packages/brookjs-docs/docs/philosophy/01-actions-commands-vs-events.mdx
---
name: 'Actions: Commands vs Events'
route: /philosophy/actions-commands-vs-events/
menu: Philosophy
---
# Actions: Commands vs Events
- Events are "something happened"
- Context
- Commands are "do this thing"
- Everything is controlled in the Redux store
- All state + behavior described in pure functions
- Application logic exists in pure, testable store
- All delta-managed side effects are commands in, events out
- translate commands -> side effects
- emit events when things happen
- Replace deltas or view layer with zero disruption to rest of application