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    Tair (Redis® OSS-Compatible):Release notes for minor versions of Redis Open-Source Edition

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    Tair (Redis® OSS-Compatible):Release notes for minor versions of Redis Open-Source Edition

    Last Updated:Mar 04, 2026

    Alibaba Cloud periodically releases new minor versions of Tair (Redis OSS-compatible) to add features, fix known issues, and improve user experience. This topic describes the release notes for minor versions of Redis Open-Source Edition. We recommend that you update 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 the corresponding major versions of open source Redis and maintain backward compatibility with earlier versions.

    Important

    This topic covers only the release notes for minor versions of Redis Open-Source Edition instances. For the release notes for minor versions of Tair (Enterprise Edition) instances, such as DRAM-based, persistent memory-optimized, and ESSD/SSD-based instances, see Tair minor version release notes.

    View or update the minor version of an instance

    You can view the current minor version of an instance in the console. For more information about the update operations and usage notes, see Upgrade minor and proxy versions.

    Important

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

    • Minor version updates may vary by region. The minor version displayed for an instance in the console is the one that is in effect.

    Update levels

    • LOW: regular updates. LOW-level updates include routine feature updates, such as adding a feature.

    • MEDIUM: recommended updates. MEDIUM-level updates include optimizations for features and modules. LOW-level updates are also included in MEDIUM-level updates.

    • HIGH: major updates. HIGH-level updates include major updates to ensure stability or security, such as fixing a vulnerability or defect. LOW-level and MEDIUM-level updates are also included in HIGH-level updates.

    Note

    The following tables list only the release notes after January 1, 2025. For the release notes of minor versions prior to this date, see the release notes for historical versions.

    Redis Open-Source Edition standard instances

    Redis Open-Source Edition V7.0

    Minor version

    Update level

    Release date

    Category

    Description

    7.0.2.9

    MEDIUM

    2026-01-14

    Feature optimization

    • Supports imperceptible master-replica switchover.

    Fixed issue

    • The QPS statistics of high-traffic commands inside Lua scripts are fixed.

    7.0.2.7

    MEDIUM

    2026-01-14

    Feature optimization

    • The master-replica switchover process for cluster instances is optimized.

    • SUPPORT FOR CONFIG COMMANDS IS ADDED.

    7.0.2.6

    HIGH

    2025-11-24

    Feature optimization

    • Stability is enhanced.

    7.0.2.5

    LOW

    2025-10-31

    Feature optimization

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

    • Lightweight cluster messaging is supported to improve Pub/Sub performance in cluster mode.

    • Block commands support redirection.

    7.0.2.4

    HIGH

    2025-10-09

    Feature optimization

    • The stability of master-replica redirection is enhanced.

    • The stability of cluster scaling is enhanced.

    Fixed issue

    • The CVE-2025-46817 security vulnerability is fixed.

    • The CVE-2025-46818 security vulnerability is fixed.

    • The CVE-2025-46819 security vulnerability is fixed.

    • The CVE-2025-49844 security vulnerability is fixed.

    7.0.1.19

    LOW

    2025-06-26

    Feature optimization

    • Stability is enhanced.

    7.0.1.18

    HIGH

    2025-06-23

    Feature optimization

    • The master-replica switchover process is optimized.

    Fixed issue

    • The CVE-2025-27151 security vulnerability is fixed.

    • The CVE-2025-32023 security vulnerability is fixed.

    • The CVE-2025-48367 security vulnerability is fixed.

    7.0.1.17

    HIGH

    2025-04-28

    Feature optimization

    • The REDIRECT command is supported in the standard architecture.

    • In Sentinel-compatible mode, the SENTINEL masters, SENTINEL master, SENTINEL slaves, and SENTINEL replicas commands are supported.

    • The cmd_slowlog_count statistical item is added.

    Fixed issue

    • The CVE-2025-21605 security vulnerability is fixed.

    • The CVE-2024-51741 security vulnerability is fixed.

    • The following issue is fixed: The QPS statistics of a single command are inaccurate.

    • The following issue is fixed: In the audit logs, the source IP addresses of commands executed inside Lua scripts are incorrect.

    7.0.1.16

    MEDIUM

    2025-01-16

    Security hardening

    • The CVE-2024-46981 security vulnerability is fixed.

    Redis Open-Source Edition V6.0

    Minor version

    Update level

    Release date

    Category

    Description

    6.0.2.27

    MEDIUM

    2026-01-14

    Feature optimization

    • The master-replica switchover process for cluster instances is optimized.

    6.0.2.25

    HIGH

    2025-10-31

    Feature optimization

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

    • The throttling algorithm is optimized.

    • The AOF rewrite method is optimized.

    6.0.2.24

    HIGH

    2025-10-09

    Fixed issue

    • The CVE-2025-46817 security vulnerability is fixed.

    • The CVE-2025-46818 security vulnerability is fixed.

    • The CVE-2025-46819 security vulnerability is fixed.

    • The CVE-2025-49844 security vulnerability is fixed.

    6.0.2.23

    HIGH

    2025-06-25

    Fixed issue

    • The CVE-2025-32023 security vulnerability is fixed.

