mwitkow/grpc-proxy

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1048 stars · 226 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A Go library providing a transparent gRPC reverse proxy handler that routes gRPC calls to backends without knowledge of their service semantics. It supports declarative backend mapping via a director function and simple round-robin load balancing.

Use cases

• expose gRPC services over the internet through a reverse proxy
• route gRPC calls to different backends based on hostname or metadata
• load balance gRPC requests across multiple backend services
• block internal gRPC methods from external clients at a proxy layer
• proxy gRPC traffic without regenerating service stubs

When to choose

• you need a transparent gRPC reverse proxy in Go with minimal overhead
• you want routing decisions based on :authority or metadata without knowing request payloads
• you need to mix locally-served handlers with proxied unknown services in one gRPC server

When to avoid

• you need an HTTP/2 or general-purpose reverse proxy rather than gRPC-specific routing
• you need advanced features like retries, circuit breaking, or observability out of the box
• you want a maintained, feature-rich solution - the project is described as a proof of concept

Facets

library · maturity maintenance

proxy rpc routing middleware backend microservices networking apis go windows cross-platform grpc reverse-proxy load-balancing transparent-proxy linux macos

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