CodeCrafters CodeCrafters

Build your own Redis

Learn about TCP servers, the Redis protocol and more

Start Building
redis redis redis redis redis redis redis redis redis redis redis redis redis redis

In this challenge, you'll build a toy Redis clone that's capable of handling basic commands like PING, GET and SET. Along the way, we'll learn about event loops, the Redis Protocol and more.

Stages

Bind to a port
< 5 minutes

In this stage, you'll start a TCP server on port 6379, which is the default port that Redis uses.

Respond to PING
5-10 minutes

In this stage, you'll respond to the PING command. You'll use the Redis protocol to encode the reply.

show all...
“ The Redis challenge was extremely fun. I ended up having to read the Redis Protocol specification doc pretty carefully in its entirety! The result felt like lightly-guided independent study, if that makes sense. (Which, again, was lots of fun) avatar Charles Guo Software Engineer, Stripe “ I think the instant feedback right there in the git push is really cool. Didn't even know that was possible! avatar Patrick Burris Senior Software Developer, CenturyLink