Vow: PostgreSQL Migration Runner for Go
A standalone SQL migration runner, advisory locking, paired up/down files, checksum drift detection, built to be embeddable via fs.FS. Grew out of needing something dhara could depend on without dragging in a framework.
GoPostgreSQLpgxDatabase ToolingVolter
A Python rate limiting library with in-memory and Redis-backed implementations of token bucket and sliding window log, built for correctness across multiple processes, not just a single one.
PythonRedisLua ScriptingDistributed SystemsConcurrencySystem DesignFastAPIPyPIDhara: Distributed Task Queue in Go
A production-grade background job system built on PostgreSQL. Worker pools, heartbeats, reaper, dead-letter queue, and Prometheus observability. No external queue. No framework. Just Go.
GoPostgreSQLpgxDatabase ToolingDistributed SystemsGate: URL Shortener
Full-stack URL shortening service with sub-millisecond cached redirects, JWT authentication, and click analytics.
JavaSpring BootMySQLDockerCachingRate LimitingRedis: Built from Scratch in Java
83,000 ops/s · 36 commands · RESP protocol · replication · pub/sub · virtual threads. No libraries. Just java.net and java.util.concurrent.
JavaBuild Your Own XRedisNetworkingConcurrencyMy Own Shell in Java
Built my own shell to understand how terminals work under the hood.
JavaBuild Your Own XSystem ProgrammingShell InternelsLox Interpreter in Go
Built a complete Lox interpreter to deeply understand interpreters.
GoBuild Your Own XInterpreterProgramming LanguageAST