Spring Boot provides [actuator endpoints][actuator-endpoints] that allows you to monitor or manage your application over JMX or HTTP. To add custom endpoint annotate Spring bean with @Endpoint.

If you have ever received zip file created on MacOS, then you know all those annoying .DS_Store files popping up all over the place. The good news is that you can delete all .DS_Store files recursively with a simple one liner.

While playing around with Git hooks I found one not very popular, but useful, command - interpret-trailers. Turns out keywords and metadata added (usually) at the end of the commit message are called trailers.