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Release Notes

Last updated: 2021-09-13 10:49:33

July 2021

Update	Description	Release Date	Documentation
Parameter templates are supported	Besides the system parameter templates provided by TencentDB for Redis, you can now create custom parameter templates to configure parameters in batches as needed.	2021-07	Managing Parameter Templates

June 2021

Update	Description	Release Date	Documentation
Auto-failover is now supported	TencentDB for Redis supports the auto-failover feature for proxy nodes and Redis server nodes to ensure service availability.	2021-06	Failover
Auto-failback is now supported	TencentDB for Redis provides the auto-failback feature for instances deployed across AZs. After the feature is enabled, if the master node is switched from the master AZ or master node group (cluster architecture) to another AZ or group after a failover occurs, it will be automatically switched back, simplifying subsequent OPS operations.	2021-06	Auto-Failback
You can now manually promote a replica node/node group to master node/node group	For multi-AZ deployed TencentDB for Redis instances in the standard/cluster architecture, you can manually promote a replica node/node group to master node/node group. You can deploy the master node in a specified AZ/node group.	2021-06	Manually Promoting to Master Node/Node Group
You can now read local nodes only	To reduce the access latency of a multi-AZ deployed instance, TencentDB for Redis allows you to read local nodes only.	2021-06	Reading Local Nodes Only

March 2021

Update	Description	Release Date	Documentation
Five-second monitoring granularity is supported	TencentDB for Redis now supports the five-second monitoring granularity. After the monitoring granularity of an instance is adjusted to five seconds, the monitoring metrics, proxy, and alarm policies of the instance, and the method of viewing monitoring data in the Cloud Monitor console will change.	2021-03	Notices of Monitoring Upgrade and Alarm Policy Changes

December 2020

Update	Description	Release Date	Documentation
TencentDB for Redis Hybrid Storage Edition has been renamed TencentDB for Tendis	TencentDB for Redis Hybrid Storage Edition has been renamed TencentDB for Tendis. You can access TencentDB for Tendis in its own console.	2020-12	TencentDB for Tendis
Multi-AZ deployment is supported	You can now deploy TencentDB for Redis master node and replica nodes in different availability zones of the same region. Multi-AZ deployed instances have higher availability and better disaster recovery capability than single-AZ deployed instances.	2020-12	Multi-AZ Deployment

September 2020

Update	Description	Release Date	Documentation
Monitoring at five-second granularity is supported	The monitoring feature of TencentDB for Redis has been updated, with the monitoring granularity being narrowed down from one minute to five seconds.	2020-09	Monitoring at Five-Second Granularity

July 2020

Update	Description	Release Date	Documentation
Version upgrade now supported	TencentDB for Redis now supports version upgrade, so you can upgrade from a lower version of Standard Edition to a higher one, including from 2.8 to 4.0, from 2.8 to 5.0, and from 4.0 to 5.0.	2020-07	Upgrading Instance Version
Architecture upgrade now supported	TencentDB for Redis now supports quick upgrade from standard architecture to cluster architecture to help your business expand the performance and capacity with speed.	2020-07	Upgrading Instance Architecture

June 2020

Update	Description	Release Date	Documentation
TencentDB for Redis Hybrid Storage Edition launched	TencentDB for Redis Hybrid Storage Edition is launched. It is 100% compatible with Redis protocols, reduces memory costs by up to 80%, and delivers a hot data performance comparable with that of Memory Edition, achieving a perfect balance among compatibility, performance, and costs.	2020-06	Hybrid Storage Edition (Cluster Architecture)

April 2020

Update	Description	Release Date	Documentation
DTS now supports Redis 5.0	You can now migrate data and upgrade instances to Redis 5.0 with Data Transmission Service (DTS).	2020-04	Migration with DTS Version Upgrade with DTS

March 2020

Update	Description	Release Date	Documentation
Service unavailable alarm feature now supported	Redis now supports the service unavailable alarm feature. In addition, users can also set alarms for instance master/replica switch, read-only replica failover, and read-only replica unavailability.	2020-03	Configuring Alarms
Adjusting bandwidth in the console now supported	You can now adjust instance network bandwidth on the instance details page in the Redis console. The bandwidth specifications for the cluster edition have been fully upgraded, with shard specifications upgraded to 384 Mbps.	2020-03	-
Monitoring view for Redis 2.8 now updated	To provide more accurate monitoring information, Tencent Cloud has updated the monitoring view of Redis 2.8 instance to cluster view. If you use APIs to get monitoring data from Cloud Monitor, you need to change the view parameter from `redisuuid` to `cluster` in the code.	2020-03	-

February 2020

Update	Description	Release Date	Documentation
Upgraded the default number of databases in an instance to 256	For Redis 2.8, 4.0, and 5.0 standard and cluster editions you purchased this month, the default number of databases in an instance has been upgraded from 16 to 256.	2020-02	Memory Edition (Standard Architecture) Memory Edition (Cluster Architecture)

January 2020

Update	Description	Release Date	Documentation
Released Redis 5.0	Redis 5.0 standard and cluster editions have been released with all features of Redis 4.0 reserved, and support the latest STREAM data structure, new ZSET commands `ZPOPMIN` and `ZPOPMAX`, scaling without disconnection, 4 TB of storage capacity, and tens of millions of concurrent QPS.	2020-01	Memory Edition (Standard Architecture) Memory Edition (Cluster Architecture)

October 2019

Update	Description	Release Date	Documentation
Access management now supported	You can now create policies through access management which grant sub-accounts permissions to use the resources they need.	2019-10	Access Management
Account management in the console now supported	TencentDB for Redis provides read/write permission control and routing policy control through the account mechanism, which helps meet the needs of business permission management in complex scenarios. Currently, only the TencentDB for Redis community edition (excluding Redis 2.8) supports account settings.	2019-08	Managing Accounts

September 2019

Update	Description	Release Date	Documentation
Released monitoring 2.0	Redis monitoring 2.0 has been released, adding more than 16 monitoring metrics, including network delay, response error and other monitoring metrics.	2019-09	Monitoring Feature

August 2019

Update	Description	Release Date	Documentation
Password-free access now supported	To enable password-free access, please submit a ticket. We recommend limiting server access by using security groups when password-free access is enabled.	2019-08	Password-free Access
Disabling high-risk commands online now supported	TencentDB for Redis is now able to disable some Redis commands that may cause service instability or accidentally delete data, including `flushall`, `flushdb`, `keys`, `hgetall`, `eval`, `evalsha`, and `script`.	2019-08	Disabling Commands
DTS now supports cluster edition	You can now migrate self-created Redis Cluster (3.0, 3.2, and 4.0) or Codis (2.8 and 3.2) databases to TencentDB for Redis with DTS.	2019-08	Migration with DTS

July 2019

Update	Description	Release Date	Documentation
Version upgrade with DTS is now supported	TencentDB for Redis instance version can now be upgraded through Data Transfer Service (DTS) with hot migration, which guarantees instance service continuity during the upgrade process and can update incremental data in real time.	2019-07	Version Upgrade with DTS
Released Redis 4.0 standard edition	Redis 4.0 Standard Edition supports 1-master 5-replica mode, read/write separation, scaling without disconnection, and high availability.	2019-07	Memory Edition (Standard Architecture)

October 2018

Update	Description	Release Date	Documentation
Released Redis 4.0 cluster edition	Redis 4.0 cluster edition has been released and supports 4 TB of storage capacity, tens of millions of concurrent access, scaling without storage capacity loss, and automatic read/write separation.	2018-10	Memory Edition (Cluster Architecture)