SEA: add support for Hybrid disposition

[varun-edachali-dbx]

What type of PR is this?

• Feature

Description

Following discussions surrounding the inefficiency of the existing EXTERNAL_LINKS disposition due to the repeated calls made to the control plane, we introduce support for the Hybrid disposition, which provides batches of links and prevents the need to query for every link.

In case of small results, we get the response in the attachment key in the arrow format, which further boosts the efficiency.

How is this tested?

• Unit tests
• E2E Tests
• Manually
• N/A

Related Tickets & Documents

Benchmarking of EXTERNAL_LINKS
Design Doc
PECOBLR-639

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[jayantsing-db]

Thanks. Some minor questions, rest LGTM

[github-actions]

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