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TencentDB for Redis®
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    Release Notes

    Last updated: 2024-11-25 15:11:20
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      October 2024

      Update
      Description
      Documentation
      Security vulnerability fixes
      Redis officially announced severe security vulnerabilities in versions 6.2 and 7.2, including CVE-2024-31449, CVE-2024-31227, and CVE-2024-31228. TencentDB for Redis® has addressed and resolved these vulnerabilities.

      September 2024

      Update
      Description
      Documentation
      Adjustment of additional bandwidth policy
      For newly added instances, additional bandwidth is now enabled by default. Users no longer need to manually apply for additional bandwidth when the standard bandwidth is insufficient.

      August 2024

      Update
      Description
      Documentation
      Support for Memcached Edition instances
      Compatible with Memcached protocol version 1.6, this high-performance, memory-level distributed storage service is specifically designed for high-speed caching scenarios.
      Storage Engine
      Create Redis Instance
      View Memcached Instance
      Clone Memcached Instance
      Inquire Memcached Slow Log
      SNAT Monitoring Memcached Instance
      Memcached Command Compatibility

      May 2024

      Update
      Description
      Documentation
      Redis 7.0
      TencentDB for Redis 7.0 has been officially launched, fully compatible with community edition commands.
      Create Redis Instance
      Overview of Community Edition Command Support

      April 2024

      Update
      Description
      Documentation
      Rehash maintenance time window
      Added support for the rehash-maintenance-time parameter, allowing users to specify whether rehash operations can be performed during the maintenance time window.

      March 2024

      Update
      Description
      Document
      Added global replication monitoring metrics.
      Supports graphical monitoring of the command count deviation during the global replication process between the primary instance and disaster recovery instances, as well as the synchronization latency in remote synchronization.

      February 2024

      Update
      Description
      Document
      One-click connectivity checker
      If the connection to TencentDB for Redis instance fails, it is recommended to first use the one-click connectivity checker to identify the cause.

      January 2024

      Update
      Description
      Document
      Added monitoring metrics.
      Adds a monitoring metric for the number of keys with expiration time set.

      February 2023

      Update
      Description
      Document
      Supported the configuration of backup file download rules
      To prevent database backup data from being dragged, TencentDB for Redis allows you to download backup files from specific servers on the allowed private network.
      
      Supported the selection of billing methods for clone instances
      When cloning a complete new instance based on the current backup file, you can choose the pay-as-you-go billing mode.
      

      November 2022

      Update
      Description
      Document
      Released Redis 6.2
      Redis 6.2 is fully released, which supports standard and cluster architectures, read/write separation, scaling without disconnection, and ultra high availability.
      Supported exporting parameters as a file
      On the Parameter Settings page in the console, you can export the parameter file of the current instance to easily view them locally.

      October 2022

      Update
      Description
      Document
      Optimized the instance list in the console
      The Deployment Mode column is added in the instance list to indicate whether an instance is deployed across AZs.
      When exporting the instance list information, you can aggregate tags for display, which are separated by |.

      September 2022

      Update
      Description
      Document
      Added monitoring metrics
      The Max Connections Utilization of Node metric is added to monitor the maximum connection utilization of all proxy nodes in an instance.

      August 2022

      Update
      Description
      Document
      Supported querying slow logs of read-only replicas
      TencentDB for Redis supports slow query of read-only replica to help you troubleshoot performance problems of read-only operations.
      -
      Supported smooth scale-in to the 256 MB specification
      TencentDB for Redis in standard architecture supports smooth reduction of memory capacity from 1 GB or higher to 256 MB.

      July 2022

      Update
      Description
      Document
      Optimized statistical algorithm for traffic and throttling that triggers monitoring metrics
      TencentDB for Redis now provides optimized statistical algorithm for inbound/outbound traffic and throttling.
      -
      Supported the 256 MB specification for the standard architecture
      The minimum memory specification (256 MB) is available for TencentDB for Redis 4.0 and 5.0 Memory Edition (Standard Architecture) instances in more AZs.

      June 2022

      Update
      Description
      Document
      Supported SSL encryption
      TencentDB for Redis supports SSL encryption to implement encrypted data transfer.

      May 2022

      Update
      Description
      Document
      Supported minor version upgrade
      TencentDB for Redis supports minor version upgrade, so that you can upgrade your instance to a newer version for more features.
      Supported proxy upgrade
      Minor versions of the TencentDB for Redis proxy are released from time to time to add more database features or fix known bugs.

      April 2022

      Update
      Description
      Document
      Upgraded the global replication feature
      Multi-AZ instances can be added to a global replication group, and existing instances can be quickly upgraded to global replication instances.

      February 2022

      Update
      Description
      Document
      Supported architecture upgrade for multi-AZ deployed instances
      Multi-AZ deployed instances can be upgraded from the standard architecture to cluster architecture.
      Supported instance clone for multi-AZ deployed instances
      Multi-AZ deployed instances allow you to clone a complete instance from a backup file.

