rosemariejebbjtxbfp
a75318b811
Stage-0 caching from docs/scalability.md. The Go API now caches hot product-detail and search-result reads in Redis with a fail-open, epoch-versioned scheme; Python ingestion bumps the epoch after a write run to invalidate the cache globally in O(1). - api/internal/cache: fail-open Cache (GetJSON/SetJSON) namespaced by an epoch counter (og:cache:epoch); disabled when Redis is unconfigured. - store: ProductByID/ProductByGTIN (24h TTL) and SearchProducts (1h TTL) read-through the cache via WithCache. - ingestion: bump_cache_epoch() called after update_off/seed_off/ import_bypos/dedup commits when rows changed; best-effort, never fails a run. Adds redis dependency. Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
60 lines
1.7 KiB
Go
60 lines
1.7 KiB
Go
// Command server starts the OpenGoods public read-only API.
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package main
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import (
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"context"
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"log"
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"net/http"
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"time"
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"github.com/jackc/pgx/v5/pgxpool"
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"github.com/baicai2026-baicai/goods/api/internal/cache"
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"github.com/baicai2026-baicai/goods/api/internal/config"
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"github.com/baicai2026-baicai/goods/api/internal/handler"
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"github.com/baicai2026-baicai/goods/api/internal/publicweb"
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"github.com/baicai2026-baicai/goods/api/internal/ratelimit"
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"github.com/baicai2026-baicai/goods/api/internal/store"
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)
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func main() {
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cfg := config.Load()
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ctx := context.Background()
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pool, err := pgxpool.New(ctx, cfg.DatabaseURL)
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if err != nil {
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log.Fatalf("failed to create db pool: %v", err)
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}
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defer pool.Close()
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pingCtx, cancel := context.WithTimeout(ctx, 5*time.Second)
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defer cancel()
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if err := pool.Ping(pingCtx); err != nil {
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log.Printf("warning: database not reachable at startup: %v", err)
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}
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limiter := ratelimit.New(cfg.RedisURL)
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if !limiter.Enabled() {
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log.Print("warning: Redis not configured; public API rate limiting disabled")
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}
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readCache := cache.New(cfg.RedisURL)
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if !readCache.Enabled() {
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log.Print("warning: Redis not configured; public API read cache disabled")
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}
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h := handler.New(store.New(pool).WithCache(readCache), publicweb.Dist()).
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WithRateLimit(limiter, cfg.AnonRateLimitPerMin).
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WithQuotas(cfg.AnonTotalQuota, cfg.RegisteredRateLimitPerMin, cfg.RegisteredQuotaTotal)
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srv := &http.Server{
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Addr: cfg.Addr,
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Handler: h.Router(),
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ReadHeaderTimeout: 10 * time.Second,
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}
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log.Printf("OpenGoods API listening on %s", cfg.Addr)
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if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
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log.Fatalf("server error: %v", err)
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}
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}
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