Concepts

Overview

• Adapter
  • An adapter can instantiate a client session for a given platform (e.g. web, Expo)
• Client
  • A logical group of client sessions
• Client session
  • Store
  • Reactivity graph
  • Coordinator
• SQLite database
  • In-memory SQLite database within the client session thread (usually main thread)
    • Used by the reactivity graph
  • Persisted SQLite database (usually running in a background thread/web worker)
  • Fully derived from the mutation eventlog
• Live queries
  • Db queries queryDb()
  • Computed queries computed()
• Mutation
  • Mutation definition
  • Mutation event
  • Mutation eventlog
• Devtools
• Sync backend
  • A central server that is responsible for syncing the mutation eventlog between clients

Architecture diagram

Assuming the web adapter in a multi-client, multi-tab browser application, a diagram looks like this:

The architecture is similar for other adapters (e.g. Expo) but often only involves a single client session per client.