A small tool to view real-world ActivityPub objects as JSON! Enter a URL
or username from Mastodon or a similar service below, and we'll send a
request with
the right
Accept
header
to the server to view the underlying object.
{
"@context": [
"https://www.w3.org/ns/activitystreams",
{
"ostatus": "http://ostatus.org#",
"atomUri": "ostatus:atomUri",
"inReplyToAtomUri": "ostatus:inReplyToAtomUri",
"conversation": "ostatus:conversation",
"sensitive": "as:sensitive",
"toot": "http://joinmastodon.org/ns#",
"votersCount": "toot:votersCount"
}
],
"id": "https://fosstodon.org/users/derekkraan/statuses/112478091225839118",
"type": "Note",
"summary": null,
"inReplyTo": "https://fosstodon.org/users/derekkraan/statuses/112478088689962575",
"published": "2024-05-21T08:17:48Z",
"url": "https://fosstodon.org/@derekkraan/112478091225839118",
"attributedTo": "https://fosstodon.org/users/derekkraan",
"to": [
"https://www.w3.org/ns/activitystreams#Public"
],
"cc": [
"https://fosstodon.org/users/derekkraan/followers"
],
"sensitive": false,
"atomUri": "https://fosstodon.org/users/derekkraan/statuses/112478091225839118",
"inReplyToAtomUri": "https://fosstodon.org/users/derekkraan/statuses/112478088689962575",
"conversation": "tag:fosstodon.org,2024-05-21:objectId=210523424:objectType=Conversation",
"content": "<p>What are dead rows anyways? Postgres runs on MVCC - Multi Version Concurrency Control. Basically, an UPDATE does not change a row in-place.</p><p>Instead, a new row is written, and the old row becomes "dead". Dead rows can't be deleted right away, because they might still be visible to another transaction!</p><p>So VACUUM comes along later and cleans them up. But, VACUUM is smart, it doesn't delete any dead rows that a running transaction might be able to see! This is a problem, ...</p><p>3/🧵</p>",
"contentMap": {
"en": "<p>What are dead rows anyways? Postgres runs on MVCC - Multi Version Concurrency Control. Basically, an UPDATE does not change a row in-place.</p><p>Instead, a new row is written, and the old row becomes "dead". Dead rows can't be deleted right away, because they might still be visible to another transaction!</p><p>So VACUUM comes along later and cleans them up. But, VACUUM is smart, it doesn't delete any dead rows that a running transaction might be able to see! This is a problem, ...</p><p>3/🧵</p>"
},
"attachment": [],
"tag": [],
"replies": {
"id": "https://fosstodon.org/users/derekkraan/statuses/112478091225839118/replies",
"type": "Collection",
"first": {
"type": "CollectionPage",
"next": "https://fosstodon.org/users/derekkraan/statuses/112478091225839118/replies?min_id=112478092727004509&page=true",
"partOf": "https://fosstodon.org/users/derekkraan/statuses/112478091225839118/replies",
"items": [
"https://fosstodon.org/users/derekkraan/statuses/112478092727004509"
]
}
},
"likes": {
"id": "https://fosstodon.org/users/derekkraan/statuses/112478091225839118/likes",
"type": "Collection",
"totalItems": 1
},
"shares": {
"id": "https://fosstodon.org/users/derekkraan/statuses/112478091225839118/shares",
"type": "Collection",
"totalItems": 0
}
}