    • The CVE-2025-48367 security vulnerability is fixed.

    6.0.2.22

    MEDIUM

    2025-06-05

    Feature optimization

    • The master-replica switchover process is optimized.

    Fixed issue

    • The issue of incorrect statistics for large keys after cluster expansion is fixed.

    6.0.2.21

    HIGH

    2025-04-28

    Feature optimization

    • The READONLY and READWRITE commands can be executed while the instance is being loaded.

    • In Sentinel-compatible mode, the SENTINEL masters, SENTINEL master, SENTINEL slaves, and SENTINEL replicas commands are supported.

    Fixed issue

    • Data access exceptions during cluster instance scaling are fixed. This issue affected versions 0.2.16 through 0.2.18.

    • The CVE-2025-21605 security vulnerability is fixed.

    • The issue of missing error messages in Errorstats, primarily related to -WRONGTYPE errors, is fixed.

    6.0.2.18

    HIGH

    2025-01-16

    Fixed issue

    • The SRANDMEMBER command no longer causes infinite loops in instances.

    • The CVE-2024-46981 security vulnerability is fixed.

    • The following issue is fixed: The QPS statistics of a single command are inaccurate.

    Redis Open-Source Edition V5.0

    Note

    Redis Open-Source Edition 5.0 instances support both cloud-native and classic deployment modes. The minor version numbers in parentheses in the table below apply to classic instances.

    Minor version

    Update level

    Release date

    Category

    Description

    5.5.2.27(5.2.27)

    MEDIUM

    2026-01-14

    Feature optimization

    • The master-replica switchover process for cluster instances is optimized.

    5.5.2.25(5.2.25)

    HIGH

    2025-10-31

    Feature optimization

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

    • The throttling algorithm is optimized.

    • The AOF rewrite method is optimized.

    5.5.2.24(5.2.24)

    HIGH

    2025-10-09

    Fixed issue

    • The CVE-2025-46817 security vulnerability is fixed.

    • The CVE-2025-46818 security vulnerability is fixed.

    • The CVE-2025-46819 security vulnerability is fixed.

    • The CVE-2025-49844 security vulnerability is fixed.

    5.5.2.23(5.2.23)

    HIGH

    2025-06-25

    Fixed issue

    • The CVE-2025-32023 security vulnerability is fixed.

    • The CVE-2025-48367 security vulnerability is fixed.

    5.5.2.22(5.2.22)

    MEDIUM

    2025-06-05

    Feature optimization

    • The master-replica switchover process is optimized.

    Fixed issue

    • The issue of incorrect statistics for large keys after cluster expansion is fixed.

    5.5.2.21(5.2.21)

    HIGH

    2025-04-28

    Feature optimization

    • The READONLY and READWRITE commands can be executed while the instance is being loaded.

    • In Sentinel-compatible mode, the SENTINEL masters, SENTINEL master, SENTINEL slaves, and SENTINEL replicas commands are supported.

    Fixed issue

    • Data access exceptions during cluster instance scaling are fixed. This issue affected versions 5.2.17 through 5.2.18.

    • The CVE-2025-21605 security vulnerability is fixed.

    • The issue of missing error messages in Errorstats, primarily related to -WRONGTYPE errors, is fixed.

    5.5.2.18(5.2.18)

    HIGH

    2025-01-16

    Fixed issue

    • The SRANDMEMBER command no longer causes infinite loops in instances.

    • The CVE-2024-46981 security vulnerability is fixed.

    • The following issue is fixed: The QPS statistics of a single command are inaccurate.

    Redis Open-Source Edition V4.0

    Minor version

    Update level

    Release date

    Category

    Description

    1.9.20

    HIGH

    2025-10-31

    Feature optimization

    • The throttling algorithm is optimized.

    1.9.19

    HIGH

    2025-10-09

    Fixed issue

    • The CVE-2025-46817 security vulnerability is fixed.

    • The CVE-2025-46818 security vulnerability is fixed.

    • The CVE-2025-46819 security vulnerability is fixed.

    • The CVE-2025-49844 security vulnerability is fixed.

    1.9.18

    HIGH

    2025-01-16

    Security hardening

    • The CVE-2024-46981 and CVE-2024-31449 security vulnerabilities are fixed.

    Historical versions

    The following tables provide historical release notes for minor versions prior to January 1, 2025.

    Redis Open-Source Edition Historical release notes for V7.0

    Minor version

    Update level

    Release date

    Category

    Description

    7.0.1.15

    LOW

    2024-12-10

    Feature optimization

    • In Sentinel-compatible mode, the #no_loose_sentinel-password-free-commands parameter can be used to configure password-free access to more commands.

    • The capability to track the cumulative traffic generated by clients and the statistics related to commands is optimized.

    Fixed issue

    • The following issue is fixed: The threshold for detecting large keys becomes invalid when a cluster instance is scaled.

    • The stability of cluster instance scaling is enhanced.

    7.0.1.13

    HIGH

    2024-10-08

    Security hardening

    • The CVE-2024-31228 security vulnerability is fixed.

    • The CVE-2024-31227 security vulnerability is fixed.

    • The CVE-2024-31449 security vulnerability is fixed.

