Single-node · In-memory · gRPC

Heads up: I ended up switching to NATS + PostgreSQL. If you need consumer groups, bare NATS won't help — you need JetStream, which requires persistence. tinybroker fills the gap when you want in-memory consumer groups with no persistence overhead. The code works and is free to use; just know why you're reaching for it.

tinybroker exposes a standard gRPC interface. Any language with a gRPC implementation can connect. The proto files live in proto/tinybroker/v1/.

Generate client stubs with your language’s protoc plugin, or use Buf for a language-agnostic build pipeline.

Go

Connect to tinybroker from Go using grpc-go and generated protobuf stubs.

Python

Connect to tinybroker from Python using grpcio and generated protobuf stubs.

Node.js

Connect to tinybroker from Node.js using @grpc/grpc-js and proto-loader.

Java

Connect to tinybroker from Java using grpc-java and generated protobuf stubs.

Rust

Connect to tinybroker from Rust using tonic and prost-generated stubs.