On March 21st, 2015, at 12 PM UTC, GitHub planned to upgrade a significant portion of its database infrastructure to enhance speed and reliability, requiring the site to enter maintenance mode for an estimated 15 minutes. During this period, HTTP, API, and Git access to GitHub.com would be unavailable as they updated their MySQL Server version and moved a large portion of data to an isolated cluster, aiming to improve scalability and accommodate data growth. Updates regarding the maintenance progress were to be provided on their status page and @githubstatus at the start and completion of the process.