DoorDash's new Entity Cache runs on Envoy and Valkey, caching over 100 endpoints across 50 services at 1.5M requests/sec with 99.99999% availability.
Using Kafka-driven invalidation and the XFetch algorithm, it reduces cache stampedes and cuts P99 latency spikes by up to 80%.
Read the full story on InfoQ 👉 https://bit.ly/45jwGvi
DoorDash has developed Entity Cache, a transparent proxy caching platform built on Envoy and Valkey to reduce redundant service-to-service requests across its microservices architecture. Operating within DoorDash’s service mesh, the platform serves over 1.5M requests per second with 99.99999% availability through caching, event-driven invalidation, failure handling, and performance optimizations.
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