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Tair (Redis® OSS-Compatible):Redis Open-Source Edition: Minor version release notes

Last Updated:Jun 20, 2026

Alibaba Cloud releases new minor versions of Tair (Redis OSS-compatible) to add features and fix issues. This topic describes the release notes for minor versions of the Redis open-source edition. We recommend upgrading the minor version of your instances during off-peak hours.

Redis Open-Source Edition 7.0, 6.0, 5.0, and 4.0 are fully compatible with their corresponding major Redis versions and are backward compatible.

Important

These release notes cover only minor versions of Redis Open-Source Edition instances. For the release notes of Tair (Enterprise Edition) instances, including in-memory, persistent memory-optimized, and SSD-based types, see Tair minor version release notes.

Check or upgrade the minor version

Check the current minor version of an instance in the console. See Upgrade minor and proxy versions for the upgrade procedure and important notes.

Important
  • The system automatically detects the minor version of an instance. If the Minor Version Upgrade button is not displayed or is dimmed, the instance is on the latest minor version.

  • Minor version updates may vary by region. The version shown in the console is the definitive one.

Update levels

  • LOW: A general update level that includes routine upgrades, such as adding a new feature.

  • MEDIUM: A recommended update level that includes module optimizations, such as improving a feature. It also includes all updates from the LOW level.

  • HIGH: A major update level that includes important upgrades affecting stability or security, such as fixing a vulnerability or defect. It also includes all updates from the LOW and MEDIUM levels.

Note

The following tables list only release notes from January 1, 2025, onward. For release notes of earlier minor versions, see Historical versions.

Redis open source standard instances

Redis Community Edition7.0

Minor version

Severity level

Release date

Type

Description

7.0.2.12

MEDIUM

2026-05-11

Security hardening

Fixed security vulnerabilities CVE-2026-23631 and CVE-2026-25243.

Enhancement

Adds support for the config get cluster-require-full-coverage command.

7.0.2.9

MEDIUM

2026-01-14

Enhancement

  • Added support for seamless failover.

Bug fix

  • Fixed inaccurate statistics for high-traffic commands in Lua scripts.

7.0.2.7

MEDIUM

2026-01-14

Enhancement

  • Improved the primary/standby switchover process for the cluster architecture.

  • Added support for CONFIG-series commands.

7.0.2.6

HIGH

2025-11-24

Enhancement

  • Enhanced stability.

7.0.2.5

LOW

2025-10-31

Enhancement

  • The authentication system now supports the auth account:password format.

  • Added support for lightweight cluster messages to improve pub/sub performance in cluster mode.

  • Blocking commands now support redirection.

7.0.2.4

HIGH

2025-10-09

Enhancement

  • Improved master-replica redirection stability.

  • Improved cluster scaling stability.

Bug fix

  • Fixed security vulnerability CVE-2025-46817.

  • Fixed security vulnerability CVE-2025-46818.

  • Fixed security vulnerability CVE-2025-46819.

  • Fixed security vulnerability CVE-2025-49844.

7.0.1.19

LOW

2025-06-26

Enhancement

  • Enhanced stability.

7.0.1.18

HIGH

2025-06-23

Enhancement

  • Optimized the failover process.

Bug fix

  • Fixed security vulnerability CVE-2025-27151.

  • Fixed security vulnerability CVE-2025-32023.

  • Fixed security vulnerability CVE-2025-48367.

7.0.1.17

HIGH

2025-04-28

Enhancement

  • Added support for the -REDIRECT capability in standard architecture.

  • In Sentinel compatibility mode, added support for the SENTINEL masters command and its master, slaves, and replicas subcommands.

  • Added the cmd_slowlog_count statistic.

Bug fix

  • Fixed security vulnerability CVE-2025-21605.

  • Fixed security vulnerability CVE-2024-51741.

  • Fixed inaccurate QPS statistics for individual commands.

  • Fixed the incorrect source IP address recorded in the audit log for commands in Lua scripts.

7.0.1.16

MEDIUM

2025-01-16

Security hardening

  • Fixed security vulnerability CVE-2024-46981.

Open source Redis6.0

Version

Update level

Release date

Type

Description

6.0.2.28

MEDIUM

2026-05-11

security hardening

Fixed security vulnerabilities CVE-2026-23631 and CVE-2026-25243.

feature enhancement

Added support for the config get cluster-require-full-coverage command.

6.0.2.27

MEDIUM

2026-01-14

feature enhancement

  • Improved the primary/standby switchover process for the cluster architecture.

6.0.2.25

HIGH

2025-10-31

feature enhancement

  • The authentication system now supports the auth acc:pwd format.

  • Improved the traffic throttling algorithm.

  • Improved the AOF rewrite method.

6.0.2.24

HIGH

2025-10-09

bug fix

  • Fixed the security vulnerability CVE-2025-46817.

  • Fixed the security vulnerability CVE-2025-46818.

  • Fixed the security vulnerability CVE-2025-46819.

