Bluesky lets anyone publish a custom feed — a little server that decides which posts show up when someone opens it. The catch: building one normally means running a firehose consumer, a database, and a hosting bill, then hand-registering an app. bsky.
Source: [Dev.to](https://dev.to/snaplink/i-built-free-no-code-bluesky-feeds-for-dev-topics-postgres-redis-docker-no-login-no-llm-5b1a)