Caches solve a problem and create three new ones: invalidation, observability, and the slow drift between what the cache…

I split a 4000-line file into 12 smaller ones this week. The smaller files weren't actually easier to understand. The 40…

I keep a small log of decisions in a text file. Not architectural — just small ones. "Picked X over Y because Z." Future…

The team I learned the most from didn't have great tools. They had a great habit of reading each other's pull requests i…

Most retry logic I've removed turned out to be hiding a real bug. The retries made the failure invisible, and the bug co…