  • Fixed the security vulnerability CVE-2025-49844.

6.0.2.23

HIGH

2025-06-25

bug fix

  • Fixed the security vulnerability CVE-2025-32023.

  • Fixed the security vulnerability CVE-2025-48367.

6.0.2.22

MEDIUM

2025-06-05

feature enhancement

  • Improved the primary/standby switchover process.

bug fix

  • Fixed incorrect statistics for large keys after cluster scaling.

6.0.2.21

HIGH

2025-04-28

feature enhancement

  • Added support for running the READONLY and READWRITE commands when an instance is in the Loading state.

  • Added support for the SENTINEL masters command and its master, slaves, and replicas subcommands in Sentinel compatibility mode.

bug fix

  • Fixed data access exceptions during cluster instance scaling. This issue affected versions 0.2.16 to 0.2.18.

  • Fixed the security vulnerability CVE-2025-21605.

  • Fixed an issue where some error information was missing from Errorstats, primarily affecting -WRONGTYPE errors.

6.0.2.18

HIGH

2025-01-16

bug fix

  • Fixed an issue where the SRANDMEMBER command could cause an infinite loop.

  • Fixed the security vulnerability CVE-2024-46981.

  • Fixed inaccurate per-command QPS statistics.

Open-source Redis 5.0

Note

Open-source Redis 5.0 instances support two deployment modes: cloud native and classic. In the table below, minor versions for classic instances are shown in parentheses.

Minor version

Update level

Release date

Type

Description

5.5.2.28(5.2.28)

MEDIUM

2026-05-11

Security hardening

Fixed CVE-2026-23631 and CVE-2026-25243.

Feature enhancement

Added support for the config get cluster-require-full-coverage configuration option.

5.5.2.27(5.2.27)

MEDIUM

2026-01-14

Feature enhancement

  • Improved the primary/standby switchover process for the cluster architecture.

5.5.2.25(5.2.25)

HIGH

2025-10-31

Feature enhancement

  • The authentication system now supports the auth acc:pwd format.

  • Improved the traffic throttling algorithm.

  • Improved the AOF rewrite method.

5.5.2.24(5.2.24)

HIGH

2025-10-09

Bug fix

  • Fixed CVE-2025-46817.

  • Fixed CVE-2025-46818.

  • Fixed CVE-2025-46819.

  • Fixed CVE-2025-49844.

5.5.2.23(5.2.23)

HIGH

2025-06-25

Bug fix

  • Fixed CVE-2025-32023.

  • Fixed CVE-2025-48367.

5.5.2.22(5.2.22)

MEDIUM

2025-06-05

Feature enhancement

  • Improved the failover process.

Bug fix

  • Fixed incorrect large key statistics after a cluster scale-out.

5.5.2.21(5.2.21)

HIGH

2025-04-28

Feature enhancement

  • Added support for running the READONLY and READWRITE commands while an instance is in the Loading state.

  • Added support for the SENTINEL masters, master, slaves, and replicas commands in Sentinel compatibility mode.

Bug fix

  • Fixed data access exceptions that occurred during cluster instance scaling. This issue affected versions 5.2.17 to 5.2.18.

  • Fixed CVE-2025-21605.

  • Fixed missing error information in Errorstats, primarily affecting -WRONGTYPE errors.

5.5.2.18(5.2.18)

HIGH

2025-01-16

Bug fix

  • Fixed an infinite loop caused by the SRANDMEMBER command.

  • Fixed CVE-2024-46981.

  • Fixed inaccurate per-command QPS statistics.

Redis Open Source Edition 4.0

Minor version

Update level

Release date

Type

Description

1.9.20

HIGH

2025-10-31

enhancement

  • Improved the flow control algorithm.

1.9.19

HIGH

2025-10-09

bug fix

  • Fixed security vulnerability CVE-2025-46817.

  • Fixed security vulnerability CVE-2025-46818.

  • Fixed security vulnerability CVE-2025-46819.

  • Fixed security vulnerability CVE-2025-49844.

1.9.18

HIGH

2025-01-16

security hardening

  • Fixed security vulnerabilities CVE-2024-46981 and CVE-2024-31449.

Version history

This table lists the release notes for minor versions released before January 1, 2025.

Redis Open-Source Edition 7.0 release history

Version

Level

Date

Type

Description

7.0.1.15

LOW

2024-12-10

feature optimization

  • Added support for configuring more password-free commands in sentinel password-free mode by using the #no_loose_sentinel-password-free-commands parameter.

  • Improves the collection of cumulative traffic and command statistics for clients.

bug fix

  • Fixed an issue where the large key statistics threshold was not applied during the scaling of a cluster instance.

  • Improves the stability of cluster instance scaling.

7.0.1.13

HIGH

2024-10-08

security hardening

  • Fixed the CVE-2024-31228 security vulnerability.

  • Fixed the CVE-2024-31227 security vulnerability.

