perf: move expensive updates to background workers #63
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Replace synchronous, per-block metrics collection with dedicated background goroutines that refresh heavy metrics every 15 s. This removes costly ClickHouse queries from the hot path and reduces block-processing latency. - Remove updateBlockMetrics() from both structlog & structlog_agg - Add start/stopMetricsWorker() helpers and runMetricsWorker() loop - Keep only lightweight BlockHeight update in ProcessNextBlock - Introduce limiter cache in state.Manager to avoid repeated MAX() queries; refresh every 6 s via background goroutine - Update limiter query to use ORDER BY … LIMIT 1 for index usage - Add comprehensive tests for cache hit/miss, concurrent access, single-start guarantees and refresh behaviour
to avoid full table scan and improve performance
Savid
approved these changes
Jan 30, 2026
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Replace synchronous, per-block metrics collection with dedicated background goroutines that refresh heavy metrics every 15s. This removes ClickHouse queries from the hot path and reduces block-processing latency.