rqlite is a lightweight, user-friendly, open-source, distributed relational database. It’s written in Go and uses SQLite as its storage engine. When it comes to distributed systems the CAP theorem is an essential concept. It states that it’s impossible for a distributed database to simultaneously provide Consistency, Availability, and Partition tolerance. The challenge is in the face of a network partition, a database can only be available or consistent, but not both. Let’s take a look at the CA...