    • Stability is enhanced.

    7.0.1.12

    LOW

    2024-08-12

    Feature optimization

    • Password-free execution of Sentinel commands is supported.

    7.0.1.10

    LOW

    2024-07-23

    Feature optimization

    • EventBus event logging is supported.

    7.0.1.9

    LOW

    2024-06-25

    Feature optimization

    • The execution efficiency of Pub/Sub commands is optimized to prevent stuttering that occurs when many 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 persistent connections.

    7.0.1.8

    LOW

    2024-05-28

    Feature optimization

    • Monitoring of watched or blocked connections is enhanced.

    • Rehashing-related metrics are added.

    • The real-time hotkey statistics feature is upgraded to allow adjustment of the hotkey detection threshold and display exact QPS. Up to 50 hotkeys can be tracked simultaneously.

    Fixed issue

    • The following issue is fixed: Collected QPS statistics are incorrect due to the use of shared objects. Shared objects are no longer used after the real-time hotkey statistics feature is enabled.

    7.0.1.7

    LOW

    2024-04-24

    Feature optimization

    • New features and enhancements of open source Redis 7.0.15 are supported. For more information, see Redis 7.0.15 release note.

    7.0.1.6

    MEDIUM

    2024-03-14

    Feature optimization

    • The INFO STATS command is optimized to include statistics about disconnections caused by exceeding client buffer limits:

      • client_query_buffer_limit_disconnections

      • client_output_buffer_limit_disconnections

    • The threshold for real-time collection of statistics about large keys is added. The default value is 2000. For example, if a key of the String type is 2,000 characters in length, the key is considered a large key. If the number of elements in a key of the List, Set, or Hash type exceeds 2,000, the key is considered a large key.

    Fixed issue

    • The issue that statistics about large keys of the Stream type are inaccurate is fixed.

    7.0.1.5

    LOW

    2024-01-09

    Feature optimization

    • The efficiency of active expiration is optimized.

    • The pubsub_clients metric is added to the INFO CLIENTS command.

    7.0.1.4

    HIGH

    2023-11-15

    Feature optimization

    Security hardening

    • The CVE-2023-41056 security vulnerability is fixed.

    • The CVE-2023-41053 security vulnerability is fixed.

    7.0.1.3

    LOW

    2023-08-28

    Feature optimization

    • The process of scaling instances is optimized.

    • Cluster instances can be deployed across multiple zones to implement disaster recovery.

    7.0.1.2

    HIGH

    2023-08-01

    New feature

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

    • The IP passthrough feature is supported for cluster instances in proxy mode. You can use the ptod_enabled parameter to control this feature.

    • The SPUBLISH command can be used to broadcast messages within a shard of a cluster instance.

    Feature optimization

    • New features and enhancements of open source Redis 7.0.12 are supported, including multiple performance optimizations and security vulnerability fixes. For example, the CVE-2022-24834 and CVE-2023-36824 security vulnerabilities are fixed. For more information, see Redis 7.0.12 release note.

    7.0.1.1

    LOW

    2023-07-17

    Feature optimization

    • The master-replica switchover and restart processes for cluster instances are optimized.

    7.0.1.0

    LOW

    2023-04-20

    New feature

    • Cluster and read/write splitting instances are available for purchase.

    • A cluster instance can be scaled without affecting the instance.

    • Statistics about hotkeys are regularly recorded in audit logs for troubleshooting.

    7.0.0.6

    LOW

    2023-01-31

    New feature

    • The Audit Logs feature is supported.

    • The Top Key Statistics feature is supported.

    • The Latency Insights feature is supported.

    7.0.0.5

    LOW

    2022-07-21

    Feature optimization

    • The Redis version has been updated to open source community version 7.0.4.

    7.0.0.4

    LOW

    2022-06-20

    Feature optimization

    • Updated to Redis 7.0.2, the open source community version.

    7.0.0.3

    LOW

    2022-05-27

    First release

    • Redis Open-Source Edition 7.0 instances that use cloud disks are available. For more information, see Redis 7.0 release notes.

    Redis Open-Source Edition Historical release notes for V6.0

    Minor version

    Update level

    Release date

    Category

    Description

    6.0.2.17

    LOW

    2024-12-10

    Feature optimization

    • In Sentinel-compatible mode, the #no_loose_sentinel-password-free-commands parameter can be used to configure password-free access to more commands.

    • The capability to track the cumulative traffic generated by clients and the statistics related to commands is optimized.

    Fixed issue

    • The following issue is fixed: The threshold for detecting large keys becomes invalid when a cluster instance is scaled.

    • The stability of cluster instance scaling is enhanced.

    6.0.2.15

    HIGH

    2024-10-08

    Security hardening

    • The CVE-2024-31228 security vulnerability is fixed.

    • The CVE-2024-31449 security vulnerability is fixed.

    6.0.2.14

    LOW

    2024-08-12

    Feature optimization

    • Supports passwordless configuration for Sentinel.

    6.0.2.12

    LOW

    2024-07-23

    Feature optimization

    • The whitelist verification logic is optimized when both password-free access over VPC and the #no_loose_check-whitelist-always parameter are enabled.

