We push to production constantly throughout the day, whenever a new feature, fix, or update is finished and the developer is confident that it works (and the un

We push to production constantly throughout the day, whenever a new feature, fix, or update is finished and the developer is confident that it works (and the unit tests pass). We have a system set up to do one-click (well, four-click) deployments to all of our servers, plus rolling graceful restarts and point-in-time rollbacks or specific-commit deploys. We do double-digit deploys daily and as we get more developers that number increases. We did 30 deploys yesterday, and >300 in September, and the amount of time, trouble, and frustration it's saved us is immeasurable.