git a/tidb-cloud/releases/tidb-cloud-kernel-versioning_v2.md b/tidb-cloud/releases/tidb-cloud-kernel-versioning_v2.md deleted file mode 100644 index 88630e6662ac2..0000000000000 --- a/tidb-cloud/releases/tidb-cloud-kernel-versioning_v2.md +++ /dev/null @@ -1,52 +0,0 @@ ---- -title: Kernel Versioning for TiDB Cloud Premium -summary: Learn about the kernel versioning rules and format for TiDB Cloud Premium. ---- - -# Kernel Versioning for TiDB Cloud Premium - -This document describes the versioning rules for the underlying database kernel used by TiDB Cloud Premium. - -> **Note:** -> -> This document is applicable to TiDB Cloud Premium instances only. For TiDB Cloud Starter, Essential, and Dedicated, their kernel versions correspond directly to TiDB Self-Managed versions. To learn about features, improvements, and bug fixes included in a specific kernel version, refer to the corresponding [TiDB Self-Managed release notes](/releases/release-notes.md). - -## Kernel versioning - -TiDB Cloud Premium kernel versions use the following time-based format: - -```text -TiDB-X-CLOUD.YYYYMM.x -``` - -For example: - -```text -TiDB-X-CLOUD.202510.1 -``` - -Where: - -- `YYYYMM` represents the baseline code branch used to develop the kernel. For example, `202510` means that the baseline branch was created in October 2025. It does not indicate when the kernel version was released. -- `x` represents the patch release number for that baseline branch. - -For example, `TiDB-X-CLOUD.202510.1` indicates that the kernel is based on a branch created in October 2025 and is the first patch release built from that branch. - -Because kernel development and release schedules are independent, a kernel version might be released several months after its baseline branch is created. - -Because the kernel of TiDB Cloud Premium follows its own kernel release cadence and cycle, its release notes are published separately from the TiDB Self-Managed release notes. - -## FAQ - -### How do I check the kernel version of my TiDB Cloud Premium instance? - -1. In the [TiDB Cloud console](https://tidbcloud.com/), navigate to the **My TiDB** page, and then click the name of your TiDB Cloud Premium instance to go to its overview page. -2. On the overview page, locate the **TiDB version** information in the details pane of your TiDB Cloud Premium instance. - -### Can I choose the kernel version for my TiDB Cloud Premium instance? - -No. TiDB Cloud manages the entire kernel lifecycle for all plans. - -Although the kernel version is displayed for transparency, you cannot select a specific version when creating an instance or cluster. - -TiDB Cloud automatically provides validated kernel versions for new deployments and performs managed upgrades when appropriate. This helps ensure security, stability, compatibility, and access to the latest features and improvements without requiring manual maintenance. \ No newline at end of file From f28b5c8b396b449a687f22034cedbce17b5ce063 Mon Sep 17 00:00:00 2001 From: Grace Cai Date: Thu, 25 Jun 2026 15:15:38 +0800 Subject: [PATCH 03/14] Apply suggestions from code review Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com> --- tidb-cloud/releases/tidb-x-cloud.202510.1.md | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/tidb-cloud/releases/tidb-x-cloud.202510.1.md b/tidb-cloud/releases/tidb-x-cloud.202510.1.md index 7c8d527920aa4..89d0fa4ae63cd 100644 --- a/tidb-cloud/releases/tidb-x-cloud.202510.1.md +++ b/tidb-cloud/releases/tidb-x-cloud.202510.1.md @@ -9,12 +9,12 @@ Release date: April 28, 2026 TiDB X kernel version: `TiDB-X-CLOUD.202510.1` -{{{ .premium }}} is in public preview starting from April 28, 2026, using the` TiDB-X-CLOUD.202510.1` kernel. +{{{ .premium }}} is in public preview starting from April 28, 2026, using the `TiDB-X-CLOUD.202510.1` kernel. In `TiDB-X-CLOUD.202510.1`: - `202510` represents that the baseline code branch of this kernel version was created in October 2025, which is different from the release date. -- `1` represents that it is the first patch release for the TiDB-X-CLOUD.202510.0 kernel. +- `1` represents that it is the first patch release built from the `TiDB-X-CLOUD.202510` baseline branch. The `TiDB-X-CLOUD.202510.1` kernel is based on the TiDB v8.5.0 kernel, which means it supports most of the features and improvements as the [TiDB v8.5.0](/release-notes/release-8.5.0.md) kernel. @@ -53,7 +53,7 @@ In addition, compared with the [TiDB v8.5.0](/release-notes/release-8.5.0.md) ke - DDL statements that create new indexes: [`ADD INDEX`](/sql-statements/sql-statement-add-index.md) - DDL statements that reorganize existing indexes: [`MODIFY COLUMN`](/sql-statements/sql-statement-modify-column.md) and [`CHANGE COLUMN`](/sql-statements/sql-statement-change-column.md) - When this feature is enabled, TiDB automatically runs an `ANALYZE` (statistics collection) operation before the new or reorganized index becomes visible to users. This prevents inaccurate optimizer estimates and potential plan changes caused by temporarily unavailable statistics after index creation or reorganization. + When you enable this feature, TiDB automatically runs an `ANALYZE` (statistics collection) operation before the new or reorganized index becomes visible to users. This prevents inaccurate optimizer estimates and potential plan changes caused by temporarily unavailable statistics after index creation or reorganization. For more information, see [documentation](https://docs.pingcap.com/tidb/v8.5/ddl_embedded_analyze). @@ -77,9 +77,9 @@ In addition, compared with the [TiDB v8.5.0](/release-notes/release-8.5.0.md) ke For more information, see [Statement Summary Tables](/statement-summary-tables.md) and [Identify Slow Queries](/identify-slow-queries.md). -## Limitation +## Limitations -Because of the architecture difference between TiDB X and classic TiDB, the `TiDB-X-CLOUD.202510.1` kernel does not support the following storage features in TiDB v8.5.0 kernel: +Because of the architectural differences between TiDB X and classic TiDB, the `TiDB-X-CLOUD.202510.1` kernel does not support the following storage features of the TiDB v8.5.0 kernel: - [TiKV MVCC In-Memory Engine (IME)](/tikv-in-memory-engine.md) - [Follower Read](/follower-read.md) From bb33b659c85114035b446ec86d5e7e3202e5cfcb Mon Sep 17 00:00:00 2001 From: qiancai Date: Thu, 25 Jun 2026 15:20:06 +0800 Subject: [PATCH 04/14] Update _index.md --- tidb-cloud/releases/_index.md | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/tidb-cloud/releases/_index.md b/tidb-cloud/releases/_index.md index 60a3a38a48f39..a82f824ddaa80 100644 --- a/tidb-cloud/releases/_index.md +++ b/tidb-cloud/releases/_index.md @@ -11,7 +11,7 @@ TiDB Cloud offers two types of releases: **cloud platform releases** and **datab ## Cloud platform release notes -Cloud platform releases cover the TiDB Cloud console, APIs, and control plane, including new plan features, UI changes, integrations, and operational improvements that apply across all TiDB Cloud plans. +Cloud platform releases cover the TiDB Cloud console, APIs, and control plane, including new plan features, UI changes, integrations, and operational improvements across all TiDB Cloud plans. - [TiDB Cloud Release Notes](/tidb-cloud/releases/tidb-cloud-release-notes.md) @@ -19,12 +19,12 @@ Cloud platform releases cover the TiDB Cloud console, APIs, and control plane, i The database kernel is the core engine that processes your SQL queries and manages your data. Depending on your TiDB Cloud plan, your resources run on different kernels, each with its own release cadence and release notes. -| Plan | Kernel | Release notes | -|------|--------|---------------| -| TiDB