    • Pipelines can be monitored using the latency insights feature.

    Fixed issue

    • The following issue is fixed: The time required to run commands within Lua scripts and Redis MULTI transactions is incorrectly calculated. The affected versions are 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

    • Stability is enhanced.

    6.0.2.9

    LOW

    2024-05-28

    Feature optimization

    • Monitoring of watched or blocked connections is enhanced.

    • Rehashing-related metrics are added.

    • The real-time hotkey statistics feature is upgraded to allow adjustment of the hotkey detection threshold and display exact QPS. Up to 50 hotkeys can be tracked simultaneously.

    Fixed issue

    • The following issue is fixed: Collected QPS statistics are incorrect due to the use of shared objects. Shared objects are no longer used after 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

    • The INFO STATS command is optimized to include statistics about disconnections caused by exceeding client buffer limits:

      • client_query_buffer_limit_disconnections

      • client_output_buffer_limit_disconnections

    • The threshold for real-time collection of statistics about large keys is added. The default value is 2000. For example, if a key of the String type is 2,000 characters in length, the key is considered a large key. If the number of elements in a key of the List, Set, or Hash type exceeds 2,000, the key is considered a large key.

    6.0.2.6

    LOW

    2024-01-09

    Feature optimization

    • The efficiency of active expiration is optimized.

    • The pubsub_clients metric is added to the INFO CLIENTS command.

    • The execution efficiency of the CLUSTER NODES and CLUSTER SLOTS commands is optimized.

    6.0.2.5

    LOW

    2023-08-28

    Feature optimization

    • Statistics about master-replica replication traffic can be collected. You can use the INFO STATS command to separately retrieve the replication traffic statistics.

    6.0.2.4

    HIGH

    2023-08-21

    Feature optimization

    • TLS encryption is supported for cluster instances in direct connection mode.

    Security hardening

    • The CVE-2022-24834 security vulnerability is fixed.

    6.0.2.3

    MEDIUM

    2023-07-17

    Security hardening

    • The master-replica switchover and restart processes for cluster instances are optimized.

    6.0.2.1

    MEDIUM

    2023-06-30

    Security hardening

    • The stability of the cluster architecture is enhanced.

    6.0.2.0

    HIGH

    2023-04-24

    Feature optimization

    • Statistics about hotkeys are regularly recorded in audit logs for troubleshooting.

    • The ptod_enabled parameter applies to performance monitoring and slow log query.

    Security hardening

    • Several issues related to the scaling of cluster instances in extreme scenarios are fixed.

    6.0.1.24

    LOW

    2022-11-14

    Security hardening

    • Stability is enhanced.

    6.0.1.23

    LOW

    2022-09-20

    Feature optimization

    • Delete operations triggered by expiration can be recorded in audit logs.

    • 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

    • The method for handling new connections when the maximum number of connections that are allowed on a cluster instance is exceeded is optimized.

    6.0.1.21

    LOW

    2022-08-30

    Feature optimization

    • The process of starting a cluster instance is optimized.

    6.0.1.20

    LOW

    2022-06-28

    Feature optimization

    • The following issue is fixed: An error may be returned when commands such as ZUNIONSTORE or ZINTERSTORE are run on cluster instances in proxy mode.

    6.0.1.19

    LOW

    2022-06-22

    Feature optimization

    Security hardening

    6.0.1.18

    LOW

    2022-05-17

    Feature optimization

    • The Errorstats - Selected field returned by the INFO command can be deleted.

    6.0.1.17

    LOW

    2022-05-10

    Feature optimization

    • The MOVE command is supported by cluster instances.

    6.0.1.16

    MEDIUM

    2022-04-25

    Security hardening

    • Optimized and upgraded the flow for adding and deleting nodes in the cluster architecture for greater stability.

    6.0.1.15

    LOW

    2022-03-24

    New feature

    • Latency histograms are supported. For more information, see Latency insights.

    • Error statistics can be returned by the INFO command.

    6.0.1.14

    LOW

    2022-02-21

    Feature optimization

    6.0.1.13

    LOW

    2022-01-14

    Feature optimization

    • A metric is added to monitor the amount of memory occupied by database metadata.

    • The top key statistics feature is optimized.

    6.0.1.12

    HIGH

    2021-10-26

    Security hardening

    • The following issue is fixed to enhance stability: An excessive number of slow query logs are generated during configuration changes of cluster instances.

    6.0.1.11

    HIGH

    2021-10-13

    Feature optimization

    • The autonomy capabilities in implementing imperceptible slot migration during configuration changes of cluster instances are enhanced.

    • The performance of commands such as CLUSTER NODES is optimized.

    • The whitelist feature is optimized.

    6.0.1.10

    HIGH

    2021-09-06

    Feature optimization

    • Stability is enhanced.

    6.0.1.9

    MEDIUM

    2021-08-16

    Feature optimization

    • The reliability of imperceptible slot migration is enhanced to strengthen stability.

    6.0.1.8

    MEDIUM

    2021-08-06

    Feature optimization

    • Stability is enhanced.

    6.0.1.7

    MEDIUM

    2021-08-06

    Feature optimization

    • Stability is enhanced.

