System Design AI

Guided practice

Start with a template. Work through each step. Ask Coach when you need a second opinion.

Designs with worked examples 1

Ordered by design number

Company tags are community-reported. Counts on cards show how many people reported that design.

CalendarClear filters

39. Design a Calendar System
Google Calendar-style events with recurrence, RSVPs and on-time reminders, using CDC for change notifications and a delay queue for reminders.
ClassicMedium
Caching Queues Databases
+5
Calendar Change data capture Notifications PostgreSQL Scheduling
Worked design
Practice

Self-paced by default. Your answers and canvas stay private. AI feedback runs only when you ask for it.