  • Fixed the CVE-2024-31449 security vulnerability.

  • Improves stability.

7.0.1.12

LOW

2024-08-12

feature optimization

  • Added support for the sentinel password-free mode.

7.0.1.10

LOW

2024-07-23

feature optimization

  • Added support for EventBus event logging.

7.0.1.9

LOW

2024-06-25

feature optimization

  • Improves the execution efficiency of Pub/Sub commands to prevent stalls when a large number of connections unsubscribe simultaneously.

  • Improves the client polling strategy to ensure timely memory statistics and reclamation for long-lived connections.

7.0.1.8

LOW

2024-05-28

feature optimization

  • Added monitoring for connections in the WATCH or BLOCK state.

  • Added monitoring metrics related to rehashing.

  • Upgrades the real-time hotkey statistics feature. You can now adjust the hotkey statistics threshold, display accurate QPS, and track up to 50 hotkeys simultaneously.

bug fix

  • Fixed an issue that caused incorrect QPS statistics due to the use of shared objects. Shared objects are no longer used when the real-time hotkey statistics feature is enabled.

7.0.1.7

LOW

2024-04-24

feature optimization

7.0.1.6

MEDIUM

2024-03-14

feature optimization

  • The INFO STATS command now returns statistics for disconnections caused by exceeding client input and output buffer limits:

    • client_query_buffer_limit_disconnections

    • client_output_buffer_limit_disconnections

  • Added a real-time threshold for large key statistics, which is 2,000 by default. For example, a string is considered a large key if its length exceeds 2,000 characters, and a list, set, or hash is considered a large key if it contains more than 2,000 elements.

bug fix

  • Fixed an issue that caused incorrect statistics for large keys of the Stream type.

7.0.1.5

LOW

2024-01-09

feature optimization

  • Improves the efficiency of active key expiration.

  • Added the pubsub_clients monitoring item to the output of the INFO CLIENTS command.

7.0.1.4

HIGH

2023-11-15

feature optimization

security hardening

  • Fixed the CVE-2023-41056 security vulnerability.

  • Fixed the CVE-2023-41053 security vulnerability.

7.0.1.3

LOW

2023-08-28

feature optimization

  • Improves the instance scaling process.

  • Added support for deploying cluster instances across multiple availability zones for disaster recovery.

7.0.1.2

HIGH

2023-08-01

new feature

  • Added support for Transport Layer Security (TLS) encryption for cluster instances in direct connection mode.

  • Added support for IP passthrough for cluster instances in proxy mode. You can control this feature by using the ptod_enabled parameter.

  • The SPUBLISH command now supports broadcasting messages within a shard of a cluster instance.

feature optimization

  • Upgraded to Redis community version 7.0.12. This upgrade includes multiple performance optimizations and security fixes, including for CVE-2022-24834 and CVE-2023-36824. For details, see the Redis 7.0.12 release note.

bug fix

  • Fixed an issue where the expiration of a hotkey could cause the instance to crash.

7.0.1.1

LOW

2023-07-17

feature optimization

  • Improves the master-replica switchover and restart processes for cluster instances.

7.0.1.0

LOW

2023-04-20

new feature

  • Added support for cluster and read/write splitting architectures.

  • Added support for seamless scaling of cluster instances.

  • hotkey information is now periodically recorded in Audit Logs for easier troubleshooting.

7.0.0.6

LOW

2023-01-31

new feature

  • Added support for Audit Logs.

  • Added support for Top Key Statistics.

  • Added support for Latency Insights.

7.0.0.5

LOW

2022-07-21

feature optimization

  • Upgraded to Redis community version 7.0.4.

7.0.0.4

LOW

2022-06-20

feature optimization

  • Upgraded to Redis community version 7.0.2.

7.0.0.3

LOW

2022-05-27

first release

  • Initial release of Redis Open-Source Edition 7.0 for Cloud Disk Edition instances. For details, see the Redis 7.0 release notes.

Open-source Redis 6.0 Release History

Minor version

Update level

Release date

Type

Description

6.0.2.17

LOW

2024-12-10

Feature optimization

  • Added the #no_loose_sentinel-password-free-commands parameter to configure additional password-free commands in Sentinel's password-free mode.

  • Optimized the cumulative traffic and command statistics for clients.

Fixed issue

  • Fixed an issue where the large key statistics threshold was ignored during cluster instance scaling.

  • Enhanced the stability of cluster instance scaling.

6.0.2.15

HIGH

2024-10-08

Security hardening

  • Fixed the CVE-2024-31228 security vulnerability.

  • Fixed the CVE-2024-31449 security vulnerability.

6.0.2.14

LOW

2024-08-12

Feature optimization

  • Added support for Sentinel password-free configuration.

6.0.2.12

LOW

2024-07-23

Feature optimization

  • Improved the whitelist check logic with both VPC password-free access and the#no_loose_check-whitelist-always parameter enabled.

  • Latency insights now supports pipeline monitoring.