    6.0.1.6

    MEDIUM

    2021-07-19

    New feature

    Feature optimization

    • The process of deleting source slot data after slot data migration is complete is optimized to enhance data reliability.

    • The incremental data synchronization process during slot data migration is simplified.

    6.0.1.5

    MEDIUM

    2021-06-04

    Feature optimization

    • Stability is enhanced.

    6.0.1.4

    MEDIUM

    2021-05-27

    Feature optimization

    • Stability is enhanced.

    6.0.1.3

    LOW

    2021-05-18

    New feature

    • Statistics about large keys can be collected in real time.

    6.0.1.2

    MEDIUM

    2021-05-07

    Feature optimization

    • Stability is enhanced.

    6.0.1.1

    MEDIUM

    2020-11-28

    New feature

    • New features and enhancements of open source Redis 6.0.9 are supported. For more information, see Redis 6.0 release notes.

    • It supports seamless migration of slots.

    • Virtual IP addresses (VIPs) can be obtained over the Internet. This provides better support for clients that use the direct connection mode.

    Feature optimization

    • Health checks for instances are improved to accelerate the switchover between the master and replica nodes when disk jitters occur.

    6.0.0.5

    HIGH

    2020-08-21

    Fixed issue

    • The issue that statistics about hotkeys are inaccurate is fixed.

    6.0.0.4

    HIGH

    2020-07-20

    Fixed issue

    • The issue that the settings of specific parameters become invalid after an instance restarts is fixed.

    • The issue that replica nodes are incorrectly flagged in slow query logs during data synchronization is fixed.

    6.0.0.3

    LOW

    2020-06-11

    New feature

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

    • The return value of the INFO command includes role information in the Replication section (for example, role:master), and is compatible with Redisson client calls to this information in certain scenarios.

    • Statistics about QPS of read and write commands can be collected. For more information, see View performance monitoring data.

    6.0.0.2

    LOW

    2020-06-02

    New feature

    • New features and enhancements of open source Redis 6.0.4 are supported. For more information, see Redis 6.0 release notes.

    6.0.0.1

    LOW

    2020-05-06

    First release

    • The first minor version is available. This minor version is developed based on open source Redis 6.0.1. For more information, see Redis 6.0 release notes.

    Redis Open-Source Edition Historical release notes for V5.0

    Minor version

    Update level

    Release date

    Category

    Description

    5.5.2.17(5.2.17)

    LOW

    2024-12-10

    Feature optimization

    • The capability to track the cumulative traffic generated by clients and the statistics related to commands is optimized.

    Fixed issue

    • The following issue is fixed: The threshold for detecting large keys becomes invalid when a cluster instance is scaled.

    • The stability of cluster instance scaling is enhanced.

    5.5.2.15(5.2.15)

    HIGH

    2024-10-08

    Security hardening

    • The CVE-2024-31228 security vulnerability is fixed.

    • The CVE-2024-31449 security vulnerability is fixed.

    5.5.2.13(5.2.13)

    LOW

    2024-08-21

    Feature optimization

    • After password-free access over VPC is enabled, attempts to authenticate with incorrect passwords are properly handled.

    5.5.2.12(5.2.12)

    LOW

    2024-07-23

    Feature optimization

    • The whitelist verification logic is optimized when both password-free access over VPC and the #no_loose_check-whitelist-always parameter are enabled.

    • Pipelines can be monitored using the latency insights feature.

    • This minor version is optimized to be compatible with open source Redis 5.0.14.

    Fixed issue

    • The following issue is fixed: The time required to run commands within Lua scripts and Redis MULTI transactions is incorrectly calculated. The affected versions are 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

    • Stability is enhanced.

    5.5.2.9(5.2.9)

    LOW

    2024-05-28

    Feature optimization

    • Monitoring of watched or blocked connections is enhanced.

    • Rehashing-related metrics are added.

    • The real-time hotkey statistics feature is upgraded to allow adjustment of the hotkey detection threshold and display exact QPS. Up to 50 hotkeys can be tracked simultaneously.

    Fixed issue

    • The following issue is fixed: Collected QPS statistics are incorrect due to the use of shared objects. Shared objects are no longer used after the real-time hotkey statistics feature is enabled.

    5.5.2.8(5.2.8)

    LOW

    2024-04-24

    Security hardening

    • Stability is enhanced.

    5.5.2.7(5.2.7)

    LOW

    2024-03-14

    Feature optimization

    • The INFO STATS command is optimized to include statistics about disconnections caused by exceeding client buffer limits:

      • client_query_buffer_limit_disconnections

      • client_output_buffer_limit_disconnections

    • The threshold for real-time collection of statistics about large keys is added. The default value is 2000. For example, if a key of the String type is 2,000 characters in length, the key is considered a large key. If the number of elements in a key of the List, Set, or Hash type exceeds 2,000, the key is considered a large key.

    5.5.2.6(5.2.6)

    LOW

    2024-01-09

    Feature optimization

    • The efficiency of active expiration is optimized.

    • The pubsub_clients metric is added to the INFO CLIENTS command.

    • The execution efficiency of the CLUSTER NODES and CLUSTER SLOTS commands is optimized.

