01
Coming soon
Back-of-the-Envelope Capacity Planning
Estimate requests, storage and bandwidth in a minute with a few numbers you can remember.
Track · 9 courses
System design interview
Learn the building blocks, then work through the classic designs the way an interview runs them: requirements, estimates, a first design, then deep dives.
Who it’s for: Engineers with a system design round coming up, or anyone who wants to reason about systems at scale.
The courses, in order
2 of 9 live- 0Vote
- 02
Live25 lessons5 hours
Distributed Systems in a Day
The building blocks every design leans on: load balancing, replication, partitioning and consensus.
- 030Vote
Coming soon
Design a URL Shortener
The classic warm-up, run start to finish the way an interview runs it.
- 040Vote
Coming soon
Design a Rate Limiter
Token buckets, sliding windows and a shared counter store, from one server to a whole fleet.
- 050Vote
Coming soon
Design a Cache
Grow a cache from one process to a cluster: consistent hashing, replication, hot keys and stampedes.
- 06
Live9 lessons~3.3 hours
Design a Message Queue
One component in full depth: durability, delivery guarantees, partitions and failover.
- 070Vote
Coming soon
Design a News Feed
Fan-out on write versus on read, celebrity accounts, ranking and the caches behind a fast timeline.
- 080Vote
Coming soon
Design a Chat App
WebSockets, presence, message ordering, delivery receipts and offline sync.
- 090Vote
Coming soon
Design a Top-K Service
Count trending items across millions of events a second, first exactly and then with a sketch.
Every course stands alone and teaches what it needs. Take them in this order, or start with the one you need today.
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