For those of you using Apache 2 as a development proxy for Django (or the like) and wondering why every time you get a 503 error when Django reloads its code you have to wait much too long still getting even more 503 errors although Django is already done with reloading and what the dingbats everything should be running smoothly…

…it could be that you just need to set the retry parameter of the ProxyPass directive to 0 (zero).

You are welcome!