تحديد المعدّل الموزّع

في هذا الدرس

make limits correct across several instances.

الموضوعات المخطط لها

• An in-memory limiter behind a load balancer gives each instance its own counter: the real limit is multiplied by the instance count.
• Use a shared store (commonly Redis with an atomic script) or enforce at a single edge such as the gateway.
• Atomicity matters: read-modify-write races let extra requests through.
• Accept approximation: local buckets that sync periodically trade accuracy for speed.
• Decide failure behavior when the store is down: fail open (allow) or closed (reject), per endpoint risk.