コンテンツキャッシュが働いてない件

Mac

MacStudioの[システム設定]→[共有]→[コンテンツキャッシュ]だけでは、拙宅の他のAppleデバイスがキャッシュとして利用してなかったらしい。

MacBook AirでAssetCacheLocatorUtilを実行すると、以下のようになる。

AssetCacheLocatorUtil
2026-03-25 11:21:22.781 AssetCacheLocatorUtil[48005:2303833] AssetCacheLocatorUtil version 140.1.2, framework version 140.1.2
2026-03-25 11:21:22.781 AssetCacheLocatorUtil[48005:2303833] Determining public IP address...
2026-03-25 11:21:23.276 AssetCacheLocatorUtil[48005:2303833] This computer's public IP address is 59.138.207.107.
2026-03-25 11:21:23.276 AssetCacheLocatorUtil[48005:2303833] --- Information for system services:
2026-03-25 11:21:23.276 AssetCacheLocatorUtil[48005:2303833] Checking whether there might be content caches available...
2026-03-25 11:21:23.277 AssetCacheLocatorUtil[48005:2303833] There might be content caches available.
2026-03-25 11:21:23.278 AssetCacheLocatorUtil[48005:2303833] Finding saved content caches supporting personal caching...
2026-03-25 11:21:23.279 AssetCacheLocatorUtil[48005:2303833] Found 1 content cache
2026-03-25 11:21:23.279 AssetCacheLocatorUtil[48005:2303833] Finding saved content caches supporting personal caching and import...
2026-03-25 11:21:23.279 AssetCacheLocatorUtil[48005:2303833] Found 1 content cache
2026-03-25 11:21:23.279 AssetCacheLocatorUtil[48005:2303833] Finding saved content caches supporting shared caching...
2026-03-25 11:21:23.279 AssetCacheLocatorUtil[48005:2303833] Found 1 content cache
2026-03-25 11:21:23.280 AssetCacheLocatorUtil[48005:2303833] 192.168.1.35:49421, rank 1, not favored, healthy, guid A051BF14-3B64-4A2F-A1F4-91A35891D377, valid until 2026-03-25 12:07:04; supports personal caching: yes, and import: yes, shared caching: yes
2026-03-25 11:21:23.280 AssetCacheLocatorUtil[48005:2303833] Determining saved configured public IP address ranges...
2026-03-25 11:21:23.280 AssetCacheLocatorUtil[48005:2303833] No public IP address ranges are configured.
2026-03-25 11:21:23.280 AssetCacheLocatorUtil[48005:2303833] Determining saved favored server ranges...
2026-03-25 11:21:23.280 AssetCacheLocatorUtil[48005:2303833] No favored server ranges are configured.
2026-03-25 11:21:23.280 AssetCacheLocatorUtil[48005:2303833] Finding refreshed content caches supporting personal caching...
2026-03-25 11:21:23.718 AssetCacheLocatorUtil[48005:2303833] Found 1 content cache
2026-03-25 11:21:23.719 AssetCacheLocatorUtil[48005:2303833] Finding refreshed content caches supporting personal caching and import...
2026-03-25 11:21:23.719 AssetCacheLocatorUtil[48005:2303833] Found 1 content cache
2026-03-25 11:21:23.719 AssetCacheLocatorUtil[48005:2303833] Finding refreshed content caches supporting shared caching...
2026-03-25 11:21:23.720 AssetCacheLocatorUtil[48005:2303833] Found 1 content cache
2026-03-25 11:21:23.720 AssetCacheLocatorUtil[48005:2303833] 192.168.1.35:49421, rank 1, not favored, healthy, guid A051BF14-3B64-4A2F-A1F4-91A35891D377, valid until 2026-03-25 12:21:23; supports personal caching: yes, and import: yes, shared caching: yes
2026-03-25 11:21:23.720 AssetCacheLocatorUtil[48005:2303833] Determining refreshed configured public IP address ranges...
2026-03-25 11:21:23.720 AssetCacheLocatorUtil[48005:2303833] No public IP address ranges are configured.
2026-03-25 11:21:23.720 AssetCacheLocatorUtil[48005:2303833] Determining refreshed favored server ranges...
2026-03-25 11:21:23.720 AssetCacheLocatorUtil[48005:2303833] No favored server ranges are configured.
2026-03-25 11:21:23.720 AssetCacheLocatorUtil[48005:2303833] --- Information for user 501 (results for other users may be different):
2026-03-25 11:21:23.720 AssetCacheLocatorUtil[48005:2303833] Checking whether there might be content caches available...
2026-03-25 11:21:23.721 AssetCacheLocatorUtil[48005:2303833] There might be content caches available.
2026-03-25 11:21:23.721 AssetCacheLocatorUtil[48005:2303833] Finding saved content caches supporting personal caching...
2026-03-25 11:21:23.722 AssetCacheLocatorUtil[48005:2303833] Found 1 content cache
2026-03-25 11:21:23.722 AssetCacheLocatorUtil[48005:2303833] Finding saved content caches supporting personal caching and import...
2026-03-25 11:21:23.722 AssetCacheLocatorUtil[48005:2303833] Found 1 content cache
2026-03-25 11:21:23.722 AssetCacheLocatorUtil[48005:2303833] Finding saved content caches supporting shared caching...
2026-03-25 11:21:23.722 AssetCacheLocatorUtil[48005:2303833] Found 1 content cache
2026-03-25 11:21:23.722 AssetCacheLocatorUtil[48005:2303833] 192.168.1.35:49421, rank 1, not favored, healthy, guid A051BF14-3B64-4A2F-A1F4-91A35891D377, valid until 2026-03-25 12:08:20; supports personal caching: yes, and import: yes, shared caching: yes
2026-03-25 11:21:23.722 AssetCacheLocatorUtil[48005:2303833] Determining saved configured public IP address ranges...
2026-03-25 11:21:23.723 AssetCacheLocatorUtil[48005:2303833] No public IP address ranges are configured.
2026-03-25 11:21:23.723 AssetCacheLocatorUtil[48005:2303833] Determining saved favored server ranges...
2026-03-25 11:21:23.723 AssetCacheLocatorUtil[48005:2303833] No favored server ranges are configured.
2026-03-25 11:21:23.723 AssetCacheLocatorUtil[48005:2303833] Finding refreshed content caches supporting personal caching...
2026-03-25 11:21:24.122 AssetCacheLocatorUtil[48005:2303833] Found 1 content cache
2026-03-25 11:21:24.123 AssetCacheLocatorUtil[48005:2303833] Finding refreshed content caches supporting personal caching and import...
2026-03-25 11:21:24.123 AssetCacheLocatorUtil[48005:2303833] Found 1 content cache
2026-03-25 11:21:24.123 AssetCacheLocatorUtil[48005:2303833] Finding refreshed content caches supporting shared caching...
2026-03-25 11:21:24.123 AssetCacheLocatorUtil[48005:2303833] Found 1 content cache
2026-03-25 11:21:24.123 AssetCacheLocatorUtil[48005:2303833] 192.168.1.35:49421, rank 1, not favored, healthy, guid A051BF14-3B64-4A2F-A1F4-91A35891D377, valid until 2026-03-25 12:21:24; supports personal caching: yes, and import: yes, shared caching: yes
2026-03-25 11:21:24.123 AssetCacheLocatorUtil[48005:2303833] Determining refreshed configured public IP address ranges...
2026-03-25 11:21:24.123 AssetCacheLocatorUtil[48005:2303833] No public IP address ranges are configured.
2026-03-25 11:21:24.123 AssetCacheLocatorUtil[48005:2303833] Determining refreshed favored server ranges...
2026-03-25 11:21:24.123 AssetCacheLocatorUtil[48005:2303833] No favored server ranges are configured.
2026-03-25 11:21:24.123 AssetCacheLocatorUtil[48005:2303833] Testing all found content caches for reachability...
2026-03-25 11:21:24.131 AssetCacheLocato...

