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Daniel Connelly

dhconnelly
Go Java Kotlin
joined 3 years ago

staff eng at airbnb, https://dhconnelly.com

Challenges

Build your own Docker
using Go
Build your own Docker
Learn about kernel namespaces, chroot, the registry API and more
completed
Go Rust C
Build your own Interpreter
using Java
Build your own Interpreter
Learn about tokenization, ASTs, tree-walk interpreters and more.
completed
Java Kotlin
Build your own SQLite
using Java
Build your own SQLite
Learn about SQL syntax, SQLite's file format, B-trees and more
completed
Java Python Go C++
Build your own HTTP server
using Kotlin
Build your own HTTP server
Learn about TCP servers, the HTTP protocol and more
completed
Kotlin C++ C Rust Go
Build your own BitTorrent
using Rust and C++
Build your own BitTorrent
Learn about .torrent files, the BitTorrent Peer Protocol and more
9/19 stages
C++ Rust
Build your own DNS server
using Java
Build your own DNS server
Learn about the DNS protocol, DNS record types and more.
0/8 stages
Java
Build your own Git
using Java
Build your own Git
Learn about git objects, plumbing commands and more
6/7 stages
Java
Build your own Shell
using C and Go
Build your own Shell
Learn about parsing shell commands, executing programs and more
22/43 stages
Go C
Build your own Redis
using Java, Kotlin, Rust and Go
Build your own Redis
Learn about TCP servers, the Redis protocol and more
17/97 stages
Go Rust Kotlin Java
November 2025
June 2025
April 2025
January 2025
September 2024
August 2024
June 2024
May 2024
April 2024
October 2023
August 2022
  • Joined CodeCrafters