Sourced from com.tencent:mmkv's releases.

v2.2.1 / 2025-04-25

Changes for All platforms

• Add importFrom().

Android

• Fix a bug on initialization.

v2.2.0 / 2025-04-24

We introduce the Mayfly FD (short-lived file descriptor) enhancement, reducing MMKV's fd footprint by half and more. For a single-process mode MMKV instance, the fd footprint is reduced to zero (except Android/OHOS, details below). For a multi-process mode MMKV instance, the fd footprint is reduced by half, for we still need a long-lived fd to inter-process lock the shared memory.

Changes for All platforms

• Add Mayfly FD (short-lived file descriptor) enhancement.
• Improve multi-process access efficiency by about 20%.
• Add checkExist() to check if a MMKV instance exists on disk.
• Drop deprecated armv7 AES hardware acceleration.

Android

• Reduce the fd footprint by half. For a single-process mode MMKV instance, we still need a long-lived fd to support the process-mode checker and legacy name upgrading. In the far future, when all legacy names have been upgraded, we might drop the long-lived fd like other platforms.
• Upgrade Android compileSdk/targetSdk to 35, NDK to 28.1, Java to 11, Gradle to 8.11.1, and AGP to 8.9.2.

HarmonyOS NEXT

• Reduce the fd footprint by half. For a single-process mode MMKV instance, we still need a long-lived fd to support the legacy name upgrading. In the far future, when all legacy names have been upgraded, we might drop the long-lived fd like other platforms.
• Drop checkProcessMode(), it’s never been used.
• Improve obfuscation configuration with relative path.

iOS

• Add +mmkvGroupPath to get the group folder for MMKV multi-process storage.

Sourced from com.tencent:mmkv's changelog.

v2.2.1 / 2025-04-25

Changes for All platforms

• Add importFrom().

Android

• Fix a bug on initialization.

v2.2.0 / 2025-04-24

We introduce the Mayfly FD (short-lived file descriptor) enhancement, reducing MMKV's fd footprint by half and more. For a single-process mode MMKV instance, the fd footprint is reduced to zero (except Android/OHOS, details below). For a multi-process mode MMKV instance, the fd footprint is reduced by half, for we still need a long-lived fd to inter-process lock the shared memory.

Changes for All platforms

• Add Mayfly FD (short-lived file descriptor) enhancement.
• Improve multi-process access efficiency by about 20%.
• Add checkExist() to check if a MMKV instance exists on disk.
• Drop deprecated armv7 AES hardware acceleration.

Android

• Reduce the fd footprint by half. For a single-process mode MMKV instance, we still need a long-lived fd to support the process-mode checker and legacy name upgrading. In the far future, when all legacy names have been upgraded, we might drop the long-lived fd like other platforms.
• Upgrade Android compileSdk/targetSdk to 35, NDK to 28.1, Java to 11, Gradle to 8.11.1, and AGP to 8.9.2.

HarmonyOS NEXT

• Reduce the fd footprint by half. For a single-process mode MMKV instance, we still need a long-lived fd to support the legacy name upgrading. In the far future, when all legacy names have been upgraded, we might drop the long-lived fd like other platforms.
• Drop checkProcessMode(), it’s never been used.
• Improve obfuscation configuration with relative path.

iOS

• Add +mmkvGroupPath to get the group folder for MMKV multi-process storage.

Flutter

• Add isFileValid().
• Add groupPath() on iOS.
• Fix checkContentChangedByOuterProcess() not working bug.

• bd7a9f7 Merge pull request #1524 from Tencent/dev
• 73151c5 upgrade mmkv version for android demo project
• 61facda Merge pull request #1523 from Tencent/dev
• c8f3a0e add importFrom() for Win32
• dcfbc83 add importFrom() for Python/Golang
• 6ee1a6d tidy ohos
• a6900eb add importFrom() for OHOS
• eea9473 add importFrom() for Flutter
• 9ed7248 prepare for v2.2.1
• a7c0d9c add importFrom() for Android
• Additional commits viewable in compare view

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