Fixed issue

  • Fixed an issue that caused incorrect command execution time statistics within Lua scripts and MULTI blocks. This issue affected versions 6.0.2.8 to 6.0.2.11.

6.0.2.11

LOW

2024-06-25

Feature optimization

  • The execution efficiency of Pub/Sub commands is optimized to prevent stuttering that occurs when a large number of users unsubscribe from channels at the same time.

  • The client polling mechanism is optimized to prevent a failure to promptly collect memory statistics and reclaim unused memory for long-lived connections.

  • The method used by child processes to save Redis Database (RDB) files and append-only files (AOFs) to disks is optimized.

6.0.2.10

LOW

2024-05-28

Security hardening

  • Enhanced stability.

6.0.2.9

LOW

2024-05-28

Feature optimization

  • Added monitoring for connections in the WATCH or BLOCK state.

  • Added monitoring metrics related to rehashing.

  • Upgrades the real-time hotkey statistics feature. You can now adjust the hotkey statistics threshold, display accurate QPS, and track up to 50 hotkeys simultaneously.

Fixed issue

  • Fixed an issue that caused incorrect QPS statistics due to the use of shared objects. Shared objects are no longer used when the real-time hotkey statistics feature is enabled.

6.0.2.8

LOW

2024-04-24

Feature optimization

6.0.2.7

LOW

2024-03-14

Feature optimization

  • TheINFO STATS command now returns statistics for disconnections caused by exceeding client input and output buffer limits:

    • client_query_buffer_limit_disconnections

    • client_output_buffer_limit_disconnections

  • Added a real-time statistics threshold for large keys, with a default value of 2,000. For example, a string is considered a large key if its length exceeds 2,000 characters. A list, set, or hash is considered a large key if it contains more than 2,000 elements.

6.0.2.6

LOW

2024-01-09

Feature optimization

  • Improved the efficiency of active key expiration.

  • Added thepubsub_clients monitoring metric to the INFO CLIENTS command output.

  • Improved the execution efficiency of the CLUSTER NODES and CLUSTER SLOTS commands.

6.0.2.5

LOW

2023-08-28

Feature optimization

  • Added statistics for master-replica replication traffic, which are displayed separately in theINFO STATS output.

6.0.2.4

HIGH

2023-08-21

Feature optimization

  • Added support for TLS encryption for cluster architecture instances in direct connection mode.

Security hardening

  • Fixed the CVE-2022-24834 security vulnerability.

6.0.2.3

MEDIUM

2023-07-17

Security hardening

  • Improved the master-replica switchover and restart processes for cluster architecture instances.

6.0.2.1

MEDIUM

2023-06-30

Security hardening

  • Enhanced the stability of the cluster architecture.

6.0.2.0

HIGH

2023-04-24

Feature optimization

  • Hotkey information is now periodically recorded in audit logs for easier troubleshooting.

  • Theptod_enabled parameter now controls both performance monitoring and slow log query features.

Security hardening

  • Fixed several issues that occurred during the scaling of cluster architecture instances in extreme scenarios.

6.0.1.24

LOW

2022-11-14

Security hardening

  • Enhanced stability.

6.0.1.23

LOW

2022-09-20

Feature optimization

  • Audit logs now record key expiration and deletion events.

  • Non-write commands such as PING, AUTH, and SELECT are no longer recorded in audit logs.

6.0.1.22

LOW

2022-09-13

Feature optimization

  • Improved the way new connections are handled after the connection limit for a cluster architecture instance is reached.

6.0.1.21

LOW

2022-08-30

Feature optimization

  • Improved the startup process for cluster architecture instances.

6.0.1.20

LOW

2022-06-28

Feature optimization

  • Fixed an issue where commands such as ZUNIONSTORE and ZINTERSTORE returned an error for cluster instances in proxy mode.

6.0.1.19

LOW

2022-06-22

Feature optimization

  • Improved latency statistic histograms. For more information, see latency insights.

Security hardening

6.0.1.18

LOW

2022-05-17

Feature optimization

  • Removed the Errorstats - Selected field from the INFO command output.

6.0.1.17

LOW

2022-05-10

Feature optimization

  • Added support for the MOVE command for cluster architecture instances.

6.0.1.16

MEDIUM

2022-04-25

Security hardening

  • Improved the process of adding and removing nodes for cluster architecture instances to enhance stability.

6.0.1.15

LOW

2022-03-24

New feature

  • Added support for latency statistic histograms. For more information, see latency insights.

  • The INFO command now returns Errorstats.

6.0.1.14

LOW

2022-02-21

Feature optimization

6.0.1.13

LOW

2022-01-14

Feature optimization

  • Added a monitoring metric for memory occupied by DB metadata.

  • Improved the real-time hotkey statistics feature.

6.0.1.12

HIGH

2021-10-26

Security hardening

  • Fixed an issue that caused an excessive number of slow logs during cluster instance specification changes and enhanced stability.

