feat: Redis-backed sliding window throttling with @Throttle decorator#882
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- Add src/common/throttler/ module: - throttle.decorator.ts: @Throttle(limit, ttl) and @SkipThrottle() - throttler.service.ts: sliding window via Redis ZADD/ZCARD/ZREMRANGEBYSCORE - throttler.guard.ts: IP-based (unauthenticated) + userId-based (authenticated) tracking, trusted IP whitelist (THROTTLE_TRUSTED_IPS env), Retry-After header - throttler.module.ts: exports ThrottlerService + ThrottlerGuard - Register ThrottlerGuard globally via APP_GUARD in AppModule - Auth endpoints: @Throttle(5,60) nonce, @Throttle(10,60) login, @Throttle(20,60) refresh - Global defaults: 100 req/min authenticated, 20 req/min unauthenticated - Remove old inline enforceRateLimit from AuthController - Also includes normalizeWalletAddress utility (wallet.utils.ts) and pre-existing merge conflict fixes from feat/normalize-wallet-address Tests: 12/12 throttler, 3/3 auth controller (15 total)
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closes #696
Summary
Implements Redis-backed rate limiting with a custom
@Throttle()decorator andThrottlerGuardthat uses a sliding window algorithm.New files:
src/common/throttler/throttle.decorator.ts@Throttle(limit, ttl)and@SkipThrottle()decoratorsthrottler.service.tsZADD/ZCARD/ZREMRANGEBYSCOREthrottler.guard.tsCanActivateguard — IP tracking (unauth) / userId tracking (auth)throttler.module.tsthrottler.spec.tsAcceptance criteria
@Throttle(10, 60)= 10 req/60sTHROTTLE_TRUSTED_IPSenv var (comma-separated)Auth endpoint limits
GET /auth/nonce/:walletAddress→@Throttle(5, 60)POST /auth/login→@Throttle(10, 60)POST /auth/refresh→@Throttle(20, 60)Configuration
Tests
15/15 pass (12 throttler + 3 auth controller)