As a fast-growing open source NewSQL database, TiDB frequently releases new features and improvements. If you are a TiDB user, you may have found it hard to decide whether or not to upgrade your version. You may have also wondered how to make your upgrade journey safer, smoother, and even unnoticed by business. 

On the one hand, new TiDB versions have new features that can support some of the new demands in your business or can fix some known security loopholes or bugs.