Mastodon

Aside from the various external dependencies, Mastodon has three main applications:

Mastodon API/UI
Streaming API
Sidekiq

Web Tier

What users perceive as "Mastodon" is a Ruby on Rails application with a React front end, served by Puma. This provides the Mastodon API, web user interface, as well as ActivityPub federation.

Our web tier runs on the DigitalOcean managed Kubernetes platform.

The Streaming API is a separate Node.js application which provides a background WebSockets connection between your browser session and the Mastodon server to provide real-time "streaming" updates as new posts are loaded to your timeline.

InfrastructureE-mail

InfrastructureMonitoring