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Put this wisdom into action with our revolutionary platform. Don't just read about system design—practice it, refine it, and master it through actionable feedback.
Structured Learning
"Give a person a fish, and you feed them for a day; teach a person to fish, and you feed them for a lifetime." - Lao Tzu, Chinese philosopher
We don't just hand you solutions
we equip you with a conceptual toolkit to solve problems yourselves —-not just the ones we discuss.
Common Patterns, Unlimited Applications
No more reinventing the wheel for each unique challenge. Utilize our comprehensive design templates that act as a powerful foundation for solving a multitude of issues.
Real-World Code Examples
"Talk is cheap, show me the code." - Linus Torvalds, creator of Linux
Don't just read about it; experience it. Our platform offers not just blog-post theories but actual code snippets and examples that you can pull and run on your machine.
Dive into our 'Codelabs' for hands-on understanding
Forget convoluted setups; complex examples comes wrapped in a Docker container that you can easily clone and execute. This bridges the gap between theory and real-world application, making your learning journey as frictionless as possible.
Editorial Solutions with Code Implementation
Get the high level overview of the solution, then dive into the code to see how it's implemented. Whether you are a visual learner or a code learner, we've got you covered.
So yeah, it's pretty awesome. But don't just take our word for it. Try a practice problem!
Design URL Shortener
Design a URL Shortener service like bit.ly
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Users should be able to input a long URL and receive a unique, shortened alias. The shortened URL should use a compact format with English letters and digits to save space and ensure uniqueness.
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When users access a shortened URL, the service should redirect them seamlessly to the original URL with minimal delay.
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The system should be able to track the number of times each shortened URL is accessed to provide insights into link usage.
Design LeetCode
Design a coding contest platform like LeetCode.
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Users should be able to view problem descriptions, examples, constraints, and browse a list of problems.
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Users should be able to solve coding questions by submitting their solution code and running it against built-in test cases to get results.
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User can participate in coding contest. The contest is a timed event with a fixed duration of 2 hours consisting of four questions. The score is calculated based on the number of questions solved and the time taken to solve them. The results will be displayed in real time. The leaderboard will show the top 50 users with their usernames and scores.
Design Rate Limiter
Design a distributed rate limiter to protect API availability and prevent abuse
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The rate limiter must run inline at the API gateway to block excess traffic before it reaches backend services.
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The gateway must call a limiter module and react correctly on allow vs deny, including returning proper HTTP responses to the client.
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The system must determine a stable identity per request (user, API key, tenant, IP) to track usage fairly and prevent abuse.
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The limiter must allow short bursts of requests while enforcing a long-term average rate per identity.
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The limiter must enforce limits correctly across multiple API gateway instances, so traffic cannot bypass limits by hitting different instances.
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Operators must be able to update rate limit policies safely without redeploying gateways.
Design Webhook
Design a webhook service that processes incoming requests and ensures efficient, secure handling of real-time events, such as payment notifications from services like Stripe or Shopify.
If you prefer the video format, here's a walkthrough of the problem:
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Accept API calls to receive event notifications (e.g., payment processed or order shipped), execute corresponding operations, and persist original event data and operation results for tracking, auditing, and debugging.
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The service must ensure events are processed even if system components fail, maintaining reliability for critical data.
Design Pastebin
Pastebin lets users store and share plain text through unique URLs. Developers use it for code snippets and configuration files. The core challenge: generate unique short URLs and serve content with low latency at scale.
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Users upload text content. The system generates a unique short URL and persists the text. The URL is returned immediately for sharing.
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Users access a paste via its unique URL. The system retrieves and returns the text content with low latency.
Design URL Shortener
Design a URL Shortener service like bit.ly
-
Users should be able to input a long URL and receive a unique, shortened alias. The shortened URL should use a compact format with English letters and digits to save space and ensure uniqueness.
-
When users access a shortened URL, the service should redirect them seamlessly to the original URL with minimal delay.
-
The system should be able to track the number of times each shortened URL is accessed to provide insights into link usage.
Design LeetCode
Design a coding contest platform like LeetCode.
-
Users should be able to view problem descriptions, examples, constraints, and browse a list of problems.
-
Users should be able to solve coding questions by submitting their solution code and running it against built-in test cases to get results.
-
User can participate in coding contest. The contest is a timed event with a fixed duration of 2 hours consisting of four questions. The score is calculated based on the number of questions solved and the time taken to solve them. The results will be displayed in real time. The leaderboard will show the top 50 users with their usernames and scores.
Design Rate Limiter
Design a distributed rate limiter to protect API availability and prevent abuse
-
The rate limiter must run inline at the API gateway to block excess traffic before it reaches backend services.
-
The gateway must call a limiter module and react correctly on allow vs deny, including returning proper HTTP responses to the client.
-
The system must determine a stable identity per request (user, API key, tenant, IP) to track usage fairly and prevent abuse.
-
The limiter must allow short bursts of requests while enforcing a long-term average rate per identity.
-
The limiter must enforce limits correctly across multiple API gateway instances, so traffic cannot bypass limits by hitting different instances.
-
Operators must be able to update rate limit policies safely without redeploying gateways.
Design Webhook
Design a webhook service that processes incoming requests and ensures efficient, secure handling of real-time events, such as payment notifications from services like Stripe or Shopify.
If you prefer the video format, here's a walkthrough of the problem:
-
Accept API calls to receive event notifications (e.g., payment processed or order shipped), execute corresponding operations, and persist original event data and operation results for tracking, auditing, and debugging.
-
The service must ensure events are processed even if system components fail, maintaining reliability for critical data.
Design Pastebin
Pastebin lets users store and share plain text through unique URLs. Developers use it for code snippets and configuration files. The core challenge: generate unique short URLs and serve content with low latency at scale.
-
Users upload text content. The system generates a unique short URL and persists the text. The URL is returned immediately for sharing.
-
Users access a paste via its unique URL. The system retrieves and returns the text content with low latency.