Noticed some servers had a recent spike in the remote media attachment cache. My best guess is that it's related to https://github.com/mastodon/mastodon/issues/37359. What I could identify matches the reported issue.
For most servers, this self-resolves: Masto.host clears remote media cache after 7 days, so usage returns to normal once it expires. Alternatively, setting Public Timelines to "Authenticated users only" (Administration -> Server Settings -> Discovery) can reduce the crawl surface (but not fully stop it).
Masto.host
npub18s…sl2gu
2026-05-18 18:32:21 UTC
Author Public Key
npub18skclky3ktc59dzlfzsrf597ulpkqsv0m3ct5khtnr70nuv5rs8s2sl2guSeen on
wss://relay.momostr.pinkPublished at
2026-05-18 18:32:21 UTCEvent JSON
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"pubkey": "3c2d8fd891b2f142b45f48a034d0bee7c360418fdc70ba5aeb98fcf9f1941c0f",
"created_at": 1779129141,
"kind": 1,
"tags": [
[
"proxy",
"https://mastodon.social/@mastohost/116597007400766713",
"web"
],
[
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"https://mastodon.social/users/mastohost/statuses/116597007400766713",
"activitypub"
],
[
"L",
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[
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"content": "Noticed some servers had a recent spike in the remote media attachment cache. My best guess is that it's related to https://github.com/mastodon/mastodon/issues/37359. What I could identify matches the reported issue.\n\nFor most servers, this self-resolves: Masto.host clears remote media cache after 7 days, so usage returns to normal once it expires. Alternatively, setting Public Timelines to \"Authenticated users only\" (Administration -\u003e Server Settings -\u003e Discovery) can reduce the crawl surface (but not fully stop it).",
"sig": "3e26d60a258cfd36081c2a6eee6bb100a673c70eda14d2a5d6c59156c7999dc9ac9856b7d3f69f5f043e5aaab81cc3b617131c17897b0f4aa4594d7a7ba71a41"
}