    5.0.5.20(0.5.20)

    HIGH

    2025-01-16

    Security hardening

    • The CVE-2024-46981 security vulnerability is fixed.

    5.2.5

    LOW

    2023-08-28

    Feature optimization

    • Statistics about master-replica replication traffic can be collected. You can use the INFO STATS command to separately retrieve the replication traffic statistics.

    5.2.4

    HIGH

    2023-08-21

    Feature optimization

    • TLS encryption is supported for cluster instances in direct connection mode.

    Security hardening

    • The CVE-2022-24834 security vulnerability is fixed.

    5.2.2

    MEDIUM

    2023-07-17

    Security hardening

    • The master-replica switchover and restart processes for cluster instances are optimized.

    5.2.1

    MEDIUM

    2023-06-30

    Security hardening

    • The stability of the cluster architecture is enhanced.

    5.2.0

    HIGH

    2023-04-24

    Feature optimization

    • Statistics about hotkeys are regularly recorded in audit logs for troubleshooting.

    • The ptod_enabled parameter applies to performance monitoring and slow log query.

    Security hardening

    • Several issues related to the scaling of cluster instances in extreme scenarios are fixed.

    5.1.13

    LOW

    2022-11-14

    Security hardening

    • Stability is enhanced.

    5.1.12

    LOW

    2022-09-20

    Feature optimization

    • Delete operations triggered by expiration can be recorded in audit logs.

    • 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

    • The method for handling new connections when the maximum number of connections that are allowed on a cluster instance is exceeded is optimized.

    5.1.10

    LOW

    2022-08-23

    Feature optimization

    • The process of starting a cluster instance is optimized.

    • Latency histograms are optimized.

    5.1.9

    LOW

    2022-06-22

    Feature optimization

    Security hardening

    5.1.8

    LOW

    2022-05-17

    Feature optimization

    • The Errorstats - Selected field returned by the INFO command can be deleted.

    5.1.7

    LOW

    2022-05-06

    Feature optimization

    • The MOVE command is supported by cluster instances.

    5.1.6

    MEDIUM

    2022-04-25

    Feature optimization

    • The optimized and upgraded cluster architecture streamlines the process of adding and removing nodes and enhances stability.

    5.1.5

    LOW

    2022-04-13

    Feature optimization

    • Stability is enhanced.

    5.1.4

    LOW

    2022-03-24

    New feature

    • Latency histograms are supported. For more information, see Latency insights.

    • Error statistics can be returned by the INFO command.

    5.1.3

    LOW

    2022-02-21

    Feature optimization

    5.1.1

    LOW

    2022-01-04

    Feature optimization

    • A metric is added to monitor the amount of memory occupied by database metadata.

    5.0.9

    LOW

    2021-12-22

    Feature optimization

    • The top key statistics feature is optimized.

    5.0.8

    LOW

    2021-11-15

    Feature optimization

    • A cluster instance can be scaled without affecting the instance.

    • Account names are case-sensitive.

    0.5.19

    HIGH

    2023-08-15

    Security hardening

    • The CVE-2022-24834 security vulnerability is fixed.

    0.5.18

    LOW

    2022-08-23

    Feature optimization

    • The process of starting a cluster instance is optimized.

    0.5.17

    HIGH

    2022-06-07

    Security hardening

    • Stability is enhanced.

    0.5.16

    HIGH

    2022-05-23

    Security hardening

    • The configuration change stability is improved for cluster instances in the direct connection mode.

    0.5.15

    HIGH

    2022-04-25

    Security hardening

    • The following issue is fixed: The migration of large keys may fail during configuration changes of cluster instances in direct connection mode.

    0.5.14

    LOW

    2022-01-04

    Feature optimization

    • A metric is added to monitor the amount of memory occupied by database metadata.

    0.5.12

    LOW

    2021-11-29

    Feature optimization

    • The following issue is fixed: Cluster instances may not be able to restart in specific scenarios.

    0.5.11

    LOW

    2021-11-24

    Feature optimization

    • The following issue is fixed: Statistics about the SPOP command are not collected when the real-time key analysis feature is enabled.

    0.5.10

    HIGH

    2021-10-26

    Security hardening

    • The following issue is fixed to enhance stability: An excessive number of slow query logs are generated during configuration changes of cluster instances.

    0.5.9

    HIGH

    2021-10-15

    Security hardening

    • Stability is enhanced.

    0.5.8

    MEDIUM

    2021-10-13

    Feature update

    • The autonomy capabilities in implementing imperceptible slot migration during configuration changes of cluster instances are enhanced.

    0.5.7

    LOW

    2021-08-26

    New feature

    • QPS (Queries Per Second) statistics are classified. Three types of QPS can be calculated: read QPS, write QPS, and other QPS.

    0.5.6

    HIGH

    2021-08-16

    Fixed issue

    • The reliability of imperceptible slot migration is enhanced to strengthen stability.

    0.5.5

    HIGH

    2021-08-05

    Fixed issue

    • The following issue is fixed: Configuration changes may fail when the direct connection mode is enabled for cluster instances.

    0.5.4

    MEDIUM

    2021-07-27

    Feature update

    • Stability is enhanced.

