System Design AI

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All designs 3

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4. Design a Notification System
Deliver email, push and SMS with preferences, retries and honest delivery status.
ClassicMedium
Queues Streaming Distributed systems
+10
AWS Delivery semantics Fan out Kafka Notifications Real time Reliability Retries Amazon SQS User preferences
Worked design
Practice
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
44. Design a Price Tracking Service
Watch prices on 500 million products with a polite crawler and a million browsers, verify what you are told, and notify subscribers within minutes of a drop.
ClassicMedium
Databases Streaming Distributed systems
+6
AWS Crawling Crowdsourcing DynamoDB Kafka Notifications
Worked design
Practice

Each design brings together the brief, practice, examples and discussion.