Cloud Starter, Essential, and Premium | TiDB X kernel (`TiDB-X-CLOUD.YYYYMM.x`) | TiDB X kernel release notes (see the navigation pane on the left) | -| TiDB Cloud Dedicated | Standard TiDB kernel (`vX.Y.Z`) | [TiDB Self-Managed release notes](/releases/release-notes.md) | +| Plan | Kernel release notes | +|------|----------------------| +| TiDB Cloud Starter, Essential, and Dedicated | [TiDB Self-Managed release notes](/releases/release-notes.md) | +| TiDB Cloud Premium | TiDB X kernel release notes (see the navigation pane on the left) | -For more information about the versioning schemes of these kernels, see [TiDB Cloud Kernel Versioning](/tidb-cloud/releases/tidb-cloud-kernel-versioning.md). +For more information about the kernel versioning scheme for TiDB Cloud Premium, see [Kernel Versioning for TiDB Cloud Premium](/tidb-cloud/releases/tidb-cloud-kernel-versioning.md). ## Maintenance notifications From 901fdfc75c4b3c64fe36a06bd36847ec35c04fd0 Mon Sep 17 00:00:00 2001 From: qiancai Date: Thu, 25 Jun 2026 15:21:26 +0800 Subject: [PATCH 05/14] Update _index.md --- tidb-cloud/releases/_index.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tidb-cloud/releases/_index.md b/tidb-cloud/releases/_index.md index a82f824ddaa80..34bc23bad7a00 100644 --- a/tidb-cloud/releases/_index.md +++ b/tidb-cloud/releases/_index.md @@ -7,7 +7,7 @@ summary: Learn about TiDB Cloud release notes, kernel versioning, and maintenanc [TiDB Cloud](https://www.pingcap.com/tidb/cloud/) is a fully managed Database-as-a-Service (DBaaS) that brings [TiDB](https://docs.pingcap.com/tidb/stable/overview), an open-source Hybrid Transactional and Analytical Processing (HTAP) database, to your cloud. -TiDB Cloud offers two types of releases: **cloud platform releases** and **database kernel releases**. They follow independent release cycles and are documented separately. +TiDB Cloud offers two types of releases: [cloud platform releases](#cloud-platform-release-notes) and [database kernel releases](#database-kernel-release-notes). They follow independent release cycles and are documented separately. ## Cloud platform release notes From caa0f3d00ddca86720c753dff8ba66f942898947 Mon Sep 17 00:00:00 2001 From: qiancai Date: Thu, 25 Jun 2026 15:35:34 +0800 Subject: [PATCH 06/14] update the descriptions --- TOC-tidb-cloud-releases.md | 2 +- tidb-cloud/releases/tidb-cloud-kernel-versioning.md | 12 ++++++------ tidb-cloud/releases/tidb-x-cloud.202510.1.md | 12 ++++++------ 3 files changed, 13 insertions(+), 13 deletions(-) diff --git a/TOC-tidb-cloud-releases.md b/TOC-tidb-cloud-releases.md index 7f5b422ab1d4e..4688ec470d74d 100644 --- a/TOC-tidb-cloud-releases.md +++ b/TOC-tidb-cloud-releases.md @@ -20,7 +20,7 @@ ## TiDB X KERNEL RELEASE NOTES -- [TiDB X Kernel Versioning](/tidb-cloud/releases/tidb-cloud-kernel-versioning.md) +- [Kernel Versioning for TiDB Cloud Premium](/tidb-cloud/releases/tidb-cloud-kernel-versioning.md) - [TiDB-X-CLOUD.202510.1 Release Notes](/tidb-cloud/releases/tidb-x-cloud.202510.1.md) ## MAINTENANCE NOTIFICATIONS diff --git a/tidb-cloud/releases/tidb-cloud-kernel-versioning.md b/tidb-cloud/releases/tidb-cloud-kernel-versioning.md index 88630e6662ac2..1f98dd80a4605 100644 --- a/tidb-cloud/releases/tidb-cloud-kernel-versioning.md +++ b/tidb-cloud/releases/tidb-cloud-kernel-versioning.md @@ -9,7 +9,7 @@ This document describes the versioning rules for the underlying database kernel > **Note:** > -> This document is applicable to TiDB Cloud Premium instances only. For TiDB Cloud Starter, Essential, and Dedicated, their kernel versions correspond directly to TiDB Self-Managed versions. To learn about features, improvements, and bug fixes included in a specific kernel version, refer to the corresponding [TiDB Self-Managed release notes](/releases/release-notes.md). +> This document is