New rqlite HTTP client

rqlite is a lightweight, open-source distributed relational database implemented in Go, and which uses SQLite as its storage engine.

I’ve decided to code a new, high-quality HTTP client library for rqlite. My hope is that this library will be useful on its own or as a foundation for higher-level libraries. Once written I may then have GPT generate versions in other languages from the Go source.

How rqlite is tested

rqlite is a lightweight, open-source, distributed relational database written in Go, and built on SQLite and Raft. With its origins dating back to 2014, its design has always prioritized reliability, and quality. The robustness of rqlite is also a testament to its disciplined testing strategy: after more than 10 years of development and deployments, users have reported fewer than 10 instances of panics in production.

Testing a distributed system like rqlite is no small feat. It requires careful consideration of various layers: from individual components to the entire system in operation. Let’s explore how rqlite is tested, following its philosophy of maintaining quality without unnecessary complexity.

Continue reading “How rqlite is tested”

rqlite 8.34.0 to 8.36.0: New Features and Enhancements

rqlite is a lightweight, user-friendly, open-source, distributed relational database. It’s written in Go and uses SQLite as its storage engine. rqlite has received several important updates in recent weeks. These updates, spanning versions 8.34.0 through 8.36.0, introduce new features and make significant improvements to the database’s implementation and usability.

Continue reading “rqlite 8.34.0 to 8.36.0: New Features and Enhancements”

New Configuration Guide for rqlite

rqlite is a lightweight, user-friendly, open-source, distributed relational database. It’s written in Go and uses SQLite as its storage engine.

I’ve added a new Configuration Guide for rqlite, which has been regularly requested. rqlite has many options and although the defaults work for the vast majority of use cases, occasionally rqlite requires some operational tweaks.

Faster Reads, Same Guarantees: Linearizable Consistency in rqlite 8.32

rqlite is a lightweight, open-source, distributed relational database. It’s written in Go, built on the Raft consensus algorithm, and uses SQLite as its storage engine. With release 8.32, rqlite now supports fast, reliable, Linearizable reads—delivering strong consistency guarantees without the performance costs of the past.

Distributed systems present many challenges, but there is only one really hard problem: ensuring a consistent state across nodes, even in the face of network partitions, machine failures, or unexpected bugs. And a closely related requirement is ensuring up-to-date data reads — both requirements are the essential challenges that every distributed database must address.

Continue reading “Faster Reads, Same Guarantees: Linearizable Consistency in rqlite 8.32”

Concurrency Control in Go: Inside rqlite’s Custom Synchronization Primitives

rqlite is a lightweight, open-source, distributed relational database written in Go, which uses SQLite as its storage engine.

Concurrency and synchronization are at the heart of any database — and distributed systems too. Today, I’d like to share the set of synchronization primitives and race-free data structures I’ve developed for rqlite, and explain how I use them to program key aspects of the database. They might even be useful to others confronted with similar requirements.

Continue reading “Concurrency Control in Go: Inside rqlite’s Custom Synchronization Primitives”