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matrix-org
rust-synapse-compress-state
Rust2023–2025
matrix-org / rust-synapse-compress-state

rust-synapse-compress-state

A tool to compress some state in a Synapse instance's database

4Distinct people
5Mentions
0Explicit recommenders
177GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

A tool to compress some state in a Synapse instance's database

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 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 month5 dated mentions

Observed mentions: 2023-07-31 04:25:05 UTC to 2025-12-24 17:35:11 UTC.

0122023-07-01 00:00:00 UTC to 2023-08-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsJul 20232023-08-01 00:00:00 UTC to 2023-09-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2023-09-01 00:00:00 UTC to 2023-10-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2023-10-01 00:00:00 UTC to 2023-11-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2023-11-01 00:00:00 UTC to 2023-12-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2023-12-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-01-01 00:00:00 UTC to 2024-02-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-02-01 00:00:00 UTC to 2024-03-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-03-01 00:00:00 UTC to 2024-04-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-04-01 00:00:00 UTC to 2024-05-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-05-01 00:00:00 UTC to 2024-06-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-06-01 00:00:00 UTC to 2024-07-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-07-01 00:00:00 UTC to 2024-08-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-08-01 00:00:00 UTC to 2024-09-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-09-01 00:00:00 UTC to 2024-10-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 commentsSep 20242024-10-01 00:00:00 UTC to 2024-11-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-11-01 00:00:00 UTC to 2024-12-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-12-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-01-01 00:00:00 UTC to 2025-02-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-01 00:00:00 UTC to 2025-03-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-01 00:00:00 UTC to 2025-04-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-04-01 00:00:00 UTC to 2025-05-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-05-01 00:00:00 UTC to 2025-06-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-06-01 00:00:00 UTC to 2025-07-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-07-01 00:00:00 UTC to 2025-08-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-08-01 00:00:00 UTC to 2025-09-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-09-01 00:00:00 UTC to 2025-10-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2025-10-01 00:00:00 UTC to 2025-11-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-11-01 00:00:00 UTC to 2025-12-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-12-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 commentsDec 2025

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

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
Jul 20232023-07-01 00:00:00 UTC2023-08-01 00:00:00 UTC101
Aug 20232023-08-01 00:00:00 UTC2023-09-01 00:00:00 UTC000
Sep 20232023-09-01 00:00:00 UTC2023-10-01 00:00:00 UTC101
Oct 20232023-10-01 00:00:00 UTC2023-11-01 00:00:00 UTC000
Nov 20232023-11-01 00:00:00 UTC2023-12-01 00:00:00 UTC000
Dec 20232023-12-01 00:00:00 UTC2024-01-01 00:00:00 UTC000
Jan 20242024-01-01 00:00:00 UTC2024-02-01 00:00:00 UTC000
Feb 20242024-02-01 00:00:00 UTC2024-03-01 00:00:00 UTC000
Mar 20242024-03-01 00:00:00 UTC2024-04-01 00:00:00 UTC000
Apr 20242024-04-01 00:00:00 UTC2024-05-01 00:00:00 UTC000
May 20242024-05-01 00:00:00 UTC2024-06-01 00:00:00 UTC000
Jun 20242024-06-01 00:00:00 UTC2024-07-01 00:00:00 UTC000
Jul 20242024-07-01 00:00:00 UTC2024-08-01 00:00:00 UTC000
Aug 20242024-08-01 00:00:00 UTC2024-09-01 00:00:00 UTC000
Sep 20242024-09-01 00:00:00 UTC2024-10-01 00:00:00 UTC000
Oct 20242024-10-01 00:00:00 UTC2024-11-01 00:00:00 UTC000
Nov 20242024-11-01 00:00:00 UTC2024-12-01 00:00:00 UTC000
Dec 20242024-12-01 00:00:00 UTC2025-01-01 00:00:00 UTC000
Jan 20252025-01-01 00:00:00 UTC2025-02-01 00:00:00 UTC000
Feb 20252025-02-01 00:00:00 UTC2025-03-01 00:00:00 UTC000
Mar 20252025-03-01 00:00:00 UTC2025-04-01 00:00:00 UTC000
Apr 20252025-04-01 00:00:00 UTC2025-05-01 00:00:00 UTC000
May 20252025-05-01 00:00:00 UTC2025-06-01 00:00:00 UTC000
Jun 20252025-06-01 00:00:00 UTC2025-07-01 00:00:00 UTC000
Jul 20252025-07-01 00:00:00 UTC2025-08-01 00:00:00 UTC000
Aug 20252025-08-01 00:00:00 UTC2025-09-01 00:00:00 UTC000
Sep 20252025-09-01 00:00:00 UTC2025-10-01 00:00:00 UTC101
Oct 20252025-10-01 00:00:00 UTC2025-11-01 00:00:00 UTC000
Nov 20252025-11-01 00:00:00 UTC2025-12-01 00:00:00 UTC000
Dec 20252025-12-01 00:00:00 UTC2026-01-01 00:00:00 UTC202

