Change History

**Table 1** Change history
Released On	Description
2024-06-25	Added a description about tag policies in Creating a DCS Redis Instance and Managing Tags.
2023-09-26	Added description about parameter active-expire-num in section Modifying Configuration Parameters.
April 3, 2023	This issue is the ninth official release, which incorporates the following changes: Added Notes and Constraints, Process of Using DCS, Accessing a DCS Memcached Instance (Discontinued), Switching DCS Instance IP Addresses, Common DCS Metrics, and Data Migration Guide. Added some FAQs and other optimization.
January 3, 2023	This issue is the eighth official release, which incorporates the following change: Added description about changing the replica quantity in Modifying DCS Instance Specifications. Added Parameter Templates. Added description about Redis 6.0. Added Transmitting DCS Redis Data with Encryption Using SSL. Updated Creating a DCS Redis Instance.
October 19, 2022	This issue is the seventh official release, which incorporates the following changes: Added the following FAQs: Connection Pool Selection and Recommended Jedis Parameter Settings Why Does a Key Disappear in Redis? Will Cached Data Be Retained After an Instance Is Restarted? How Do I View Current Concurrent Connections and Maximum Connections of a DCS Redis Instance? Why Is the Rejected Connections Metric Displayed? Why Is Flow Control Triggered? How Do I Handle It? Big/Hot Key Analysis Added Troubleshooting.
2022-04-12	This issue is the first official release.