このうち重要なのは、

キャッシュは見えているけど、not favoredなので利用しない、となってること。

Found 1 content cache
192.168.1.35:49421, rank 1, not favored

で、内向きDNSに以下のレコードを追加して、BINDを再起動。

_aaplcache._tcp.rio.st.    10800    IN TXT    "fss=192.168.1.35"

MacBook Airも再起動した後、再度、AssetCacheLocatorUtilを実行。favoredになってる。

2026-03-25 11:38:33.197 AssetCacheLocatorUtil[19785:65219] Found 1 content cache
2026-03-25 11:38:33.197 AssetCacheLocatorUtil[19785:65219] 192.168.1.35:49421, rank 1, favored, healthy, guid A051BF14-3B64-4A2F-A1F4-91A35891D377, valid until 2026-03-25 12:38:15; supports personal caching: yes, and import: yes, shared caching: yes

MacBook Airでbrew upgradeを実行。

MacStudioで確認、キャッシュされてる。

AssetCacheManagerUtil status
Content caching status:
    Activated: true
    Active: true
    ActualCacheUsed: 9.46 GB
    CacheDetails: (4)
        iCloud: 1.6 MB
        iOS Software: 81.3 MB
        Mac Software: 499 KB
        Other: 9.38 GB
    CacheFree: 457.42 GB
    CacheLimit: unlimited
    CacheStatus: OK
    CacheUsed: 9.46 GB