Google Calendar: Detailed Component Design

Step 7: Detailed Component Design

We now trace each core feature through the part that handles it: the event lifecycle, invitations, room booking, availability, notifications, and time zones.

Event Lifecycle Management

An event moves through a lifecycle: created, updated, sometimes repeated, sometimes cancelled, with invitations and responses running alongside it. Here is how the system handles each stage.

Creating an event. When a user schedules a meeting, the Event Service runs four steps.

1. **Validate and check for conflicts