    0.5.3

    MEDIUM

    2021-07-21

    Feature update

    • The process of deleting source data after data migration is complete is optimized to enhance data reliability.

    • The incremental data synchronization process during data migration is simplified.

    0.5.2

    HIGH

    2021-04-26

    Security hardening

    • The security vulnerabilities of the open source LuaJIT compiler are fixed.

    New feature

    • The migration mechanism for slots is optimized to allow cloud disk-based instances to be scaled without data loss.

    • Statistics about large keys can be collected in real time.

    • VIPs can be obtained over the Internet. This provides better support for private endpoint users.

    0.5.0

    MEDIUM

    2021-03-25

    New feature

    • It supports slot-based seamless migration.

    Feature optimization

    • Many asynchronous client requests can be processed more stably.

    0.4.0

    MEDIUM

    2021-03-09

    New feature

    • Statistics about large keys can be collected in real time.

    • Supports the CONFIG RESETSTAT command.

    • When the illegal address error message is returned, the IP address of the client is included in the error message. You can configure an IP address whitelist for your instance based on the IP address prompt.

      Figure 1. Sample IP address promptIP地址提示

    Feature optimization

    • Health checks for instances are improved to accelerate the switchover between the master and replica nodes when disk jitters occur.

    0.3.10

    HIGH

    2020-09-25

    Fixed issue

    • Fixed the issue where the return value of the CLUSTER NODES command did not comply with the open-source protocol, specifically that slots were separated by spaces, to prevent client parsing errors.

    0.3.9

    LOW

    2020-07-20

    New feature

    • The security group feature provided by Elastic Compute Service (ECS) is supported to simplify O&M. To allow ECS instances to access a Redis instance, you can add the security groups to which the ECS instances belong to the Redis instance. You do not need to manually add the IP addresses of the ECS instances to the whitelists of the Redis instance. For more information, see Step 2: Configure whitelists.

    0.3.8

    HIGH

    2020-07-14

    Feature optimization

    • Added support for the CLIENT UNBLOCK subcommand.

    Fixed issue

    • The issue that the expiration time is parsed incorrectly when slots are migrated is fixed.

    • Latency flag bits in audit logs are modified to help identify these bits in master and replica audit logs.

    0.3.7

    HIGH

    2020-06-17

    Fixed issue

    • The issue that the returned IP address is unreachable in direct connection mode is fixed.

    0.3.6

    LOW

    2020-06-09

    New feature

    • The return value of the INFO command includes support in the Replication section for displaying role information (for example, role:master), and is compatible with Redisson client calls to this information in certain scenarios.

    0.3.5

    LOW

    2020-06-05

    New feature

    0.3.4

    HIGH

    2020-04-08

    Fixed issue

    • The issue that the system does not respond when hotkeys are evicted is fixed.

    • The following issue is fixed: The system does not respond due to the use-after-free (UAF) vulnerability when the audit log feature is disabled.

    0.3.1

    HIGH

    2020-02-20

    New feature

    • The audit log feature is supported. This feature lets you query, analyze, and export logs. For more information, see Audit logs.

    • The direct connection mode is supported. Clients can bypass proxy nodes and use private endpoints to connect to cluster instances. This is similar to connecting to a native Redis cluster. The direct connection mode reduces communication overheads and the response time of Redis. For more information, see Enable direct connection.

    • You can request a public endpoint for scenarios that require passwordless access to a Virtual Private Cloud (VPC).

    • Add a statistical scenario for the INFO command regarding oom_err_count: the maxmemory data volume is counted when it exceeds the configured value.

    Fixed issue

    • Fixed a crash that occurs when the source and destination of the RPOPLPUSH command are the same and the expiration mechanism is triggered during execution.

    • The following issue is fixed: Authentication failures occur when instances that are deployed in VPCs are accessed without using passwords.

    0.2.0

    LOW

    2020-01-17

    New feature

    • Statistics about hotkeys can be collected in real time to help identify hotkeys in instances. For more information, see Top Key statistics.

    0.1.2

    LOW

    2019-11-26

    New feature

    Earlier than 0.1.2

    N/A

    N/A

    N/A

    • These earlier minor versions belong to V5.0. We recommend that you update your instances to the latest minor version.

    Redis Open-Source Edition Historical release notes for V4.0

    Minor version

    Update level

    Release date

    Category

    Description

    1.9.17

    LOW

    2023-11-25

    Security hardening

    • Stability is enhanced.

    1.9.16

    LOW

    2023-08-15

    Security hardening

    • Stability is enhanced.

    1.9.15

    LOW

    2023-05-17

    Feature optimization

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

    1.9.14

    LOW

    2022-11-14

    Feature optimization

    • Statistics collection is optimized.

    1.9.13

    LOW

    2022-08-23

    Feature optimization

    • The process of starting a cluster instance is optimized.

    1.9.12

    HIGH

    2022-06-07

    Security hardening

    • Stability is enhanced.

    1.9.10

    HIGH

    2022-05-23

    Security hardening

    • The configuration change stability is improved for cluster instances in the direct connection mode.

    1.9.9

    HIGH

    2022-04-25

    Security hardening

    • Stability is enhanced.

