Graham McIntire
9bf96349ad
Three small wins from a telemetry audit: 1. Propagation.scores_at/3 wrapped every call in Instrument.span, firing two handler dispatches that dominated the ~10µs ETS lookup on cache hits. The map's LiveView fires this on every pan + point-click, so hot-path latency was mostly telemetry. Span now wraps only the miss branch (where disk IO makes the duration signal meaningful); hit path still emits the cheap hit/miss counter the cache-ratio panel reads. 2. Oban queue-depth poller: 10s → 30s. Every replica independently GROUP-BYs oban_jobs, so each extra replica paid ~3 redundant queries per minute for a gauge that moves on the hour-scale anyway. 3. Dropped summary(phoenix.endpoint.start.system_time): summarizing a wall-clock timestamp produces no useful aggregate — stop.duration below it is the meaningful signal. |
||
|---|---|---|
| .. | ||
| components | ||
| controllers | ||
| live | ||
| plugs | ||
| endpoint.ex | ||
| gettext.ex | ||
| live_table_footer.ex | ||
| metrics_plug.ex | ||
| router.ex | ||
| skew_t.ex | ||
| telemetry.ex | ||
| user_auth.ex | ||