- Fix type mismatch in search_cache.go: SearchWithCache now returns *yandex.Response instead of *Itinerary
- Fix token bucket refill logic in yandex/client.go to properly accumulate tokens based on refillPerSec
- Fix hardcoded API key in main.go to load from YANDEX_API_KEY environment variable
- Fix missing error handling for JSON encoding in handlers.go RouteGeoJSON function
- Fix incorrect redis.Nil handling in cache/store.go CacheAside.Exists method
- Fix incorrect error return type in station_status.go updateStationStatus to return newStatus instead of empty string
- Add metrics package tracking cache hit-rate, API quota, circuit breaker trips, search time
- Integrate metrics with cache layer, yandex client, and API handlers
- Add /metrics HTTP endpoint for Prometheus-compatible metrics exposure
- Write tests for metrics functionality across cache, yandex, and API handlers
- Update test files to support new metrics infrastructure
- Add RankingMode field to SearchOptions (fastest/fewest_transfers/cheapest)
- Update FindRoutesPareto to respect ranking mode when sorting
- Add ranking_mode query parameter to RouteSearch endpoint
- Add TestParetoFrontGeneration with subtests for all three modes
Co-Authored-By: Claude <noreply@anthropic.com>
- Add transfer depth limiting in BFS/Dijkstra (MaxTransfers field in SearchOptions)
- Track transfer count at each step; stop when depth > 5
- Synthetic edge fallback on expansion failure
- Add TestLazyExpansionDepthLimit and TestFindRouteMaxTransfers tests
Co-Authored-By: Claude <noreply@anthropic.com>
- Add TransferTime constants (AirportToCity, CityToStation, StationToStation)
- Update Edge struct with Synthetic field
- Enhance addSyntheticEdgesForNode to use constants and mark synthetic edges
- Update BuildGraphFromStations to set Synthetic field
- Mark synthetic edges in GeoJSON output as dashed lines
- Write TestSyntheticAirportCityEdges and TestRouteWithSyntheticAirportCityEdges tests
- Add Cost field to Edge and RouteLeg structs
- Propagate Cost in FindRoute itinerary creation
- Write TestRouteParetoRanking test verifying non-dominated route selection
- Add addSyntheticEdgesForNode function that connects nodes to city hubs
- Modify FindRoute to add synthetic edges as fallback when no route found
- Write TestFindRouteWithSyntheticFallback test
Co-Authored-By: Claude <noreply@anthropic.com>
- Create cmd/api/handlers.go with HTTP handlers for all MVP endpoints
- Implement GET /v1/cities?query= city autocomplete
- Implement GET /v1/cities/{id}/stations city stations including neighbors
- Implement POST /v1/routes/search route search with Pareto-optimal results
- Implement GET /v1/routes/{search_id}/{route_id}/geojson route geometry
- Implement GET /v1/stations/{id}/status station status endpoint
- Add handler tests with success and error cases
- All existing tests pass
