One feature of almost every modern commercial website is the location finder. Enter in a search address, and site displays the closest locations to it with the distances (as the crow flies). I ran into a couple of peculiar bugs trying to calculate distances in SQL. Floating point math is never easy, and these are...

This one is quite simple to be honest. Assuming you have Redis already installed and set up correctly you can just change your php-fpm pool definition to include: php_value[session.save_handler] = redis php_value[session.save_path] = "tcp://127.0.0.1:6379" If you’re using password for logging into redis you would...