obs(grafana): cache + RPC-reduction dashboard - #181
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Adds 8 panels covering every cache counter shipped in the recent pre-warm work: - bytecode cache hit ratio gauge (cumulative) - v2 reserves cache hit ratio gauge (cumulative) - RPC calls avoided in the last 5 minutes (headline win metric) - mempool refresher warm-pool gauge - bytecode hits vs RPC fetches per minute timeseries - v2 hits / stale / missing per minute timeseries - mempool pre-warm refresh latency p50/p95/p99 - mempool pre-warm inject hit / miss per minute Auto-loaded via the existing /var/lib/grafana/dashboards mount; the 30-second provisioning poll picks it up without a Grafana restart.
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Summary
New Grafana dashboard
Aether — RPC Reduction Caches(uidaether-cache) visualises every counter introduced by the pre-warm cache stack (#173 / #174 / #178 / #179). Without it the only way to read the cache wins wascurl /metrics | grep.Auto-loaded via the existing
/var/lib/grafana/dashboardsbind-mount; the 30-second provisioning poll picks it up without a Grafana restart.Panels (8)
hits / (hits + rpc_fetches)hits / (hits + stale + missing)increase(bytecode_hits[5m]) + increase(v2_hits[5m])aether_mempool_prewarm_warm_poolsgaugehistogram_quantileover_duration_ms_bucketmempool_prewarm_inject_total{result=...}Hit-ratio gauges are thresholded red < 50% < orange < 80% < green so a glance reveals when a cache is failing.
Files Changed
deploy/docker/grafana/dashboards/cache.jsonAcceptance Criteria
python3 -c 'json.load(...)').job=~"aether-rust|aether-host-rust"so both compose-internal and host-side runs render.default.ymlpicks the file up viafoldersFromFilesStructure: false.Test plan
Aether — RPC Reduction Cacheslisted and panels populate from live/metricsscrape.