6.0.1.11

HIGH

2021-10-13

Feature optimization

  • Enhanced the autonomy of seamless slot migration during cluster instance reconfiguration.

  • Improved the performance of commands such as CLUSTER NODES.

  • Improved the whitelist feature.

6.0.1.10

HIGH

2021-09-06

Feature optimization

  • Enhanced stability.

6.0.1.9

MEDIUM

2021-08-16

Feature optimization

  • Enhanced the reliability of seamless slot migration to improve stability.

6.0.1.8

MEDIUM

2021-08-06

Feature optimization

  • Enhanced stability.

6.0.1.7

MEDIUM

2021-08-06

Feature optimization

  • Enhanced stability.

6.0.1.6

MEDIUM

2021-07-19

New feature

Feature optimization

  • Improved the process of deleting data from the source slot after data migration to enhance data reliability.

  • Simplified the incremental data synchronization process for slot migration.

6.0.1.5

MEDIUM

2021-06-04

Feature optimization

  • Enhanced stability.

6.0.1.4

MEDIUM

2021-05-27

Feature optimization

  • Enhanced stability.

6.0.1.3

LOW

2021-05-18

New feature

  • Added support for real-time statistics for large keys.

6.0.1.2

MEDIUM

2021-05-07

Feature optimization

  • Enhanced stability.

6.0.1.1

MEDIUM

2020-11-28

New feature

  • Incorporated updates from Redis community version 6.0.9. For more information, see the Redis 6.0 release notes.

  • Added support for seamless slot migration.

  • Added support for obtaining a VIP over the internet to better support clients that use the direct connection mode.

Feature optimization

  • Improved instance health checks to accelerate master-replica switchover during disk jitter.

6.0.0.5

HIGH

2020-08-21

Fixed issue

  • Fixed an issue that caused inaccurate hotkey statistics.

6.0.0.4

HIGH

2020-07-20

Fixed issue

  • Fixed an issue where the configurations of some parameters became invalid after a restart.

  • Fixed an issue where replica nodes were incorrectly flagged in slow logs.

6.0.0.3

LOW

2020-06-11

New feature

  • Incorporated updates from Redis community version 6.0.5. For more information, see the Redis 6.0 release notes.

  • In the output of theINFO command, theReplication section now includes role information, such as role:master, for compatibility with certain Redisson clients.

  • Added support for QPS statistics for read and write commands. For more information, see View performance monitoring data.

6.0.0.2

LOW

2020-06-02

New feature

6.0.0.1

LOW

2020-05-06

First release

  • This is the first minor version. It is based on Redis community version 6.0.1. For more information, see the Redis 6.0 release notes.

Open-source Redis 5.0 release history

Version

Level

Release date

Type

Description

5.5.2.17(5.2.17)

LOW

2024-12-10

feature optimization

  • Optimized the reporting of cumulative traffic and command statistics for clients.

bug fix

  • Fixed a bug that caused the big key statistics threshold to become ineffective during cluster instance scaling.

  • Improved the stability of cluster instance scaling.

5.5.2.15(5.2.15)

HIGH

2024-10-08

security hardening

  • Fixed the security vulnerability CVE-2024-31228.

  • Fixed the security vulnerability CVE-2024-31449.

5.5.2.13(5.2.13)

LOW

2024-08-21

feature optimization

  • Added compatibility for incorrect password authentication when VPC password-free access is enabled.

5.5.2.12(5.2.12)

LOW

2024-07-23

feature optimization

  • Optimized the whitelist check logic when both VPC password-free access and the #no_loose_check-whitelist-always parameter are enabled.

  • Latency insights now supports pipeline monitoring.

  • Ensured compatibility with Redis community version 5.0.14.

bug fix

  • Fixed a bug that caused incorrect execution time statistics for commands within Lua and MULTI. This bug affected versions 5.2.8 to 5.2.11.

5.5.2.11(5.2.11)

LOW

2024-06-25

feature optimization

  • The execution efficiency of Pub/Sub commands is optimized to prevent stuttering that occurs when a large number of users unsubscribe from channels at the same time.

  • The client polling mechanism is optimized to prevent a failure to promptly collect memory statistics and reclaim unused memory for long-lived connections.

  • The method used by child processes to save Redis Database (RDB) files and append-only files (AOFs) to disks is optimized.

5.5.2.10(5.2.10)

LOW

2024-05-28

security hardening

  • Improved stability.

5.5.2.9(5.2.9)

LOW

2024-05-28

feature optimization

  • Added monitoring for connections in the WATCH or BLOCK state.

  • Added monitoring metrics related to rehashing.

  • Upgrades the real-time hotkey statistics feature. You can now adjust the hotkey statistics threshold, display accurate QPS, and track up to 50 hotkeys simultaneously.

bug fix

  • Fixed an issue that caused incorrect QPS statistics due to the use of shared objects. Shared objects are no longer used when the real-time hotkey statistics feature is enabled.

