Caching System Design Questions

Design a URL shortener like TinyURL or Bitly.

Database ScalingLoad Balancing & Scaling

Design a distributed rate limiter for a company's public APIs.

Consistency & Trade-offsLoad Balancing & Scaling

Design a Pastebin-style text snippet sharing service.

Database ScalingLoad Balancing & Scaling

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

Database ScalingQueues & Async Processing

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

Database ScalingLoad Balancing & Scaling

Design a distributed in-memory cache like Redis or Memcached.

Consistency & Trade-offsLoad Balancing & Scaling

Design a maps routing and ETA service like Google Maps.

Database ScalingLoad Balancing & Scaling

Design a search autocomplete (typeahead) service.

Database ScalingLoad Balancing & Scaling

Design a large-scale distributed web crawler.

Database ScalingQueues & Async Processing

Design a personalized recommendation system like Netflix's.

Database ScalingQueues & Async Processing

Design a real-time fraud detection system for payments like Stripe Radar.

Consistency & Trade-offsQueues & Async Processing

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

Database ScalingQueues & Async Processing

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

Consistency & Trade-offsDatabase Scaling

Design dynamic surge pricing for a ride-hailing or delivery app like Uber or DoorDash.

Consistency & Trade-offsQueues & Async Processing

Design an online presence and last-seen service like WhatsApp or Slack.

Queues & Async Processing

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

Consistency & Trade-offsDatabase Scaling

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

Consistency & Trade-offsDatabase Scaling

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

Database ScalingQueues & Async Processing

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

Consistency & Trade-offsDatabase Scaling

Design a live video broadcasting platform like Twitch or YouTube Live.

Load Balancing & Scaling

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

Consistency & Trade-offsDatabase Scaling

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

Database ScalingQueues & Async Processing

Design a trending topics feature like Twitter Trends or Google Trends.

Consistency & Trade-offsQueues & Async Processing

Design budget enforcement and pacing for an ad platform like Google Ads or Meta Ads.

Consistency & Trade-offsQueues & Async Processing

Design a feature flag service like LaunchDarkly or Unleash.

Consistency & Trade-offsQueues & Async Processing

Design a service discovery system like Consul, Eureka, or Kubernetes DNS.

Consistency & Trade-offsLoad Balancing & Scaling

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

Consistency & Trade-offsDatabase Scaling

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

Database ScalingQueues & Async Processing

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

Consistency & Trade-offsDatabase Scaling

Design an API gateway like Kong or AWS API Gateway.

Consistency & Trade-offsLoad Balancing & Scaling

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

Consistency & Trade-offsDatabase Scaling

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

Consistency & Trade-offsDatabase Scaling

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

Consistency & Trade-offsDatabase Scaling

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

Consistency & Trade-offsDatabase Scaling

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

Consistency & Trade-offsDatabase Scaling