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Summary : Usually the product optimization iteration method is to directly release a certain version to all users. Once you encounter an online accident (or BUG), it will have a great impact on users, and the problem solving cycle is long, and sometimes you have to Rolling back to the previous version seriously affected the user experience. Use gray release. When the version is upgraded, some users will use the new version, and other users will continue to use the old version. After the new version is stable, gradually expand the scope and migrate all user traffic to the new version.
Gray release is a means of application service grid for service governance. The application service grid has a variety of typical gray-scale publishing processes built in, and provides a gray-scale publishing guide, which is convenient for users to conduct gray-scale publishing practices.
Users can automatically configure the gray release process provided by the application service grid to realize unattended gray release.
The gray-scale rule of the application service grid can be based on the weight to divide the traffic proportionally, or the request for specific content can be sent to the gray-scale version according to the content accessed by the service.
In the multi-cluster scenario, based on the flexible distribution capabilities of the application service grid, users can choose to deploy the gray version and the production version in different clusters to gradually split the traffic.
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