[PR #5227] [management] Add gRPC update debouncing mechanism #22446

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saavagebueno · 2026-08-05T06:05:58-04:00

saavagebueno commented

2026-08-05 06:05:58 -04:00

Original Pull Request: https://github.com/netbirdio/netbird/pull/5227

State: closed
Merged: No

Implements backpressure handling for peer network map updates to efficiently handle rapid changes. The first update is sent immediately; subsequent rapid updates are coalesced, ensuring that only the latest update is sent after a 1-second quiet period.

Intermediate changes do not need to be applied, so the focus is on processing only the final update in the queue.
This also fixes lost network updates on the producer side. The network map producer should not depend on network-related layers. Todo: set the channal size to 1 and set it to blocker.

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Summary by CodeRabbit

Infrastructure
- Introduced a per-peer update debouncing mechanism to reduce redundant transmissions, improve backpressure and coalesce rapid updates for streaming syncs.
Tests
- Added comprehensive test coverage verifying immediate send behavior, coalescing of rapid updates, timer-driven flushes, cleanup, and various edge cases.

**Original Pull Request:** https://github.com/netbirdio/netbird/pull/5227 **State:** closed **Merged:** No --- Implements backpressure handling for peer network map updates to efficiently handle rapid changes. The first update is sent immediately; subsequent rapid updates are coalesced, ensuring that only the latest update is sent after a 1-second quiet period. Intermediate changes do not need to be applied, so the focus is on processing only the final update in the queue. This also fixes lost network updates on the producer side. The network map producer should not depend on network-related layers. Todo: set the channal size to 1 and set it to blocker. ## Describe your changes ## Issue ticket number and link ## Stack  ### Checklist - [ ] Is it a bug fix - [ ] Is a typo/documentation fix - [x] Is a feature enhancement - [ ] It is a refactor - [ ] Created tests that fail without the change (if possible) > By submitting this pull request, you confirm that you have read and agree to the terms of the [Contributor License Agreement](https://github.com/netbirdio/netbird/blob/main/CONTRIBUTOR_LICENSE_AGREEMENT.md). ## Documentation Select exactly one: - [ ] I added/updated documentation for this change - [x] Documentation is **not needed** for this change (explain why) ### Docs PR URL (required if "docs added" is checked) Paste the PR link from https://github.com/netbirdio/docs here: https://github.com/netbirdio/docs/pull/__  ## Summary by CodeRabbit * **Infrastructure** * Introduced a per-peer update debouncing mechanism to reduce redundant transmissions, improve backpressure and coalesce rapid updates for streaming syncs. * **Tests** * Added comprehensive test coverage verifying immediate send behavior, coalescing of rapid updates, timer-driven flushes, cleanup, and various edge cases.

saavagebueno added the pull-request label 2026-08-05 06:05:58 -04:00

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claude/agent-network-test-cases-p743vw

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Reference: DYNR/netbird#22446