Near-identical viewports from different collaborators (slightly
different pan/zoom because Yjs awareness doesn't enforce pixel-exact
alignment) previously produced byte-different Overpass queries and
therefore different server-side cache keys. Each client missed cache
and triggered its own upstream fetch.
buildQuery now quantizes the bbox to a 0.01° grid (~1 km), expanding
outward (south/west floor, north/east ceil) so the viewport is always
covered, and formats coords with 3 decimals for a stable string.
Trade-offs:
- Slightly larger query bbox: ≤ one grid cell (≈ 1 km) of padding on
each side. For a zoom-12 viewport (~11 km wide) that's <10% extra
data; bounded by the existing `[maxsize:1048576]` + `out 100` limits.
- Coordinates in the query are now 3-decimal strings regardless of the
caller's precision — existing buildQuery test updated to match.
Two new tests cover the cache-alignment property and the outward-
expansion invariant. Hit ratio impact will be visible on the Grafana
"Overpass Cache Hit Ratio" stat added in the prior PR.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds apps/planner/app/routes/api.overpass.ts — a same-origin, rate-limited
server-side proxy that forwards Overpass QL to the upstream endpoint
configured via OVERPASS_URL (default: overpass.private.coffee).
Motivation:
- private.coffee's best-practices require a meaningful User-Agent
identifying the project. Browsers cannot set User-Agent on fetch()
(forbidden header), so the request has to originate server-side.
- Collaborative sessions commonly have N clients pan/zoom the same map,
so the same bbox query arrives multiple times within seconds.
- Setting up the proxy now lets us swap OVERPASS_URL to a self-hosted
Overpass later without client changes.
What the proxy does:
- Sets User-Agent "trails.cool Planner (https://trails.cool; legal@trails.cool)"
- Enforces same-origin via the Origin header
- Rate-limits per client IP (120 req/min)
- In-memory LRU cache of upstream responses keyed on the form-encoded body
(TTL 10 min, max 200 entries)
- Coalesces concurrent misses for the same key so N simultaneous clients
in one session incur exactly one upstream call
Client change: apps/planner/app/lib/overpass.ts POSTs to /api/overpass
instead of iterating over public Overpass endpoints. Fallback list
removed; resilience is now the proxy's responsibility.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Switch the Planner's primary Overpass endpoint from
overpass.kumi.systems to overpass.private.coffee. private.coffee is a
privacy-focused public Overpass instance that doesn't log queries,
which fits the Planner's privacy-first principle better than the
previous default. Keep overpass-api.de as the silent fallback for
resilience while the self-host-overpass change is in flight.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
New renderer-agnostic package with zero dependencies:
- Tile configs (base layers, overlay layers)
- Color palettes (surface, highway, smoothness, tracktype, cycleway,
bikeroute, elevation, maxspeed) — 8 color maps + 3 color functions
- POI category definitions (9 categories with Overpass queries, icons,
colors, profile mappings)
- Z-index layering constants
- Snap distance constant
Updated 15 consuming files to import from @trails-cool/map-core.
Deleted poi-categories.ts and z-index.ts from the Planner (fully moved).
packages/map re-exports tile configs from map-core for backwards compat.
All 117 tests pass, no user-facing changes.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Try overpass.kumi.systems first, fall back to overpass-api.de
- Reduced max results from 200 to 100, added maxsize:1MB limit
- Shortened timeout from 15s to 10s, added qt (quiet) output mode
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
overpass.kumi.systems has higher rate limits than overpass-api.de.
This is the same endpoint brouter-web uses as its default.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Overpass API sometimes returns HTTP 200 with a plain-text error body
containing "rate_limited" instead of a proper 429 status. Now checks
response body for this pattern before attempting JSON parse.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
