System Design AI

Guided practice

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

All designs 4

Ordered by design number

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

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48. Design a Ticket Booking System like Ticketmaster
Hold seats with one conditional write, pay by authorize and capture, and put ten million fans in a fair waiting room without selling a seat twice.
ClassicMedium
Search Concurrency Aurora
+5
AWS Booking OpenSearch Ticketing Waiting room
Worked design
Practice
56. Design a Local Business Review Site like Yelp
Search 10 million businesses by place, words and category, keep every average rating exact, and keep fake reviews out.
ClassicMedium
Databases Search AWS
+5
Change data capture Geospatial OpenSearch PostgreSQL Reviews
Worked design
Practice
58. Design a Dating App like Tinder
Stacks of nearby people in under 300 ms, 2 billion swipes a day, and a match never missed even when both like at once.
ClassicMedium
Caching Databases Search
+7
AWS Bloom filter Consistency DynamoDB Geospatial OpenSearch Redis
Worked design
Practice
99. Design a Cross-Product Tagging System
One set of tags across Jira issues, Confluence pages and Bitbucket pull requests: batch renders, tag pages that never leak, suggestions, popular tags.
ClassicMedium
Databases Search Security
+6
AWS Collaboration DynamoDB Many to many OpenSearch Permissions
Worked design
Practice

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