applicable to TiDB Cloud Premium only. For TiDB Cloud Starter, Essential, and Dedicated, their kernel versions correspond directly to TiDB Self-Managed versions. To learn about features, improvements, and bug fixes included in a specific kernel version, refer to the corresponding [TiDB Self-Managed release notes](/releases/release-notes.md). ## Kernel versioning @@ -27,14 +27,14 @@ TiDB-X-CLOUD.202510.1 Where: -- `YYYYMM` represents the baseline code branch used to develop the kernel. For example, `202510` means that the baseline branch was created in October 2025. It does not indicate when the kernel version was released. -- `x` represents the patch release number for that baseline branch. +- `YYYYMM` indicates the baseline code branch used to develop the kernel. For example, `202510` means that the baseline branch was created in October 2025. It does not indicate when the kernel version was released. +- `x` indicates the patch release number for that baseline branch. For example, `TiDB-X-CLOUD.202510.1` indicates that the kernel is based on a branch created in October 2025 and is the first patch release built from that branch. Because kernel development and release schedules are independent, a kernel version might be released several months after its baseline branch is created. -Because the kernel of TiDB Cloud Premium follows its own kernel release cadence and cycle, its release notes are published separately from the TiDB Self-Managed release notes. +Because TiDB Cloud Premium follows its own kernel release cadence, its release notes are published separately from the TiDB Self-Managed release notes. ## FAQ @@ -45,8 +45,8 @@ Because the kernel of TiDB Cloud Premium follows its own kernel release cadence ### Can I choose the kernel version for my TiDB Cloud Premium instance? -No. TiDB Cloud manages the entire kernel lifecycle for all plans. +No. TiDB Cloud manages the entire kernel lifecycle for TiDB Cloud Premium. -Although the kernel version is displayed for transparency, you cannot select a specific version when creating an instance or cluster. +Although the kernel version is displayed for transparency, you cannot select a specific version when creating a TiDB Cloud Premium instance. TiDB Cloud automatically provides validated kernel versions for new deployments and performs managed upgrades when appropriate. This helps ensure security, stability, compatibility, and access to the latest features and improvements without requiring manual maintenance. \ No newline at end of file diff --git a/tidb-cloud/releases/tidb-x-cloud.202510.1.md b/tidb-cloud/releases/tidb-x-cloud.202510.1.md index 89d0fa4ae63cd..4bd4e47e4af14 100644 --- a/tidb-cloud/releases/tidb-x-cloud.202510.1.md +++ b/tidb-cloud/releases/tidb-x-cloud.202510.1.md @@ -13,10 +13,10 @@ TiDB X kernel version: `TiDB-X-CLOUD.202510.1` In `TiDB-X-CLOUD.202510.1`: -- `202510` represents that the baseline code branch of this kernel version was created in October 2025, which is different from the release date. -- `1` represents that it is the first patch release built from the `TiDB-X-CLOUD.202510` baseline branch. +- `202510` indicates that the baseline code branch of this kernel version was created in October 2025, which is different from the release date. +- `1` indicates that it is the first patch release built from the `TiDB-X-CLOUD.202510` baseline branch. -The `TiDB-X-CLOUD.202510.1` kernel is based on the TiDB v8.5.0 kernel, which means it supports most of the features and improvements as the [TiDB v8.5.0](/release-notes/release-8.5.0.md) kernel. +The `TiDB-X-CLOUD.202510.1` kernel is based on the TiDB v8.5.0 kernel, which means it supports most of the features and improvements of the [TiDB v8.5.0](/release-notes/release-8.5.0.md) kernel. In addition, compared with the [TiDB v8.5.0](/release-notes/release-8.5.0.md) kernel, the `TiDB-X-CLOUD.202510.1` kernel introduces the following features: @@ -26,10 +26,10 @@ In addition, compared with the [TiDB v8.5.0](/release-notes/release-8.5.0.md) ke This architecture enables elastic scalability, predictable performance, and optimized total cost of ownership (TCO) for AI-era workloads. - TiDB X represents a fundamental evolution from [classic TiDB](/tidb-architecture.md)'s shared-nothing architecture to a cloud-native shared-storage architecture. By transitioning from a shared-nothing to a shared-storage architecture, TiDB X addresses the physical limitations of coupled nodes to achieve the following technical objectives: + TiDB X represents a fundamental evolution from the shared-nothing architecture of [classic TiDB](/tidb-architecture.md) to a cloud-native shared-storage architecture. By transitioning from a shared-nothing to a shared-storage architecture, TiDB X addresses the physical limitations of coupled nodes to achieve the following technical objectives: - **Accelerated scaling**: Improving scaling performance by up to 10x by eliminating the need for physical data migration. - - **Task isolation**: Ensuring zero-interference between background maintenance tasks (such as compaction) and online transactional traffic. + - **Task isolation**: Ensuring zero interference between background maintenance tasks (such as compaction) and online transactional traffic. - **Resource elasticity**: Implementing a true "pay-as-you-go" model where compute resources scale independently of storage volume. For more information, see [TiDB X Architecture](/tidb-cloud/tidb-x-architecture.md). @@ -57,7 +57,7 @@ In addition, compared with the [TiDB v8.5.0](/release-notes/release-8.5.0.md) ke For more information, see [documentation](https://docs.pingcap.com/tidb/v8.5/ddl_embedded_analyze). -### Observability features +## Observability features * Add storage engine identifiers to statement summary tables and slow query logs [#61736](https://github.com/pingcap/tidb/issues/61736) @[henrybw](https://github.com/henrybw) From cb482a50f324f50d01ccecf33b37611ac2af7614 Mon Sep 17 00:00:00 2001 From: qiancai Date: Thu, 25 Jun 2026 15:36:53 +0800 Subject: [PATCH 07/14] Update TOC-tidb-cloud-releases.md --- TOC-tidb-cloud-releases.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/TOC-tidb-cloud-releases.md b/TOC-tidb-cloud-releases.md index 4688ec470d74d..21d36c5b32070 100644 --- a/TOC-tidb-cloud-releases.md +++ b/TOC-tidb-cloud-releases.md @@ -7,7 +7,7 @@ - [TiDB Cloud Release Overview](/tidb-cloud/releases/_index.md) -## REGULAR CLOUD RELEASE NOTES +## CLOUD PLATFORM RELEASE NOTES - [2026](/tidb-cloud/releases/tidb-cloud-release-notes.md) - [2025](/tidb-cloud/releases/release-notes-2025.md) From ad0884a5cb5259097a7ed780cea0929e3979f178 Mon Sep 17 00:00:00 2001 From: Grace Cai Date: Thu, 25 Jun 2026 17:43:03 +0800 Subject: [PATCH 08/14] Update tidb-cloud/releases/tidb-x-cloud.202510.1.md --- tidb-cloud/releases/tidb-x-cloud.202510.1.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tidb-cloud/releases/tidb-x-cloud.202510.1.md b/tidb-cloud/releases/tidb-x-cloud.202510.1.md index 4bd4e47e4af14..bc82369c2df76 100644 --- a/tidb-cloud/releases/tidb-x-cloud.202510.1.md +++ b/tidb-cloud/releases/tidb-x-cloud.202510.1.md @@ -40,7 +40,7 @@ In addition, compared with the [TiDB v8.5.0](/release-notes/release-8.5.0.md) ke PD automatically schedules data to be distributed as evenly as possible across all TiKV nodes in a cluster. However, this automatic scheduling focuses on the cluster as a whole. In some cases, even if the cluster-wide data distribution is balanced, the data of a specific table might still be unevenly distributed across TiKV nodes. - Starting from v8.5.4, you can use the [`SHOW TABLE DISTRIBUTION`](https://docs.pingcap.com/tidb/v8.5/sql-statement-show-table-distribution/) statement