What is Hemera?

In a nutshell

It's a RPC Framework for Node.js
It's chooses simplicity and reliability over guaranteed delivery
It's pattern driven by defining your RPC's as JSON objects
It's very lightweight
It's extendible via plugins (extensions, middlewares)
It's horizontal scalable and fault tolerant
It's very well tested
It's built with mature packages e.g for the plugin system Avvio, logging Pino or Pattern matching Bloomrun
It uses NATS as transport system
It is 100% compatible with yarn, npm and pnpm
We support Callback, Promise and Async/Await style
We offer Docker support
Hemera means in Greek mythology the personification of day so it must run on daily basis ;)

What's NATS

NATS is an open source, lightweight, high-performance cloud native infrastructure messaging system. It implements a highly scalable and elegant publish-subscribe (pub/sub) distribution model. The performant nature of NATS make it an ideal base for building modern, reliable, scalable cloud native distributed systems.

What is your motivation?

We want to create a toolkit which is responsible for everything expect the transport. We don't need overall transport independence. We trust in a well tested system. The wrong path in error-handling, logging and tracing are one of the reasons why we couldn't use existing solutions.

Are you the only one who use NATS for microservice architectures?

Definitely not! See here to get an impression.