Local and global rate limiting using Envoy filters and Redis-backed rate limit service to protect services from overload.
Local and global rate limiting using Envoy filters and Redis-backed rate limit service to protect services from overload.
Istio supports two rate limiting approaches: local (per-proxy, fast, no external dependency — approximate across replicas) and global (shared state via Redis rate limit service — accurate, requires Redis). Use local for protection; global for billing/quota enforcement.
Key takeaways
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