feat(metrics): report event-loop lag in process metrics payload (#292) - #306
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David-patrick-chuks-02 merged 2 commits intoSep 6, 2026
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…y-Protocol#292) - Add lightweight eventLoopLagMs sampler using high-resolution hrtime - Include eventLoopLagMs in ProcessMetrics payload - Extend metrics.test.ts to verify presence and bounds of eventLoopLagMs - Ensure sampler cleanup hook for graceful shutdown and tests
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Summary
Resolves #292 by adding event-loop lag estimation to the process metrics payload.
Changes
src/modules/metrics/event-loop-lag.tsusingprocess.hrtime.bigint().eventLoopLagMsonProcessMetricsreturned bymetricsService.getMetrics().tests/metrics.test.tsto asserteventLoopLagMsis present, finite, and non-negative.Acceptance Criteria Verified
GET /api/v1/metricsincludes finite non-negativeeventLoopLagMstests/metrics.test.tspasses successfully