<![CDATA[Logical clock]]>Would it be helpful to add an (optional) logical clock mechanism to ActivityPub?

https://en.wikipedia.org/wiki/Logical_clock

For example, to handle Delete before Create or Undo before the activity being undone?

]]>https://postcall.pub/topic/0c0c982f-2735-4874-b23a-73d7712089cd/logical-clockRSS for NodeFri, 23 Oct 2026 02:10:20 GMTThu, 03 Sep 2026 22:55:00 GMT60<![CDATA[Reply to Logical clock on Mon, 05 Oct 2026 02:31:09 GMT]]>@evan

@hongminhee
just btw,
long time ago sent a playground for deno/kv where I used `ulid` within the Activity Ids to achieve this.
There is above FEP now …

]]>https://postcall.pub/post/https://digitalcourage.social/users/sl007/statuses/117385951280921524https://postcall.pub/post/https://digitalcourage.social/users/sl007/statuses/117385951280921524Mon, 05 Oct 2026 02:31:09 GMT<![CDATA[Reply to Logical clock on Sun, 04 Oct 2026 17:05:23 GMT]]>I added a FEP today: https://codeberg.org/fediverse/fep/pulls/945

]]>https://postcall.pub/post/https://activitypub.space/post/2527https://postcall.pub/post/https://activitypub.space/post/2527Sun, 04 Oct 2026 17:05:23 GMT<![CDATA[Reply to Logical clock on Sun, 04 Oct 2026 17:05:05 GMT]]>@lobingera As far as I can tell, no other W3C protocols use logical clocks.

]]>https://postcall.pub/post/https://activitypub.space/post/2526https://postcall.pub/post/https://activitypub.space/post/2526Sun, 04 Oct 2026 17:05:05 GMT<![CDATA[Reply to Logical clock on Sat, 05 Sep 2026 07:07:26 GMT]]>Good idea (esp. the optional). Do we know other protocols in the W3C space, that use this already?

]]>https://postcall.pub/post/https://activitypub.space/post/2422https://postcall.pub/post/https://activitypub.space/post/2422Sat, 05 Sep 2026 07:07:26 GMT<![CDATA[Reply to Logical clock on Fri, 04 Sep 2026 15:35:10 GMT]]>@evan I suppose it would be a helpful data point if one were implemented.

For example, if every activity pertaining to a specific object were given an increasing counter recorded separately <img class="not-responsive emoji" src="https://activitypub.space/assets/plugins/nodebb-plugin-emoji/emoji/android/1f937.png?v=4459463b5a0" title="🤷" />

So long as it's standardized in some way, I don't see any reason why this would interfere with regular federation.

]]>https://postcall.pub/post/https://activitypub.space/post/2421https://postcall.pub/post/https://activitypub.space/post/2421Fri, 04 Sep 2026 15:35:10 GMT