Files
ArchiTools/nginx/tile-cache.conf
T
AI Assistant 536b3659bb feat(geoportal): nginx tile cache + PMTiles overview layers + tippecanoe pipeline
- Add nginx reverse proxy cache in front of Martin (2GB, 1h TTL, stale serving, CORS)
- Martin no longer exposes host port — all traffic routed through tile-cache on :3010
- Add PMTiles support in map-viewer.tsx (conditional: NEXT_PUBLIC_PMTILES_URL env var)
  - When set: single PMTiles source for UAT + administrativ layers (z0-z14, ~5ms/tile)
  - When empty: fallback to Martin tile sources (existing behavior, zero breaking change)
- Add tippecanoe Docker service (profiles: tools) for on-demand PMTiles generation
- Add rebuild-overview-tiles.sh: ogr2ogr export → tippecanoe → MinIO atomic upload
- Install pmtiles npm package for MapLibre protocol registration

Performance impact:
- nginx cache: 10-100x faster on repeat tile requests, zero PostGIS load on cache hit
- PMTiles: sub-10ms overview tiles, zero PostGIS load for z0-z14

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-27 20:28:49 +02:00

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# nginx tile cache for Martin vector tile server
# Proxy-cache layer: 10-100x faster on repeat requests, zero PostGIS load for cached tiles
proxy_cache_path /var/cache/nginx/tiles
levels=1:2
keys_zone=tiles:64m
max_size=2g
inactive=24h
use_temp_path=off;
server {
listen 80;
server_name _;
# Health check
location = /health {
access_log off;
return 200 "ok\n";
add_header Content-Type text/plain;
}
# Martin catalog endpoint (no cache)
location = /catalog {
proxy_pass http://martin:3000/catalog;
proxy_set_header Host $host;
}
# Tile requests — cache aggressively
location / {
proxy_pass http://martin:3000;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
# Cache config
proxy_cache tiles;
proxy_cache_key "$request_uri";
proxy_cache_valid 200 1h;
proxy_cache_valid 204 1m;
proxy_cache_valid 404 1m;
proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504;
proxy_cache_lock on;
proxy_cache_lock_timeout 5s;
# Pass cache status header (useful for debugging)
add_header X-Cache-Status $upstream_cache_status always;
# CORS headers for tile requests
add_header Access-Control-Allow-Origin "*" always;
add_header Access-Control-Allow-Methods "GET, HEAD, OPTIONS" always;
add_header Access-Control-Allow-Headers "Range, If-None-Match, Accept-Encoding" always;
add_header Access-Control-Expose-Headers "Content-Range, Content-Length, ETag, X-Cache-Status" always;
# Handle preflight
if ($request_method = OPTIONS) {
add_header Access-Control-Allow-Origin "*";
add_header Access-Control-Allow-Methods "GET, HEAD, OPTIONS";
add_header Access-Control-Max-Age 86400;
add_header Content-Length 0;
return 204;
}
# Martin already compresses — pass through
proxy_set_header Accept-Encoding "";
gzip off;
# Timeouts (Martin can be slow on low-zoom tiles)
proxy_connect_timeout 10s;
proxy_read_timeout 120s;
proxy_send_timeout 30s;
}
}