5.5.2.8(5.2.8)

LOW

2024-04-24

security hardening

  • Improved stability.

5.5.2.7(5.2.7)

LOW

2024-03-14

feature optimization

  • The INFO STATS command now returns statistics for disconnections caused by exceeding client input and output buffer limits:

    • client_query_buffer_limit_disconnections

    • client_output_buffer_limit_disconnections

  • Added a default real-time threshold of 2,000 for big key statistics. For example, a string is considered a big key if its length exceeds 2,000 characters, and a list, set, or hash is considered a big key if it contains more than 2,000 elements.

5.5.2.6(5.2.6)

LOW

2024-01-09

feature optimization

  • Improved the efficiency of active key expiration.

  • Added the pubsub_clients monitoring item to the output of the INFO CLIENTS command.

  • Improved the execution efficiency of the CLUSTER NODES and CLUSTER SLOTS commands.

5.0.5.20(0.5.20)

HIGH

2025-01-16

security hardening

  • Fixed the security vulnerability CVE-2024-46981.

5.2.5

LOW

2023-08-28

feature optimization

  • Added statistics for master-replica replication traffic, which are displayed separately in the output of the INFO STATS command.

5.2.4

HIGH

2023-08-21

feature optimization

  • Added support for TLS encryption for cluster instances in direct connection mode.

security hardening

  • Fixed the security vulnerability CVE-2022-24834.

5.2.2

MEDIUM

2023-07-17

security hardening

  • Improved the master-replica switchover and restart processes for cluster instances.

5.2.1

MEDIUM

2023-06-30

security hardening

  • Enhanced the stability of the cluster architecture.

5.2.0

HIGH

2023-04-24

feature optimization

  • Hotkey information is now periodically recorded in audit logs to simplify troubleshooting.

  • The ptod_enabled parameter now also controls the performance monitoring and slow log query features.

security hardening

  • Fixed several issues that occurred during the scaling of cluster instances in extreme scenarios.

5.1.13

LOW

2022-11-14

security hardening

  • Improved stability.

5.1.12

LOW

2022-09-20

feature optimization

  • Audit logs now record key expiration and deletion events.

  • Non-write commands such as PING, AUTH, and SELECT are no longer recorded in audit logs.

5.1.11

LOW

2022-09-06

feature optimization

  • Improved handling of new connections when the maximum connection limit for a cluster instance is reached.

5.1.10

LOW

2022-08-23

feature optimization

  • Improved the startup process for cluster instances.

  • Improved latency statistic histograms.

5.1.9

LOW

2022-06-22

feature optimization

security hardening

5.1.8

LOW

2022-05-17

feature optimization

  • Removed the Errorstats - Selected field from the output of the INFO command.

5.1.7

LOW

2022-05-06

feature optimization

  • Added support for the MOVE command for cluster instances.

5.1.6

MEDIUM

2022-04-25

feature optimization

  • Improved the process of adding and removing nodes for cluster instances to enhance stability.

5.1.5

LOW

2022-04-13

feature optimization

  • Improved stability.

5.1.4

LOW

2022-03-24

new feature

  • Added support for latency statistic histograms. For more information, see Latency insights.

  • The INFO command now returns Errorstats (Redis error statistics).

5.1.3

LOW

2022-02-21

feature optimization

5.1.1

LOW

2022-01-04

feature optimization

  • Added a monitoring metric for memory occupied by DB metadata.

5.0.9

LOW

2021-12-22

feature optimization

  • Improved the real-time top key statistics feature.

5.0.8

LOW

2021-11-15

feature optimization

  • Added support for seamless scaling of cluster instances.

  • Account names are now case-sensitive.

0.5.19

HIGH

2023-08-15

security hardening

  • Fixed the security vulnerability CVE-2022-24834.

0.5.18

LOW

2022-08-23

feature optimization

  • Improved the startup process for cluster instances.

0.5.17

HIGH

2022-06-07

security hardening

  • Improved stability.

0.5.16

HIGH

2022-05-23

security hardening

  • Improved the stability of configuration changes for cluster instances with direct connection mode enabled.

0.5.15

HIGH

2022-04-25

security hardening

  • Fixed a potential failure in big key migration during configuration changes for a cluster instance with direct connection mode enabled.

0.5.14

LOW

2022-01-04

feature optimization

  • Added a monitoring metric for memory occupied by DB metadata.

0.5.12

LOW

2021-11-29

feature optimization

  • Fixed an issue where a cluster instance could fail to restart in specific scenarios.

0.5.11

LOW

2021-11-24

feature optimization

  • Fixed an issue where the real-time key analysis feature missed statistics for the SPOP command.

0.5.10

HIGH

2021-10-26

security hardening

  • Fixed an issue that caused an excessive number of slow logs during cluster configuration changes and enhanced stability.

0.5.9

HIGH

2021-10-15

security hardening

  • Improved stability.

