The Simple Server setup managed by this tooling has the following components.
| Component | Purpose | Technologies |
|---|---|---|
| Primary relational database | Primary application database | PostgreSQL |
| Secondary relational database | Follower application database | PostgreSQL |
| Primary non-relational datastore | Datastore for application caching and background jobs | Redis |
| Secondary non-relational datastore | Follower for primary non-relational datastore | Redis |
| Web servers | Dashboard web application and APIs | Ruby on Rails Passenger |
| Background processing servers | Perform enqueued tasks asynchronously | Sidekiq |
| Load balancer | Route incoming web requests across web servers | HAProxy |
| System health monitoring | Monitor the system health of all Simple servers | Prometheus Grafana |
| Storage | Large storage location for logs and database backups | rsync |
These components are arranged in the following topography.
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