What Hacker News says

5 sources
> This is nothing to do with state resolution; it's due to Synapse's implementation deliberately cutting corners on storage efficiency while trading off for speed. It's specifically to increase the speed if *state resolution*. If it weren't for the convoluted state resolution system, there wouldn't be a need to store gigabytes worth of state groups in the database. * https://element-hq.github.io/synapse/latest/usage/administra... * https://github.com/matrix-org/rust-synapse-compress-state Maybe there's a way to calculate state without state groups, but I sure don't see one that I can use if I were to run a matrix server. > Not since https://matrix.org/blog/2025/08/project-hydra-improving-stat... Simply fixes some of the many ways that rooms can explode or be bricked. Zero confidence that room brickings are totally fixed once and for all
Read the rest
. > There are MSCs for all of these now, and implementations are starting to filter through. The reality is that the project has been in a funding crunch since 2023 and we've had to focus on survival by prioritising stuff people pay for (i.e. big servers for govtech deployments) rather than custom emoji. A funding crunch since 2023 yet those features have been necessary for many years before 2023.
In Why We Abandoned Matrix (2024)
Been selfhosting synapse for about 1.5 years in a docker compose setup using bunkerweb (formerly "bunkerized nginx", which better explains it premise) reverse proxy, eturnal for TURN and postgres, also recently added livekit and MAS for element call and element X compatibility. All that runs on a small 2vcore/4gb VPS, and it runs pretty good, I experience a server crash every half a month, but that may be caused by the fact that bunkerweb isn't the most lightweight solution (they actually require 8GB RAM minimum, so I'm already beneath the limit), and also because I run some other software (mailserver, ebook server, plex, etc..). My experience as a administrator has been pretty good, perhaps it's because from the beginning I was optimistic, it suited my needs as I wanted a selfhosted, modern and fairly convenient communication platform. F
Read the rest
rom what I recall, most problems during configuration were caused mostly by bunkerweb (or rather my inability to correctly set it up to proxy requests correctly and not hijack the 4xx and 5xx HTTP codes). Synapse itself has been a pleasure to maintain, but also bear in mind that I did not tinker with with it, I basically set it up and let it run for about a year and then added MAS and livekit. Yeah, disk usage sucks, for about 5-10 active users and 1.5 year usage my postgres "schemas" folder clocks at 10Gibs. It doesn't include the media_store catalog where synapse keeps media (images, videos). The homeserver is federated and I joined a couple of big rooms in the past. Mechanics mentioned in the links below do help though: https://matrix-org.github.io/synapse/v1.40/admin_api/purge_h... https://github.com/matrix-org/rust-synapse-compress-state Clientwise also sucks, but I think enough has already been said on this matter. But it's good enough to keep my nontechnical friends using it. They do hate it, but not enough to kick me in the arse. Would love to say that this proves that element clientside is usable, but I also have to admit that my friends are just hella good guys who would even write pigeon mail to me if I stopped using anything else for communication :) for me as a techie, element is obviously alright. Clunky, but works. I think clients simply need more time. What irritates me is the Matrix authentication service (MAS), it's kind of a separate service for matrix homeservers that handles logins specifficaly. You can't use element X without it. However when it's enabled, you cannot log in from your client, instead a web browser opens and shows the login panel where you have to authorize, and then it should return to the client. Except in my case it simply doesn't :( I observed that for some reason chromium based browsers won't redirect back to the element app, and it doesn't know that the authorization has been granted. I managed to bypass it by copying the URL and opening it on firefox, but in one instance even that didn't work. But other than that MAS problems everything has been fine from administration standpoint. I think it simply needs more time, as it already has traction, I see that a lot of new projects seem to include a matrix room in their social/communication channels, frequently it's the only option besides the bugtracker. And I'm willing to wait patiently :) edit: added links for people who also struggle with disk space usage
In Self-hosting a Matrix server for 5 years
Yup, it's true that sliding sync proxy increases disk space further, although it's not so bad. A big advantage once it's stable and merged into a native homeserver will be reducing the storage duplication between the proxy and the HS. Meanwhile, we really need to get https://github.com/matrix-org/rust-synapse-compress-state/pu... hooked up in Synapse so that it automatically compresses state; I don't know why this never landed when it was written in in 2021 :(
In Matrix 2.0: The Future of Matrix

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