Zhen Ye 446f06eb02 enhance: Implement rate limiting in WAL append operations (#47179) ... issue: #47178 This commit introduces a rate limiting mechanism for Write-Ahead Logging (WAL) operations to prevent overload during high traffic. Key changes include: - Added `RateLimitObserver` to monitor and control the rate of DML operations. - Add Adaptive RateLimitController to apply the strategy of rate limit. - WAL will slow down if the recovery-storage works on catchup mode or node memory is high. - Updated `WAL` and related components to handle rate limit states, including rejection and slowdown. - Introduced new error codes for rate limit rejection in the streaming error handling. - Enhanced tests to cover the new rate limiting functionality. These changes aim to improve the stability and performance of the streaming service under load. --------- Signed-off-by: chyezh <chyezh@outlook.com> Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>		2026-03-18 16:19:26 +08:00
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mock_walimpls	…
util	enhance: Implement rate limiting in WAL append operations (#47179)	2026-03-18 16:19:26 +08:00