matrix-org

seshat

Rust2019–2023

matrix-org / seshat

seshat

A Matrix message database/indexer

Data & Databases

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2Distinct people

5Mentions

0Explicit recommenders

129GitHub stars

REPOSITORY AT A GLANCE

What to know before exploring

What it is

A Matrix message database/indexer

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

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Also in these discussions

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This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:03:16 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year5 dated mentions

Observed mentions: 2019-12-20 00:23:05 UTC to 2023-07-07 10:49:11 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges

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Period	Start (UTC)	End (exclusive, UTC)	Mentions	Comments
2019	2019-01-01 00:00:00 UTC	2020-01-01 00:00:00 UTC	1	1
2020	2020-01-01 00:00:00 UTC	2021-01-01 00:00:00 UTC	0	0
2021	2021-01-01 00:00:00 UTC	2022-01-01 00:00:00 UTC	1	1
2022	2022-01-01 00:00:00 UTC	2023-01-01 00:00:00 UTC	1	1
2023	2023-01-01 00:00:00 UTC	2024-01-01 00:00:00 UTC	2	2

What Hacker News says

5 sources

Arathorn·Jul 7, 2023

> Can you already say something about encrypted search support in Element X? It's planned, and should be way easier to do than on old Element given we can hook the clientside search indexer (https://github.com/matrix-org/seshat), which happens to be in Rust, directly into matrix-rust-sdk and thence both EIX and EAX. Whereas previously we'd have had to do custom integs with Seshat on EI and EA like the current one on Element Desktop, which just becomes a maintenance nightmare. Hopefully should be ready in the next months. > Also since you mentioned it, is multiaccount support something that we can realistically expect to see in Element X someday (maybe even in a v1.0?). If I remember correctly for the previous iterations of the clients the status was mostly "maybe one day" or "the architecture does not really support it". Definitely. We

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actually had it pre-Element in Matrix Console, and then it got lost in Element. The hope is to get it into Element X relatively early (as it's a pain in the ass to add it late)

In Element X Matrix client now on iOS early release

Arathorn·Jan 1, 2023

https://github.com/matrix-org/seshat - we’ve had it for years on desktop; just need to hook it up on mobile. it’s currently blocked behind unifying sdks, so we don’t have to do it twice in iOS & Android.

In Matrix Community Year in Review 2022

Arathorn·Mar 5, 2022

The competitive gap with Discord in terms of media quality is probably something like: * Need a low-latency SFU. This should be very doable; not only are there a lot of good FOSS SFUs to build on top of these days, the history of the Matrix team is actually that we built VoIP stacks fulltime before we shifted focus to Matrix, and we've built MCUs and media servers of all flavours in the past. MSC3401 should also give us a competitive edge given latency will be automagically minimised by using the physically closest decentralised SFU, thus letting anyone bring their SFU to the party. * Needs a SFU with good rate control (and/or FEC). This is probably the single most important thing to get right in terms of quality. Signal wrote up a good overview of why: https://signal.org/blog/how-to-build-encrypted-group-calls/ * Excellent noise canc

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ellation (and background noise elimination, microphone scratch noise elimination etc). Ideally you need something like https://krisp.ai/ or https://workspaceupdates.googleblog.com/2021/06/background-n... in the mix - but doing this in an E2EE-friendly and privacy preserving manner is Hard. However, just like we solved E2EE full text search by doing it clientside and making the indexes gossipable between your clients (https://github.com/matrix-org/seshat), we'll have a go at doing something similar for this problem too. * Excellent automatic gain control. The importance of normalising/compressing everyone's audio so they're equivalent loudness is really important. We're also in the process of adding in spatial audio (unsure if Discord has that) which should help a tonne with distinguishing the different audio feeds. We can probably also be more bullish about supporting new audio codecs like Lyra. EDIT: oh, the other obvious thing is echo cancellation - but we're currently at the mercy of the browser's WebRTC stack for that. However, we could ship a tweaked WebRTC in Element Desktop (or other native Matrix clients) in future to do better than plain old WebRTC.

In Native Matrix VoIP with Element Call

tulir·Jan 21, 2021

Messages are stored in encrypted form on the Beeper server and the Beeper client has a local search index (the same one used by Element desktop: https://github.com/matrix-org/seshat)

In Show HN: Beeper – All Your Chats in One App

Arathorn·Dec 20, 2019

1a: Yes. the second we have parity, we'll start turning it on by default for private rooms. We'll probably start with DMs, and we'll probably do a fairly soft roll-out to sneak in some final testing. Current status is that we have E2E Search working (github.com/matrix-org/seshat); we have E2E cross-signing almost done (https://dashboard.lant.uk/#/plan?epic=vector-im/user-stories... we have eyes on the remaining causes of undecryptable messages and are working through them. We're aiming for Jan. 3: Interesting. It could be a very temporary CPU saturation on the Matrix.org CPU master. We're working on sharding the master per-room to mitigate this, but it's going to be a few months to land. 4: Looks like there is a bug for this already - please upvote https://github.com/vector-im/riot-web/issues/10649. Testing & reporting bugs is absolut

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ely invaluable - thank you.

In Synchronous Messaging at Mozilla: The Decision