      January 2022

      Update
      Description
      Document
      Supported global replication
      The global replication feature allows you to add and remove instances, switch instance roles, and delete replication groups.
      Supported custom backup retention period
      You can apply for customizing the retention period of backup files through an allowlist.
      Added the API for failure simulation
      Instances in the same AZ support calling the KillMasterGroup API for failure simulation testing.
      Added the API for master-replica switch
      Instances in the same AZ support calling the ChangeReplicaToMaster API to promote a replica node (group) to a master node for master-replica switch.

      December 2021

      Update
      Description
      Document
      Supported the 256 MB memory specification for TencentDB for Redis 4.0 and 5.0 Memory Edition (Standard Architecture)
      The minimum memory specification of TencentDB for Redis 4.0 and 5.0 Memory Edition (Standard Architecture) instances can be 256 MB. Currently, this is supported only in Shanghai Zone 5, Beijing Zone 6, and Guangzhou Zone 6.

      November 2021

      Update
      Description
      Document
      Supported system default templates
      TencentDB for Redis now provides default parameter templates applicable to Redis 2.8 standard architecture, Redis 4.0 standard architecture, Redis 4.0 cluster architecture, Redis 5.0 standard architecture, and Redis 5.0 cluster architecture. You can view them on the parameter template page in the console.
      Supported enabling public network access
      TencentDB for Redis allows you to enable public network access in the console, so that you can connect to your TencentDB for Redis instance from a CVM instance in different VPCs over the public network.

      July 2021

      Update
      Description
      Document
      Supported parameter template
      Besides the system parameter templates provided by TencentDB for Redis, you can create custom parameter templates to configure parameters in batches as needed.

      June 2021

      Update
      Description
      Document
      Supported automatic failover
      TencentDB for Redis supports the automatic failover feature for proxy nodes and Redis server nodes to ensure service availability.
      Auto-Failback
      TencentDB for Redis provides the automatic 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.
      Manually Promoting to Master 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.
      Reading Local Nodes Only
      To reduce the access latency of a multi-AZ deployed instance, TencentDB for Redis allows you to read local nodes only.

      March 2021

      Update
      Description
      Document
      Fully supported monitoring metrics at a 5-second granularity
      TencentDB for Redis now supports the 5-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 TCOP console will change.

      December 2020

      Update
      Description
      Document
      Renamed TencentDB for Redis Hybrid Storage Edition 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.
      Supported multi-AZ deployment
      You can now deploy TencentDB for Redis master and replica nodes in different availability zones (AZs) of the same region. Multi-AZ deployed instances have higher availability and better disaster recovery capability than single-AZ deployed instances.

      September 2020

      Update
      Description
      Document
      Supported the 5-second granularity for monitoring data
      The monitoring feature of TencentDB for Redis has been updated, with the monitoring granularity being narrowed down from one minute to five seconds.

      July 2020

      Update
      Description
      Document
      Supported version upgrade
      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.
      Supported architecture upgrade
      TencentDB for Redis now supports quick upgrade from standard architecture to cluster architecture to help your business expand the performance and capacity with speed.

      June 2020

      Update
      Description
      Document
      Launched TencentDB for Redis Hybrid Storage Edition
      TencentDB for Redis Hybrid Storage Edition is launched. With 100% compatibility with Redis protocols, it 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.

      April 2020

      Update
      Description
      Document
      Supported Redis 5.0 in DTS
      You can now migrate data and upgrade instances to Redis 5.0 with DTS.

      March 2020

      Update
      Description
      Document
      Supported the service unavailable alarm feature
      TencentDB for 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.
      Supported adjusting bandwidth in the console
      You can now adjust instance network bandwidth on the instance details page in the Redis console. The bandwidth specifications for Cluster Edition have been fully upgraded, with shard specifications upgraded to 384 Mbps.
      -
      Updated the monitoring view for Redis 2.8
      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 TCOP, you need to change the view parameter from redisuuid to cluster in the code.
      -

      February 2020

      Update
      Description
      Document
      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.

      January 2020

      Update
      Description
      Document
      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.

      October 2019

      Update
      Description
      Document
      Supported access management
      You can now create policies through access management which grant sub-accounts permissions to use the resources they need.
      Supported account management in the console
      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.

      September 2019

      Update
      Description
      Document
      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.

      August 2019

      Update
      Description
      Document
      Supported password-free access
      To enable password-free access, submit a ticket. We recommend that you limit server access by using security groups after this feature is enabled.
      Supported disabling high-risk commands online
      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.
      Supported Cluster Edition in DTS
      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.

      July 2019

      Update
      Description
      Document
      Supported version upgrade with DTS
      TencentDB for Redis instance version can now be upgraded through DTS with hot migration, which guarantees instance service continuity during the upgrade process and can update incremental data in real time.
      Released Redis 4.0 Standard Edition
      Redis 4.0 Standard Edition supports 1-master 5-replica mode, read/write separation, scaling without disconnection, and ultra high availability.

      October 2018

      Update
      Description
      Document
      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 requests, scaling without storage capacity loss, and automatic read/write separation.
      
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