Kpa-clawbot 790a713ba9 perf: combine 4 subpath API calls into single bulk endpoint (#587) ...

## Summary

Consolidates the 4 parallel `/api/analytics/subpaths` calls in the Route
Patterns tab into a single `/api/analytics/subpaths-bulk` endpoint,
eliminating 3 redundant server-side scans of the subpath index on cache
miss.

## Changes

### Backend (`cmd/server/routes.go`, `cmd/server/store.go`)
- New `GET
/api/analytics/subpaths-bulk?groups=2-2:50,3-3:30,4-4:20,5-8:15`
endpoint
- Groups format: `minLen-maxLen:limit` comma-separated
- `GetAnalyticsSubpathsBulk()` iterates `spIndex` once, bucketing
entries into per-group accumulators by hop length
- Hop name resolution is done once per raw hop and shared across groups
- Results are cached per-group for compatibility with existing
single-key cache lookups
- Region-filtered queries fall back to individual
`GetAnalyticsSubpaths()` calls (region filtering requires
per-transmission observer checks)

### Frontend (`public/analytics.js`)
- `renderSubpaths()` now makes 1 API call instead of 4
- Response shape: `{ results: [{ subpaths, totalPaths }, ...] }` —
destructured into the same `[d2, d3, d4, d5]` variables

### Tests (`cmd/server/routes_test.go`)
- `TestAnalyticsSubpathsBulk`: validates 3-group response shape, missing
params error, invalid format error

## Performance

- **Before:** 4 API calls → 4 scans of `spIndex` + 4× hop resolution on
cache miss
- **After:** 1 API call → 1 scan of `spIndex` + 1× hop resolution
(shared cache)
- Cache miss cost reduced by ~75% for this tab
- No change on cache hit (individual group caching still works)

Fixes #398

Co-authored-by: you <you@example.com>

2026-04-04 10:19:18 -07:00

..

ingestor

test: push ingestor coverage from 70% to 84% (#344) (#492)

2026-04-02 17:31:47 -07:00

server

perf: combine 4 subpath API calls into single bulk endpoint (#587)

2026-04-04 10:19:18 -07:00