Achieve faster switchover for Amazon RDS Blue/Green Deployments with large number of connections
Database Blog
This article explains an improvement for faster switchover in Amazon RDS Blue/Green Deployments when dealing with a large number of database connections. It discusses how the new OFFLINE_MODE feature in Aurora MySQL and RDS for MySQL helps quickly clean up existing connections during the switchover process.
Specifically, the article covers:
- Background on Blue/Green Deployments and the connection cleanup step during switchover
- How OFFLINE_MODE works to quickly disconnect clients and block new connections
- A test demonstrating significantly reduced write downtime (42 seconds) when switching over an Aurora MySQL cluster with over 15,000 connections, thanks to OFFLINE_MODE
- Conclusion highlighting this feature's availability and best practices around Blue/Green Deployments
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