Faisal Hassan

Challenges

Build your own Git

using Java

Learn about git objects, plumbing commands and more

completed

Build your own HTTP server

using Java

Learn about TCP servers, the HTTP protocol and more

8/14 stages

Build your own Redis

using JavaScript and Java

Learn about TCP servers, the Redis protocol and more

13/124 stages

Build your own DNS server

using Java

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

7/8 stages

Build your own SQLite

using Java

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

2/9 stages

Build your own Shell

using Java

Learn about parsing shell commands, executing programs and more

12/76 stages

Build your own grep

using Java

Learn about regex syntax: character classes, quantifiers and more

12/33 stages

Build your own Interpreter

using Java

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

1/84 stages

Build your own BitTorrent

using Java

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

0/19 stages

Build your own Kafka

using Java

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

1/25 stages

Build your own Claude Code

using Java

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

13/18 stages

• Started the Build your own Claude Code challenge using Java

• Started the Build your own Kafka challenge using Java

• Started the Build your own BitTorrent challenge using Java

• Started the Build your own Interpreter challenge using Java

• Started the Build your own grep challenge using Java

• Started the Build your own Shell challenge using Java

• Started the Build your own SQLite challenge using Java

• Started the Build your own DNS server challenge using Java

• Completed the Build your own Git challenge using Java

• Started the Build your own Redis challenge using Java

• Started the Build your own HTTP server challenge using Java

• Started the Build your own Redis challenge using JavaScript

• Joined CodeCrafters