Building an Agentic Personal Trainer - Part 8: Testing and Debugging Agents
How do you test an AI agent? Unit tests don't cover "it gave bad advice." Verbose mode became my best debugging tool—watching the agent think out loud.
Building a Local Semantic Search Engine - Part 4: Caching for Speed
First search on a new directory: wait for every chunk to embed. A hundred chunks? A few seconds. A thousand? You're waiting—and burning electricity (or API dollars if you're using a cloud service). Second search: instant. The difference? A JSON file storing pre-computed vectors. Caching turned "wait for it" into "already done."