    1.9.8

    HIGH

    2022-04-25

    Security hardening

    • The following issue is fixed: The migration of large keys may fail during configuration changes of cluster instances in direct connection mode.

    1.9.6

    HIGH

    2021-10-15

    Security hardening

    • Stability is enhanced.

    1.9.5

    LOW

    2021-09-13

    New feature

    • QPS (Queries Per Second) statistics are classified. Three types of QPS can be calculated: read QPS, write QPS, and other QPS.

    1.9.4

    HIGH

    2021-08-05

    Fixed issue

    • The following issue is fixed: Configuration changes may fail when the direct connection mode is enabled for cluster instances.

    1.9.3

    MEDIUM

    2021-07-20

    Feature update

    • Stability is enhanced.

    1.9.2

    HIGH

    2021-04-19

    Security hardening

    • The security vulnerabilities of the open source LuaJIT compiler are fixed.

    New feature

    • VIPs can be obtained over the Internet. This provides better support for private endpoint users.

    1.9.1

    MEDIUM

    2021-03-08

    Feature optimization

    • Health checks for instances are improved to accelerate the switchover between the master and replica nodes when disk jitters occur.

    • Optimized the ability of large-memory instances to execute BGSAVE and REWRITE using fork to avoid potential long pauses.

    1.9.0

    LOW

    2021-02-22

    New feature

    • When the illegal address error message is returned, the IP address of the client is included in the error message. You can configure an IP address whitelist for your instance based on the IP address prompt.

      Figure 2. Sample IP address promptIP地址提示

    1.8.8

    HIGH

    2020-09-25

    Fixed issue

    • Fixed an issue with the CLUSTER NODES command’s return value, where slots were separated by spaces in violation of the open source protocol, to prevent parsing errors on the client.

    1.8.7

    LOW

    2020-07-20

    New feature

    • The security group feature provided by Elastic Compute Service (ECS) is supported to simplify O&M. To allow ECS instances to access a Redis instance, you can add the security groups to which the ECS instances belong to the Redis instance. You do not need to manually add the IP addresses of the ECS instances to the whitelists of the Redis instance. For more information, see Step 2: Configure whitelists.

    1.8.6

    HIGH

    2020-07-14

    Fixed issue

    • Latency flag bits in audit logs are modified to help identify these bits in master and replica audit logs.

    1.8.5

    LOW

    2020-06-09

    New feature

    • In the return value of the INFO command, the Replication section now displays role information (for example, role:master), ensuring compatibility with calls for this information from the Redisson client in some scenarios.

    1.8.4

    LOW

    2020-06-05

    New feature

    1.8.3

    HIGH

    2020-04-08

    Fixed issue

    • Fixed a crash issue that could occur during hot spot key eviction.

    • The following issue is fixed: The system does not respond due to the use-after-free (UAF) vulnerability when the audit log feature is disabled.

    1.8.1

    LOW

    2020-02-20

    New feature

    1.8.0

    HIGH

    2020-01-16

    New feature

    • Statistics about hotkeys can be collected in real time to help identify hotkeys in instances. For more information, see Top Key statistics.

    Fixed issue

    • Fixed an issue in the direct access scenario where the response from the INFO command could include cluster_enabled information, allowing certain SDKs to correctly auto-negotiate to cluster mode.

    1.7.1

    MEDIUM

    2019-11-20

    New feature

    • Read-only Lua scripts can be executed on read replicas of read/write splitting instances.

    • The direct connection mode is supported. Clients can bypass proxy nodes and use private endpoints to connect to Redis instances. This is similar to connecting to a native Redis cluster. The direct connection mode reduces communication overheads and the response time of Redis. For more information, see Enable direct connection.

    • The output of the INFO command now includes statistics on Lua script memory usage in the Memory section.

    Feature optimization

    • Optimize memory usage for audit logs.

    1.5.8

    HIGH

    2019-09-23

    Fixed issue

    • Fixed an issue in the legacy Global Distributed Cache link where the atomicity of the SETEX command was compromised during two-way synchronization.

    1.5.6

    HIGH

    2019-08-28

    New feature

    • Audit logs can record latency events.

    Fixed issue

    • Fixed an issue where slow requests initiated by clients using the KEYS, FLUSHALL, FLUSHDB, and other commands could trigger master-standby switchover.

    1.5.4

    LOW

    2019-07-08

    New feature

    • The audit log feature is supported. This feature lets you query, analyze, and export logs. For more information, see Audit logs.

    • Latency statistics during the entire event lifecycle are recorded to help you gain insights into the status of the engine.

    1.5.2

    HIGH

    2019-07-04

    Fixed issue

    • Fixed a crash caused by the expiration mechanism being triggered during the execution of an RPOPLPUSH command with the same source and destination.

    1.4.0

    HIGH

    2019-05-15

    Fixed issue

    • The following issue is fixed: A master-replica switchover is triggered when Redis Database (RDB) files or append-only files (AOFs) are loaded onto an instance after the instance restarts.

    Earlier than 1.4.0

    N/A

    N/A

    N/A

    • These earlier minor versions belong to V4.0. We recommend that you update your instances to the latest minor version.

    References