What Is Envoy and Why It Matters for Microservices Load Balancing

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Envoy is an open-source edge and service proxy designed for cloud-native microservices architectures, offering capabilities beyond traditional load balancers like NGINX. It operates at the application layer to handle load balancing, circuit breaking, observability, and security within a single lightweight solution. Unlike NGINX, Envoy uses dynamic service discovery and continuous health checks to intelligently route traffic and avoid failed instances in real time. It integrates with API management platforms like Apigee as a sidecar proxy, enforcing policies such as rate limiting and authentication before requests reach core infrastructure. Envoy also serves as the data plane in service mesh frameworks like Istio, making it a foundational skill for developers working in modern distributed systems.

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ProgrammingDEV Community ·

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