From f8b88dcce2aecf6a0c89544a83694789a662b035 Mon Sep 17 00:00:00 2001
From: Feng Zhou <feng.zhou@ihandysoft.com>
Date: Tue, 22 Dec 2020 15:22:11 +0800
Subject: [PATCH 1/3] Add NewTransaction and AreKeysInSameSlot.

---
 cluster.go | 10 ++++++++++
 redis.go   | 14 ++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/cluster.go b/cluster.go
index a6ce5c5846..e536d0195e 100644
--- a/cluster.go
+++ b/cluster.go
@@ -1423,6 +1423,16 @@ func (c *ClusterClient) cmdsMoved(
 	return nil
 }
 
+// NewTransation returns a transaction, the related slot is determined by key.
+func (c *ClusterClient) NewTransation(ctx context.Context, key string) (*Tx, error) {
+	slot := hashtag.Slot(key)
+	node, err := c.slotMasterNode(ctx, slot)
+	if err != nil {
+		return nil, err
+	}
+	return node.Client.newTx(ctx), nil
+}
+
 func (c *ClusterClient) Watch(ctx context.Context, fn func(*Tx) error, keys ...string) error {
 	if len(keys) == 0 {
 		return fmt.Errorf("redis: Watch requires at least one key")
diff --git a/redis.go b/redis.go
index 712579d4ca..36065d355e 100644
--- a/redis.go
+++ b/redis.go
@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"github.com/go-redis/redis/v8/internal"
+	"github.com/go-redis/redis/v8/internal/hashtag"
 	"github.com/go-redis/redis/v8/internal/pool"
 	"github.com/go-redis/redis/v8/internal/proto"
 	"go.opentelemetry.io/otel/label"
@@ -790,3 +791,16 @@ func (c *Conn) TxPipeline() Pipeliner {
 	pipe.init()
 	return &pipe
 }
+
+func AreKeysInSameSlot(keys ...string) bool {
+	if len(keys) == 0 {
+		return true
+	}
+	slot := hashtag.Slot(keys[0])
+	for _, key := range keys[1:] {
+		if hashtag.Slot(key) != slot {
+			return false
+		}
+	}
+	return true
+}

From 264b1078ed0962e7fad94b2483e1b049c060cf95 Mon Sep 17 00:00:00 2001
From: Feng Zhou <feng.zhou@ihandysoft.com>
Date: Fri, 29 Jul 2022 10:15:15 +0800
Subject: [PATCH 2/3] Update cluster.go.

---
 cluster.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cluster.go b/cluster.go
index 948bfce5d3..5ec48c5863 100644
--- a/cluster.go
+++ b/cluster.go
@@ -1414,7 +1414,7 @@ func (c *ClusterClient) NewTransation(ctx context.Context, key string) (*Tx, err
 	if err != nil {
 		return nil, err
 	}
-	return node.Client.newTx(ctx), nil
+	return node.Client.newTx(), nil
 }
 
 func (c *ClusterClient) Watch(ctx context.Context, fn func(*Tx) error, keys ...string) error {

From 7c12c674bebbef725e77b838d39550d81b49fcd7 Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Mon, 5 Dec 2022 03:10:43 +0000
Subject: [PATCH 3/3] chore(deps): bump github.com/cespare/xxhash/v2 from 2.1.2
 to 2.2.0

Bumps [github.com/cespare/xxhash/v2](https://github.com/cespare/xxhash) from 2.1.2 to 2.2.0.
- [Release notes](https://github.com/cespare/xxhash/releases)
- [Commits](https://github.com/cespare/xxhash/compare/v2.1.2...v2.2.0)

---
updated-dependencies:
- dependency-name: github.com/cespare/xxhash/v2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
---
 go.mod | 2 +-
 go.sum | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/go.mod b/go.mod
index 927841e0d3..faa9023937 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/go-redis/redis/v9
 go 1.17
 
 require (
-	github.com/cespare/xxhash/v2 v2.1.2
+	github.com/cespare/xxhash/v2 v2.2.0
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f
 	github.com/onsi/ginkgo v1.16.5
 	github.com/onsi/gomega v1.20.0
diff --git a/go.sum b/go.sum
index 224bfa9034..e7213528b4 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
-github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
+github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=