![RailsCasts (Mobile) show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/035/010/small/railscasts-mobile.jpg)
Summary: When two people attempt to update the same record near the same time, one of the updates will likely be overwritten. You can solve this problem with optimistic locking.
Summary: When two people attempt to update the same record near the same time, one of the updates will likely be overwritten. You can solve this problem with optimistic locking.