Catalog Pricing

Ryan

ryan-gang

joined 4 years ago

Product @ CodeCrafters (YC S22).

Challenges

Build your own Docker

using Python

Learn about kernel namespaces, chroot, the registry API and more

completed

Build your own SQLite

using Python

Learn about SQL syntax, SQLite's file format, B-trees and more

completed

Build your own Git

using Python

Learn about git objects, plumbing commands and more

completed

Build your own BitTorrent

using JavaScript

Learn about .torrent files, the BitTorrent Peer Protocol and more

0/19 stages

Build your own DNS server

using Python, Ruby and TypeScript

Learn about the DNS protocol, DNS record types and more.

1/8 stages

Build your own Redis

using Go, Rust, Gleam, Haskell, Scala, JavaScript, C++, TypeScript, Clojure and Python

Learn about TCP servers, the Redis protocol and more

44/124 stages

Build your own Interpreter

using Go

Learn about tokenization, ASTs, tree-walk interpreters and more.

57/84 stages

Build your own Shell

using Python and JavaScript

Learn about parsing shell commands, executing programs and more

28/76 stages

Build your own HTTP server

using Go, C++, JavaScript, C, Ruby and Python

Learn about TCP servers, the HTTP protocol and more

11/14 stages

Build your own Kafka

using Rust, C#, Go and Python

Learn about TCP servers, the Kafka wire protocol and more.

8/25 stages

Build your own grep

using Go, C#, C++, Gleam and Python

Learn about regex syntax: character classes, quantifiers and more

16/33 stages

Build your own Claude Code

using Python

Learn about LLM APIs, tool calling, agent loops and more

3/18 stages

April 2026

Started the Build your own Claude Code challenge using Python

July 2025

Started the Build your own grep challenge using Python

April 2025

Started the Build your own Kafka challenge using Python
Started the Build your own Shell challenge using JavaScript

March 2025

Completed the Build your own SQLite challenge using Python

December 2024

Started the Build your own Kafka challenge using Go

November 2024

Started the Build your own Kafka challenge using C#

September 2024

Started the Build your own Kafka challenge using Rust

July 2024

Started the Build your own Interpreter challenge using Go

June 2024

Started the Build your own Git challenge using C++
Started the Build your own HTTP server challenge using JavaScript
Started the Build your own grep challenge using Gleam

May 2024

Started the Build your own Redis challenge using Clojure
Started the Build your own HTTP server challenge using C
Started the Build your own grep challenge using C++
Started the Build your own HTTP server challenge using C++
Started the Build your own Shell challenge using Python
Started the Build your own SQLite challenge using Gleam
Started the Build your own DNS server challenge using TypeScript

April 2024

Started the Build your own Redis challenge using C++
Started the Build your own Redis challenge using JavaScript
Started the Build your own Redis challenge using TypeScript
Started the Build your own Redis challenge using Scala
Started the Build your own Redis challenge using Haskell
Started the Build your own Redis challenge using Gleam
Started the Build your own DNS server challenge using Ruby
Started the Build your own HTTP server challenge using Ruby
Started the Build your own grep challenge using C#
Started the Build your own Git challenge using C#
Started the Build your own BitTorrent challenge using JavaScript

March 2024

Started the Build your own HTTP server challenge using Go
Started the Build your own Redis challenge using Rust
Started the Build your own grep challenge using Go

January 2024

Started the Build your own Redis challenge using Go
Started the Build your own DNS server challenge using Python

December 2023

Completed the Build your own Git challenge using Python

October 2023

Started the Build your own HTTP server challenge using Python

September 2022

Started the Build your own Redis challenge using Python

July 2022

Joined CodeCrafters