I believe most of developers in Rails community use delegate method to define
delegators, because (according to documentation) it looks nicer and it’s API
more human readable. I disagree and encourage you to look at Forwardable.
If you are running Sidekiq, then, most likely you would like to share it’s redis connection with other bits of your application. For example, you want to implement a throttler for some Rails action, or you want to use some gem, that needs redis, e.g. redis-semaphore. Well, it’s easier than it might sound…
dtach is a tiny program that emulates detach feature of screen. You can use it to run, for example WeeChat in background without suspending it. And tmux is an awesome feature-rich alternative to screen. So why one would want to use tmux in place of dtach? Personally I do because it allows to change X window title, thus I can make sure WeeChat is always opened on 8th workspace in my XMonad without any extra hacks.