dima

Suppose you need to do something when some file system event occurs. For example, restart the web server when files change. Quite a common practice in development: recompile the project and restart it on the fly immediately after editing the source files.

This site is written in Go, and I recently decided to add a similar hot-reload for markdown files with articles: make the web server notice a new file in it's data directories and repopulate the internal in-memory-storage without restarting itself. And I wanted to "listen" to the file system, not scan it every few seconds.

Fortunately, there is already a good listener fsnotify, which can observe given directories. (Not recursively though, but I don't have that many directories.)