0.5.8

MEDIUM

2021-10-13

feature optimization

  • Enhanced the autonomous capability for seamless slot migration during cluster configuration changes.

0.5.7

LOW

2021-08-26

new feature

  • Added support for more detailed QPS (Queries Per Second) statistics, which now include read, write, and other categories.

0.5.6

HIGH

2021-08-16

bug fix

  • Enhanced the reliability of seamless slot migration to improve stability.

0.5.5

HIGH

2021-08-05

bug fix

  • Fixed a potential failure in configuration changes for cluster instances with direct connection enabled.

0.5.4

MEDIUM

2021-07-27

feature optimization

  • Improved stability.

0.5.3

MEDIUM

2021-07-21

feature optimization

  • Improved the process of deleting source data after data migration is complete to enhance data reliability.

  • Simplified the incremental data synchronization process for data migration.

0.5.2

HIGH

2021-04-26

security hardening

  • Fixed security vulnerabilities in the community LuaJIT.

new feature

  • Improved slot migration to support seamless scaling for cloud disk instances.

  • Added support for real-time statistics for big keys.

  • Added support for obtaining a virtual IP (VIP) address over the internet to provide better support for users using direct connection addresses.

0.5.0

MEDIUM

2021-03-25

new feature

  • Added support for seamless slot migration.

feature optimization

  • Improved stability when processing a large number of asynchronous client requests.

0.4.0

MEDIUM

2021-03-09

new feature

  • Added support for real-time statistics for big keys.

  • Added support for the CONFIG RESETSTAT command.

  • The illegal address error message now includes the client's IP address, which helps you configure the IP address whitelist for your Redis instance.

    Figure 1. IP address hint

    r-bp xxx .redis.rds.aliyuncs.com:6379> auth
    (error) ERR illegal address: 172.16.xxx:39136

feature optimization

  • Improved instance health check capabilities to accelerate the master-replica switchover in scenarios with disk jitter.

0.3.10

HIGH

2020-09-25

bug fix

  • Fixed an issue where the output of the CLUSTER NODES command was inconsistent with the open source protocol. Slots are now separated by spaces to prevent client parsing errors.

0.3.9

LOW

2020-07-20

new feature

  • Added support for ECS security groups, allowing you to authorize access by binding an ECS security group to a Redis instance. This feature simplifies O&M by eliminating the need to manually enter ECS instance IP addresses. For more information, see Configure a whitelist by using an ECS security group.

0.3.8

HIGH

2020-07-14

feature optimization

  • Added support for the CLIENT UNBLOCK subcommand.

bug fix

  • Fixed an issue where the expiration time was parsed incorrectly during slot migration.

  • Corrected the latency flag in audit logs to prevent confusion between master and replica audit logs.

0.3.7

HIGH

2020-06-17

bug fix

  • Fixed an issue where an unreachable IP address was returned in direct connection mode.

0.3.6

LOW

2020-06-09

new feature

  • In the output of the INFO command, the Replication section now includes role information (for example, role:master) to ensure compatibility with Redisson clients that use this information.

0.3.5

LOW

2020-06-05

new feature

0.3.4

HIGH

2020-04-08

bug fix

  • Fixed a crash that could occur when a hotkey was evicted.

  • Fixed a crash caused by a use-after-free (UAF) vulnerability when audit logs were disabled.

0.3.1

HIGH

2020-02-20

new feature

  • Added support for the audit log feature, which allows you to query, analyze, and export logs. For more information, see Audit logs.

  • Added support for direct connection mode, which allows clients to bypass proxies and connect directly, similar to a native Redis cluster. This mode reduces link overhead and improves response speed. For more information, see Enable direct connection.

  • Added support for applying for public endpoints when using VPC password-free access.

  • Added a new scenario for the INFO command's oom_err_count statistic: it is now incremented when the amount of data exceeds the configured maxmemory value.

bug fix

  • Fixed a crash that occurred when the RPOPLPUSH command was executed with the same source and destination keys, triggering the expiration mechanism.

  • Fixed an authentication error in VPC password-free access mode.

0.2.0

LOW

2020-01-17

new feature

  • Added support for real-time hotkey statistics to help you quickly identify hotkeys in your instance. For more information, see Top key statistics.

0.1.2

LOW

2019-11-26

new feature

  • Added support for executing read-only Lua scripts on read-only nodes of read/write splitting instances.

Earlier than 0.1.2

N/A

N/A

N/A

  • Earlier minor versions of Redis 5.0. We recommend upgrading to the latest version.

Redis Open-Source Edition 4.0 release history

Minor version

Update level

Release date

Type

Description

1.9.17

LOW

2023-11-25

Security hardening

  • Enhanced stability.

1.9.16

LOW

2023-08-15

Security hardening

  • Enhanced stability.

1.9.15

LOW

2023-05-17

Feature optimization

  • For a cluster instance, you can now view the number of connections between proxy nodes and data nodes in the CloudMonitor console.