to check how the data of a specific table is distributed across all TiKV nodes. If the data distribution is unbalanced, you can use the [`DISTRIBUTE TABLE`](https://docs.pingcap.com/tidb/v8.5/sql-statement-distribute-table) statement to redistribute the table's data (experimental) to improve load balancing. + Now you can use the [`SHOW TABLE DISTRIBUTION`](https://docs.pingcap.com/tidb/v8.5/sql-statement-show-table-distribution/) statement to check how the data of a specific table is distributed across all TiKV nodes. If the data distribution is unbalanced, you can use the [`DISTRIBUTE TABLE`](https://docs.pingcap.com/tidb/v8.5/sql-statement-distribute-table) statement to redistribute the table's data (experimental) to improve load balancing. Note that redistributing the data of a specific table is a one-time task with a timeout limit. If the distribution task is not completed before the timeout, it will automatically exit. From 8505e65ab6af05ec5845061d8f304dd6faaca5dd Mon Sep 17 00:00:00 2001 From: Grace Cai Date: Thu, 25 Jun 2026 17:46:08 +0800 Subject: [PATCH 09/14] Update tidb-cloud/releases/tidb-x-cloud.202510.1.md --- tidb-cloud/releases/tidb-x-cloud.202510.1.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tidb-cloud/releases/tidb-x-cloud.202510.1.md b/tidb-cloud/releases/tidb-x-cloud.202510.1.md index bc82369c2df76..64541b80016e5 100644 --- a/tidb-cloud/releases/tidb-x-cloud.202510.1.md +++ b/tidb-cloud/releases/tidb-x-cloud.202510.1.md @@ -79,7 +79,7 @@ In addition, compared with the [TiDB v8.5.0](/release-notes/release-8.5.0.md) ke ## Limitations -Because of the architectural differences between TiDB X and classic TiDB, the `TiDB-X-CLOUD.202510.1` kernel does not support the following storage features of the TiDB v8.5.0 kernel: +Because of the architectural differences between TiDB X and classic TiDB, the TiDB X kernel does not support the following storage features of the classic TiDB kernel: - [TiKV MVCC In-Memory Engine (IME)](/tikv-in-memory-engine.md) - [Follower Read](/follower-read.md) From e35275f704c82b7a23a6e8351b128a70c46b4238 Mon Sep 17 00:00:00 2001 From: Grace Cai Date: Thu, 25 Jun 2026 18:21:12 +0800 Subject: [PATCH 10/14] Apply suggestions from code review --- tidb-cloud/releases/tidb-cloud-kernel-versioning.md | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tidb-cloud/releases/tidb-cloud-kernel-versioning.md b/tidb-cloud/releases/tidb-cloud-kernel-versioning.md index 1f98dd80a4605..e02878b0c2308 100644 --- a/tidb-cloud/releases/tidb-cloud-kernel-versioning.md +++ b/tidb-cloud/releases/tidb-cloud-kernel-versioning.md @@ -9,7 +9,9 @@ This document describes the versioning rules for the underlying database kernel > **Note:** > -> This document is applicable to TiDB Cloud Premium only. For TiDB Cloud Starter, Essential, and Dedicated, their kernel versions correspond directly to TiDB Self-Managed versions. To learn about features, improvements, and bug fixes included in a specific kernel version, refer to the corresponding [TiDB Self-Managed release notes](/releases/release-notes.md). +> - This document applies only to TiDB Cloud Premium. +> - TiDB Cloud Starter and Essential instances run on a customized TiDB X engine based on the classic TiDB v8.5.3 kernel. This kernel differs slightly from the TiDB Cloud Premium kernel. +> - TiDB Cloud Dedicated clusters run on the classic TiDB kernel, and their kernel versions correspond directly to TiDB Self-Managed versions. ## Kernel versioning @@ -34,7 +36,7 @@ For example, `TiDB-X-CLOUD.202510.1` indicates that the kernel is based on a bra Because kernel development and release schedules are independent, a kernel version might be released several months after its baseline branch is created. -Because TiDB Cloud Premium follows its own kernel release cadence, its release