For an upcoming project I want to use microservices on my Raspberry Pi. This means multiple process will take care of individual tasks. To coordinate these processes they need to communicate with each other. A great way to implement this is using a Redis server. Redis is an open source (BSD licensed), in-memory data structure store and can be used as a database, cache and message broker. Since version 4.0 Redis supports ARM processors and gets tested against the Raspberry Pi.
All microservices on the Raspberry will run as docker containers. Docker provides a method of packaging software to include not only your code, but also other components such as a full file system, system tools, services, and libraries. You can then run the software on multiple machines without a lot of setup. Each microservice is independent and it is very easy to manage or exchange certain services.
The short tutorial assumes you already have a Raspberry Pi setup with Raspbian.Read more