1.9.14

LOW

2022-11-14

Feature optimization

  • Improved statistics collection.

1.9.13

LOW

2022-08-23

Feature optimization

  • Improved the startup process for cluster instances.

1.9.12

HIGH

2022-06-07

Security hardening

  • Enhanced stability.

1.9.10

HIGH

2022-05-23

Security hardening

  • Improved configuration change stability for cluster instances using direct connection mode.

1.9.9

HIGH

2022-04-25

Security hardening

  • Enhanced stability.

1.9.8

HIGH

2022-04-25

Bug fix

  • Fixed an issue where large key migration could fail during a configuration change on a cluster instance using direct connection mode.

1.9.6

HIGH

2021-10-15

Security hardening

  • Enhanced stability.

1.9.5

LOW

2021-09-13

New feature

  • QPS (Queries Per Second) statistics are now categorized as read, write, or other.

1.9.4

HIGH

2021-08-05

Bug fix

  • Fixed an issue where a configuration change could fail for a cluster instance using direct connection mode.

1.9.3

MEDIUM

2021-07-20

Feature update

  • Enhanced stability.

1.9.2

HIGH

2021-04-19

Security hardening

  • Addressed security vulnerabilities in the community LuaJIT compiler.

New feature

  • Added support for obtaining a public virtual IP (VIP), improving support for users in direct connection mode.

1.9.1

MEDIUM

2021-03-08

Feature optimization

  • Improved instance health checks to accelerate master-replica switchovers during periods of disk jitter.

  • Improved the performance of the BGSAVE and REWRITE commands on large-memory instances by using fork, preventing potential long pauses.

1.9.0

LOW

2021-02-22

New feature

  • The illegal address error message now includes the client's IP address, helping you configure the correct IP address whitelist.

1.8.8

HIGH

2020-09-25

Bug fix

  • Fixed the CLUSTER NODES command output to separate slots with spaces. This resolves an inconsistency with the standard Redis protocol and prevents client parsing errors.

1.8.7

LOW

2020-07-20

New feature

  • Added support for binding ECS security groups to Redis instances for access authorization. This simplifies management by removing the need to manually update IP address whitelists. For more information, see Configure a whitelist by using an ECS security group.

1.8.6

HIGH

2020-07-14

Bug fix

  • Fixed an incorrect latency flag in audit logs that caused confusion between master and replica logs.

1.8.5

LOW

2020-06-09

New feature

  • The INFO command's Replication section now includes the instance role (e.g., role:master) to ensure compatibility with Redisson clients.

1.8.4

LOW

2020-06-05

New feature

1.8.3

HIGH

2020-04-08

Bug fix

  • Fixed a crash that could occur when a hot key was evicted.

  • Fixed a crash caused by a Use-After-Free (UAF) vulnerability when the audit log feature was disabled.

1.8.1

LOW

2020-02-20

New feature

  • You can now create a public endpoint even when password-free access over a Virtual Private Cloud (VPC) is enabled.

1.8.0

HIGH

2020-01-16

New feature

  • Added real-time statistics to help identify hot keys on your instance. For more information, see Top key statistics.

Bug fix

  • Fixed an issue where the INFO command output was missing the cluster_enabled flag in direct connection mode. This flag is required by some SDKs to correctly enter cluster mode.

1.7.1

MEDIUM

2019-11-20

New feature

  • Added support for running read-only Lua scripts on read replicas of read/write splitting instances.

  • Added support for direct connection mode. Clients can bypass proxies and use direct connection addresses to connect to Redis cluster instances, similar to connecting to a native Redis cluster. This mode reduces link overhead and improves service response speed. For more information, see Enable direct connection mode.

  • In the output of the INFO command, the Memory section now includes memory usage statistics for Lua scripts.

Feature optimization

  • Reduced the memory usage of audit logs.

1.5.8

HIGH

2019-09-23

Bug fix

  • Fixed a bug that broke the atomicity of the SETEX command during two-way synchronization on legacy Global Distributed Cache links.

1.5.6

HIGH

2019-08-28

New feature

  • Audit logs can now record latency events.

Bug fix

  • Fixed an issue where slow requests caused by commands such as KEYS, FLUSHALL, and FLUSHDB from clients could trigger a master-replica switchover.

1.5.4

LOW

2019-07-08

New feature

  • Added support for the audit log feature, which allows you to query, analyze, and export logs. For more information, see Audit logs.

  • Added support for recording the latency of the entire event loop, providing insight into the engine's status.

1.5.2

HIGH

2019-07-04

Bug fix

  • Fixed a crash that occurred when an RPOPLPUSH command with the same source and destination triggered the key expiration mechanism.

1.4.0

HIGH

2019-05-15

Bug fix

  • Fixed an issue where loading an RDB or AOF file after a restart could trigger a master-replica switchover.

Before 1.4.0

N/A

N/A

N/A

  • These are earlier minor versions. We recommend upgrading your instances to the latest minor version.

Related documents