notes are published separately from the TiDB Self-Managed release notes. +Because TiDB Cloud Premium follows its own kernel release cadence, TiDB Cloud Premium release notes are published separately from TiDB Self-Managed release notes. ## FAQ From d32e325b32fcff04bffe5ea8c9d4ec51b95b6ee9 Mon Sep 17 00:00:00 2001 From: qiancai Date: Thu, 25 Jun 2026 18:54:01 +0800 Subject: [PATCH 11/14] Update _index.md --- tidb-cloud/releases/_index.md | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/tidb-cloud/releases/_index.md b/tidb-cloud/releases/_index.md index 34bc23bad7a00..c0543a5672fe2 100644 --- a/tidb-cloud/releases/_index.md +++ b/tidb-cloud/releases/_index.md @@ -17,14 +17,13 @@ Cloud platform releases cover the TiDB Cloud console, APIs, and control plane, i ## Database kernel release notes -The database kernel is the core engine that processes your SQL queries and manages your data. Depending on your TiDB Cloud plan, your resources run on different kernels, each with its own release cadence and release notes. +The database kernel is the core engine that processes your SQL queries and manages your data. Depending on your TiDB Cloud plan, your resources run on different kernels, each with its own release cadence. -| Plan | Kernel release notes | -|------|----------------------| -| TiDB Cloud Starter, Essential, and Dedicated | [TiDB Self-Managed release notes](/releases/release-notes.md) | -| TiDB Cloud Premium | TiDB X kernel release notes (see the navigation pane on the left) | - -For more information about the kernel versioning scheme for TiDB Cloud Premium, see [Kernel Versioning for TiDB Cloud Premium](/tidb-cloud/releases/tidb-cloud-kernel-versioning.md). +| Plan | Kernel information and release notes | +| --- | --- | +| TiDB Cloud Starter and Essential instances | Run on a customized [TiDB X](/tidb-cloud/tidb-x-architecture.md) engine based on the classic [TiDB v8.5.3](/release-notes/release-8.5.3.md) kernel. | +| TiDB Cloud Premium instances | Run on the [`TiDB-X-CLOUD.202510.1`](/tidb-cloud/releases/tidb-x-cloud.202510.1.md) version of the [TiDB X](/tidb-cloud/tidb-x-architecture.md) kernel. | +| TiDB Cloud Dedicated clusters | Run on the classic TiDB kernel, and the kernel version corresponds directly to TiDB Self-Managed versions. Currently, the default TiDB version of newly created TiDB Cloud Dedicated clusters is [v8.5.6](/release-notes/release-8.5.6.md). | ## Maintenance notifications From f3e9829d7a62a67d2071940ba14ba6bd3e4b9c21 Mon Sep 17 00:00:00 2001 From: qiancai Date: Thu, 25 Jun 2026 19:15:25 +0800 Subject: [PATCH 12/14] Update tidb-x-cloud.202510.1.md --- tidb-cloud/releases/tidb-x-cloud.202510.1.md | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/tidb-cloud/releases/tidb-x-cloud.202510.1.md b/tidb-cloud/releases/tidb-x-cloud.202510.1.md index 64541b80016e5..7d681b25132f1 100644 --- a/tidb-cloud/releases/tidb-x-cloud.202510.1.md +++ b/tidb-cloud/releases/tidb-x-cloud.202510.1.md @@ -7,16 +7,18 @@ summary: Learn about the features for the TiDB-X-CLOUD.202510.1 kernel. Release date: April 28, 2026 +Applicable TiDB Cloud plan: {{{ .premium }}} + TiDB X kernel version: `TiDB-X-CLOUD.202510.1` -{{{ .premium }}} is in public preview starting from April 28, 2026, using the `TiDB-X-CLOUD.202510.1` kernel. +{{{ .premium }}} is available in public preview starting April 28, 2026, using the `TiDB-X-CLOUD.202510.1` kernel. In `TiDB-X-CLOUD.202510.1`: - `202510` indicates that the baseline code branch of this kernel version was created in October 2025, which is different from the release date. - `1` indicates that it is the first patch release built from the `TiDB-X-CLOUD.202510` baseline branch. -The `TiDB-X-CLOUD.202510.1` kernel is based on the TiDB v8.5.0 kernel, which means it supports most of the features and improvements of the [TiDB