mirror of
https://github.com/Kpa-clawbot/meshcore-analyzer.git
synced 2026-08-21 17:39:48 +00:00
078225a54e
## TL;DR Post-merge regression introduced by #1627 r3 (commit `e2212f50`): `buildNodeInfoMap` in `cmd/server/neighbor_api.go` ran an uncached `SELECT … FROM nodes` scan on every call. Folded `first_seen` into the already-cached `getCachedNodesAndPM` (30s TTL) so the 4 hot handlers that call `buildNodeInfoMap` no longer pay for a full table scan per request. ## Before / After `buildNodeInfoMap` is called by **4 hot handlers**: - `cmd/server/neighbor_api.go:130` - `cmd/server/neighbor_api.go:297` - `cmd/server/neighbor_debug.go:83` - `cmd/server/node_reach.go:421` | | Before | After | |---|---|---| | `SELECT … FROM nodes` per call | 1 (uncached) | 0 (cache hit) | | `SELECT … FROM observers` per call | 1 (uncached) | 1 (unchanged) | | At Cascadia scale (~2600 nodes) | full scan × 4 handlers × N req/s | one scan / 30s | ## How - Extended the `getAllNodes` schema probe to also `COALESCE(first_seen, '')`. Falls back through the existing richest → leanest ladder if the column is missing. - `nodeInfo.FirstSeen` is therefore populated for every cached entry in `getCachedNodesAndPM`. - `buildNodeInfoMap` drops its second `SELECT` entirely and just copies `nodeInfo` values out of the cached map. - Public signature of `buildNodeInfoMap` is unchanged. `node_reach.go:421` still sees `nodeInfo.FirstSeen` populated, served from cache. `cmd/server/store.go` is touched because `getAllNodes` is the only sensible owner of the `first_seen` SELECT — adding a parallel cache would duplicate the 30s TTL machinery this fix is designed to leverage. ## Test (red → green) - Commit 1 (`test:`): `TestBuildNodeInfoMap_FirstSeenIsCached` — calls `buildNodeInfoMap`, mutates `first_seen` out-of-band via a separate rw connection, calls it again, and asserts both calls return the same (cached) value. Fails on `origin/master` (call 2 sees the mutated value, proving the uncached scan). - Commit 2 (`perf:`): the fold. Test now passes. ## Refs Post-merge audit identified this as the only MAJOR finding from #1627; recommendation was a follow-up hot-fix PR. This is that PR. --------- Co-authored-by: openclaw-bot <bot@openclaw> Co-authored-by: openclaw-bot <bot@openclaw.local>