Message Queue
Massive buffer holding 200 requests. Place after Firewall to smooth DDoS spikes,
or before Compute to prevent overload. Cheap insurance against traffic bursts.
Flow: Firewall → Queue → Load Balancer or Load Balancer →
Queue → Compute
Memory Cache
Caching layer with 35-65% hit rate. Cache hits complete instantly without
hitting DB/Storage. Upgrade tiers for higher hit rates. Great for reducing DB costs.
Flow: Compute → Cache → DB/Storage