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perf(middleware): 优化订阅模式认证中间件，5次串行调用降至2步同步+1步异步

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- 为 GetActiveSubscription 添加 ristretto L1 缓存 + singleflight 防击穿
- 合并 ValidateSubscription + CheckUsageLimits 为纯内存 ValidateAndCheckLimits
- 窗口维护操作（激活/重置）异步化，不再阻塞首字节
- 缓存返回浅拷贝，避免并发 data race 和缓存污染
- 所有管理操作（分配/续期/撤销/扩展/窗口重置）同步失效 L1 缓存
- 新增 SubscriptionCacheConfig 可配置 L1 缓存大小/TTL/抖动

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
yangjianbo
2026-02-07 14:43:12 +08:00
parent 782a54a8a1
commit 0e514ed80b
4 changed files with 241 additions and 56 deletions
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2
backend/cmd/server/wire_gen.go
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@@ -66,7 +66,7 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
promoService := service.NewPromoService(promoCodeRepository, userRepository, billingCacheService, client, apiKeyAuthCacheInvalidator)
authService := service.NewAuthService(userRepository, redeemCodeRepository, refreshTokenCache, configConfig, settingService, emailService, turnstileService, emailQueueService, promoService)
userService := service.NewUserService(userRepository, apiKeyAuthCacheInvalidator)
subscriptionService := service.NewSubscriptionService(groupRepository, userSubscriptionRepository, billingCacheService)
subscriptionService := service.NewSubscriptionService(groupRepository, userSubscriptionRepository, billingCacheService, configConfig)
redeemCache := repository.NewRedeemCache(redisClient)
redeemService := service.NewRedeemService(redeemCodeRepository, userRepository, subscriptionService, redeemCache, billingCacheService, client, apiKeyAuthCacheInvalidator)
secretEncryptor, err := repository.NewAESEncryptor(configConfig)