v8.5.0](/release-notes/release-8.5.0.md) kernel. +The `TiDB-X-CLOUD.202510.1` kernel is based on the [TiDB v8.5.0](/releases/release-8.5.0.md) kernel and includes most of the features and improvements introduced in TiDB v8.5.0. In addition, compared with the [TiDB v8.5.0](/release-notes/release-8.5.0.md) kernel, the `TiDB-X-CLOUD.202510.1` kernel introduces the following features: @@ -61,7 +63,7 @@ In addition, compared with the [TiDB v8.5.0](/release-notes/release-8.5.0.md) ke * Add storage engine identifiers to statement summary tables and slow query logs [#61736](https://github.com/pingcap/tidb/issues/61736) @[henrybw](https://github.com/henrybw) - When both TiKV and TiFlash are deployed in a cluster, users often need to filter SQL statements by storage engine during database diagnostics and performance optimization. For example, if TiFlash is under high load, users might need to identify SQL statements running on TiFlash to locate potential causes. To meet this need, starting from v8.5.5, TiDB adds storage engine identifier fields to statement summary tables and slow query logs. + When both TiKV and TiFlash are deployed in a cluster, users often need to filter SQL statements by storage engine during database diagnostics and performance optimization. For example, if TiFlash is under high load, users might need to identify SQL statements running on TiFlash to locate potential causes. To meet this need, TiDB now adds storage engine identifier fields to statement summary tables and slow query logs. New fields in [statement summary tables](/statement-summary-tables.md): From f1fb87252c082e0e937b63bf2e1d7f28704efb04 Mon Sep 17 00:00:00 2001 From: qiancai Date: Fri, 26 Jun 2026 17:50:38 +0800 Subject: [PATCH 13/14] Update tidb-x-cloud.202510.1.md --- tidb-cloud/releases/tidb-x-cloud.202510.1.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tidb-cloud/releases/tidb-x-cloud.202510.1.md b/tidb-cloud/releases/tidb-x-cloud.202510.1.md index 7d681b25132f1..aad70d10e8cbb 100644 --- a/tidb-cloud/releases/tidb-x-cloud.202510.1.md +++ b/tidb-cloud/releases/tidb-x-cloud.202510.1.md @@ -86,4 +86,4 @@ Because of the architectural differences between TiDB X and classic TiDB, the Ti - [TiKV MVCC In-Memory Engine (IME)](/tikv-in-memory-engine.md) - [Follower Read](/follower-read.md) -To learn more about the limitations, see [Limited SQL features on TiDB Cloud](/tidb-cloud/limited-sql-features.md). \ No newline at end of file +To learn more about the limitations, see [Limited SQL features on TiDB X Instances](/tidb-cloud/limited-sql-features-tidb-x.md). \ No newline at end of file From bc911036b7acd17663e8035b13f4c860838c804c Mon Sep 17 00:00:00 2001 From: qiancai Date: Wed, 1 Jul 2026 10:23:34 +0800 Subject: [PATCH 14/14] Update tidb-cloud-kernel-versioning.md --- tidb-cloud/releases/tidb-cloud-kernel-versioning.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tidb-cloud/releases/tidb-cloud-kernel-versioning.md b/tidb-cloud/releases/tidb-cloud-kernel-versioning.md index e02878b0c2308..079523c37e2c5 100644 --- a/tidb-cloud/releases/tidb-cloud-kernel-versioning.md +++ b/tidb-cloud/releases/tidb-cloud-kernel-versioning.md @@ -36,7 +36,7 @@ For example, `TiDB-X-CLOUD.202510.1` indicates that the kernel is based on a bra Because kernel development and release schedules are independent, a kernel version might be released several months after its baseline branch is created. -Because TiDB Cloud Premium follows its own kernel release cadence, TiDB Cloud Premium release notes are published separately from TiDB Self-Managed release notes. +Because TiDB Cloud Premium follows its own kernel release cadence, [TiDB Cloud Premium release notes](/tidb-cloud/releases/tidb-x-cloud.202510.1.md) are published separately from [TiDB Self-Managed release notes](https://docs.pingcap.com/releases/tidb-self-managed/). ## FAQ