armeria

Armeria enables building services with gRPC, Thrift, HTTP/1, HTTP/2, and WebSocket, allowing unified exposure from a single codebase, as highlighted in the key features.

Built on Netty by its creator, Armeria leverages non-blocking I/O for reactive services, ensuring optimal performance for high-throughput microservices, per the README's emphasis on reactive foundation.

It seamlessly integrates with Kotlin, Retrofit, Reactive Streams, Spring Boot, and Dropwizard, letting developers use preferred tools without lock-in, as noted in the technology integration feature.

Write services once and expose them via multiple protocols, simplifying development and maintenance, which is a core philosophy of building reactive microservices 'at your pace.'