Database Scaling System Design Questions

Design a URL shortener like TinyURL or Bitly.

CachingLoad Balancing & Scaling

Design a distributed unique ID generation service like Twitter Snowflake.

Consistency & Trade-offs

Design a Pastebin-style text snippet sharing service.

CachingLoad Balancing & Scaling

Design a social news feed like Instagram's or Facebook's home feed.

CachingQueues & Async Processing

Design a real-time chat and messaging service like WhatsApp or Messenger.

Consistency & Trade-offsQueues & Async Processing

Design the video playback and delivery system for a streaming service like Netflix or YouTube.

CachingLoad Balancing & Scaling

Design a file sync and storage service like Dropbox or Google Drive.

Consistency & Trade-offsQueues & Async Processing

Design a maps routing and ETA service like Google Maps.

CachingLoad Balancing & Scaling

Design an event ticketing system like Ticketmaster.

Consistency & Trade-offsQueues & Async Processing

Design a payment processing system like Stripe.

Consistency & Trade-offsQueues & Async Processing

Design a search autocomplete (typeahead) service.

CachingLoad Balancing & Scaling

Design a large-scale distributed web crawler.

CachingQueues & Async Processing

Design a real-time ad click aggregation system.

Consistency & Trade-offsQueues & Async Processing

Design a personalized recommendation system like Netflix's.

CachingQueues & Async Processing

Design a stored-value digital wallet like Apple Cash or Paytm.

Consistency & Trade-offs

Design a double-entry ledger service for a fintech like Ramp or Wise.

Consistency & Trade-offsQueues & Async Processing

Design a peer-to-peer money transfer app like Venmo or Cash App.

Consistency & Trade-offsQueues & Async Processing

Design a package tracking system like FedEx, UPS, or Amazon's track package feature.

CachingQueues & Async Processing

Design a hotel room booking system like Booking.com or Expedia.

CachingConsistency & Trade-offs

Design the like counting system for a social app like Instagram or YouTube.

CachingConsistency & Trade-offs

Design the follow graph service for a social network like Twitter or Instagram.

CachingConsistency & Trade-offs

Design an image hosting and delivery service like Imgur or Instagram.

CachingQueues & Async Processing

Design the watch history and continue watching feature for a service like Netflix.

CachingConsistency & Trade-offs

Design the shopping cart service for a retailer like Amazon or Walmart.

CachingConsistency & Trade-offs

Design the product catalog service for a retailer like Walmart or a Shopify store.

CachingQueues & Async Processing

Design checkout and order placement for a store like Amazon or Instacart.

Consistency & Trade-offsQueues & Async Processing

Design a document search service for a workspace like Google Drive or Confluence.

Consistency & Trade-offsQueues & Async Processing

Design a distributed job scheduler like Quartz or Airflow's scheduler.

Consistency & Trade-offsQueues & Async Processing

Design an object storage service like Amazon S3 or Google Cloud Storage.

CachingConsistency & Trade-offs

Design an audit log service for a multi-tenant SaaS product like Salesforce or GitHub.

Queues & Async Processing

Design a calendar and meeting scheduling service like Google Calendar or Outlook.

CachingQueues & Async Processing

Design the access control system for a document sharing product like Google Drive.

CachingConsistency & Trade-offs

Design a durable, replicated key-value store like DynamoDB or Cassandra.

Consistency & Trade-offsLoad Balancing & Scaling

Design the multi-region active-active architecture for a global app like Shopify.

Consistency & Trade-offsLoad Balancing & Scaling

Design a recent searches list like the one Amazon or YouTube shows in an empty search box.

CachingConsistency & Trade-offs

Design a product ratings and reviews system like the one on Amazon or Yelp.

CachingConsistency & Trade-offs

Design the restaurant menu service behind a food delivery app like DoorDash or Uber Eats.

CachingConsistency & Trade-offs

Design a package registry that serves library downloads, like npm or PyPI.

CachingConsistency & Trade-offs

Design the login session store for a large web application like GitHub.

CachingConsistency & Trade-offs