Websites, including supporting databases, are updated with little or no downtime. In one aspect, a database is replicated prior to updating, so that updates can be performed on one copy while the other remains operational. In another aspect, the data remains in one location while an application programming interface for interacting with the data using new software code is introduced. Another application programming interface remains operational while the update is taking place. Public and private synonyms are used to direct web traffic to the appropriate application programming interface during the update process.