A vision for a next-generation timeline

A vision for a next-generation timeline Jade and Ginger Sofya Next Gen Spec Playlists: ‘matrix-conf-2026’ videos starting here / audio 20 min 2026-10-21 672 Fahrplan

下一代时间线的愿景 Jade 和 Ginger Sofya 下一代规范播放列表：‘matrix-conf-2026’ 视频由此开始 / 音频 20 分钟 2026-10-21 672 Fahrplan

The timeline is the most interacted-with piece of any chat software. It’s where messages live! It’s hard to have a chat app without one. Unfortunately, the matrix protocol has… compromises… in the timeline made for the sake of federation.

时间线是任何聊天软件中交互最多的部分。它是消息存在的地方！没有时间线的聊天应用很难想象。不幸的是，Matrix 协议为了实现联邦化，在时间线上做出了一些……妥协。

From the incosistent ordering between sync and history on Synapse, to the inability to jump to pinned messages from before you joined, to the mystery of what happens when you join a room your server previously left. The good news is we have a solution! The bad news is it’s gonna take a while.

从 Synapse 上同步和历史记录之间不一致的排序，到无法跳转到加入之前的置顶消息，再到当你加入一个服务器之前曾退出的房间时所发生的神秘状况。好消息是我们有解决方案！坏消息是这需要一些时间。

This talk is a rundown of every step needed to get a next-generation timeline. I’ll explain stitched ordering, timeline fragments, and why we need state DAGs. Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/

本次演讲将概述实现下一代时间线所需的每一个步骤。我将解释拼接排序、时间线片段以及为什么我们需要状态有向无环图（DAGs）。根据 https://creativecommons.org/licenses/by-sa/4.0/ 向公众授权。

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