NestJSFastify adapter thay Express: dùng FastifyAdapter từ @nestjs/platform-fastify, nhanh hơn 2-3x nhờ JSON serialization tối ưu và request/response lifecycle hiệu quả hơn. Nhưng một số middleware Express không tương thích, cần kiểm tra.
Caching: @nestjs/cache-manager với Redis store qua CacheModule.registerAsync(). @UseInterceptors(CacheInterceptor) tự động cache GET responses, @CacheTTL(seconds) override TTL cho route cụ thể. Programmatic cache với CacheManager.get/set/del.
Compression: app.use(compression()) giảm response size 60-70% cho text content.
Rate Limiting: @nestjs/throttler với ThrottlerModule.forRoot() config nhiều tiers (short/long). APP_GUARD với ThrottlerGuard apply global, @Throttle() override cho route cụ thể, @SkipThrottle() bỏ qua.
DB connection pooling: TypeORM extra.max tăng max connections theo CPU cores. Lazy loading modules với LazyModuleLoader cho microservices để giảm startup time.
Fastify adapter over Express: use FastifyAdapter from @nestjs/platform-fastify, 2-3x faster due to optimized JSON serialization and request/response lifecycle. However, some Express middleware is incompatible — check before switching.
Caching: @nestjs/cache-manager with Redis store via CacheModule.registerAsync(). @UseInterceptors(CacheInterceptor) automatically caches GET responses, @CacheTTL(seconds) overrides TTL for specific routes. Programmatic cache with CacheManager.get/set/del.
Compression: app.use(compression()) reduces response size by 60-70% for text content.
Rate Limiting: @nestjs/throttler with ThrottlerModule.forRoot() configuring multiple tiers (short/long). APP_GUARD with ThrottlerGuard applies globally, @Throttle() overrides per route, @SkipThrottle() bypasses it.
DB connection pooling: TypeORM extra.max increases max connections based on CPU cores. Lazy loading modules with LazyModuleLoader in microservices reduces startup time.