Engineering blog
Build logs and deep dives on real systems: the code, the benchmarks, and the design decisions that held up - or didn't.
Building Netflix-style seek previews: one sprite sheet, one WebVTT file
A video thumbnail service in Python: streamed uploads, a SHA-256 content cache, Celery, FFmpeg and WebVTT sprite maps, with benchmarks and five fixes.
Building a URL shortener in Go that serves 28,000 redirects per second
A production-style URL shortener in Go: two-tier cache, Bloom filter, singleflight and Snowflake IDs, with real benchmarks and the three things to change.