Unity Package Manager はパッケージのコンテンツとレジストリのメタデータをダウンロードすると、グローバルキャッシュに保存します。これにより、パッケージの再利用や共有をより効率的に行い、オフラインでも保存されたパッケージをインストールして更新することができます。
Note: The global cache doesn’t include packages in the .unitypackage
format that come from the Asset Store. The Package Manager stores these types of packages in a separate cache. For more information, refer to Asset Store packages.
デフォルトでは、Unity はグローバルキャッシュをルートディレクトリに保存します。ルートディレクトリは、オペレーティングシステムに依存します (Windows の場合はユーザーアカウントの種類にもよります)。
オペレーティングシステム | デフォルトルートディレクトリ | 例 |
---|---|---|
Windows (ユーザーアカウント) | %LOCALAPPDATA%\Unity\cache\upm |
C:\Users\yourname\AppData\Local\Unity\cache\upm |
Windows (システムユーザーアカウント) | %ALLUSERSPROFILE%\Unity\cache\upm |
C:\ProgramData\Unity\cache\upm |
macOS | $HOME/Library/Caches/Unity/upm |
/Users/yourname/Library/Caches/Unity/upm |
Linux | $HOME/.cache/Unity/upm |
/home/yourname/.cache/Unity/upm |
Tip: You can override the location of this root directory. Refer to Customize the global cache for more information.
The Package Manager global cache uses subsidiary caches, each serving a different purpose. The Package Manager stores these subsidiary caches in subfolders under the folder of the global cache:
サブフォルダー | 説明 |
---|---|
db |
Registry data cache used for storing package content and metadata. |
packages |
Contains the uncompressed contents of package tarballs fetched from a registry. |
git-lfs |
Contains downloaded Git Large File Storage (LFS) files, if you’ve enabled Git LFS. |
これらのサブフォルダーの中では、それぞれのレジストリが独自のパスを持っていて、異なるレジストリでホストされているパッケージが混ざらないようになっています。
Tip: You can override the location of these folders. Refer to Customize the global cache for more information.
Starting with version 2023.2.0f1 of the Unity Editor, the size of the registry data cache (the db
subfolder) is limited to 10 gigabytes (GB). When that limit is reached, the Package Manager prunes the registry data cache by evicting the least recently used content (based on oldest date a package was installed into a project). In other words, the first packages the Package Manager evicts are the ones you added to a project the longest time ago. However, although the Package Manager evicts these packages from the cache, they remain in any projects where you installed them. The next time you add these packages to a different project, the Package Manager will fetch them from the appropriate registry, rather than from your cache.
You can override the size of the registry data cache limit. For information, refer to Customize the global cache.
Unity エディターのプロセスを実行するユーザーアカウントは、ルートディレクトリとそのコンテンツに対する完全な書き込み権限を持っていなければなりません。これらの権限がないと、Package Manager はパッケージのメタデータとコンテンツをダウンロードしてキャッシュに保存することができません。
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