Dendrite is a second-generation Matrix homeserver written in Go!
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Till eb29a31550
Optimize /sync and history visibility (#2961)
Should fix the following issues or make a lot less worse when using
Postgres:

The main issue behind #2911: The client gives up after a certain time,
causing a cascade of context errors, because the response couldn't be
built up fast enough. This mostly happens on accounts with many rooms,
due to the inefficient way we're getting recent events and current state

For #2777: The queries for getting the membership events for history
visibility were being executed for each room (I think 185?), resulting
in a whooping 2k queries for membership events. (Getting the
statesnapshot -> block nids -> actual wanted membership event)

Both should now be better by:
- Using a LATERAL join to get all recent events for all joined rooms in
one go (TODO: maybe do the same for room summary and current state etc)
- If we're lazy loading on initial syncs, we're now not getting the
whole current state, just to drop the majority of it because we're lazy
loading members - we add a filter to exclude membership events on the
first call to `CurrentState`.
- Using an optimized query to get the membership events needed to
calculate history visibility

---------

Co-authored-by: kegsay <kegan@matrix.org>
2023-02-07 14:31:23 +01:00
.github Add Sytest/Complement coverage to scheduled runs (#2962) 2023-02-03 13:42:35 +01:00
appservice Use test.WithAllDatabases 2022-12-05 16:00:02 +01:00
build Add max frame size to pinecone bindings 2023-02-04 06:05:39 -07:00
clientapi Add Sytest/Complement coverage to scheduled runs (#2962) 2023-02-03 13:42:35 +01:00
cmd Consolidate pinecone demo http server variations 2023-02-01 14:11:48 -07:00
docs Bump activesupport from 6.0.5 to 6.0.6.1 in /docs (#2959) 2023-02-02 10:27:38 +01:00
federationapi Relay integration to pinecone demos (#2955) 2023-01-28 23:27:53 +00:00
helm Version 0.11.0 (#2949) 2023-01-20 16:20:01 +01:00
internal Added Landing Page (#2885) 2023-01-26 16:25:17 +01:00
keyserver Cleanup stale device lists for users we don't share a room with anymore (#2857) 2022-12-12 08:20:59 +01:00
mediaapi Initial Store & Forward Implementation (#2917) 2023-01-23 17:55:12 +00:00
relayapi Remove nolint: gocyclo from relayapi routing setup 2023-02-01 13:41:37 -07:00
roomserver Optimize /sync and history visibility (#2961) 2023-02-07 14:31:23 +01:00
setup Relay integration to pinecone demos (#2955) 2023-01-28 23:27:53 +00:00
syncapi Optimize /sync and history visibility (#2961) 2023-02-07 14:31:23 +01:00
test Relay integration to pinecone demos (#2955) 2023-01-28 23:27:53 +00:00
userapi Pushrule tweaks, make pattern non-optional on EventMatchCondition (#2918) 2022-12-23 12:52:47 +01:00
.dockerignore Docker Hub (#1053) 2020-05-21 13:02:28 +01:00
.gitignore Initial Store & Forward Implementation (#2917) 2023-01-23 17:55:12 +00:00
.golangci.yml Increase gocyclo complexity to 25 (and remove all but 2 golint directives related to it) (#1783) 2021-03-03 14:35:57 +00:00
are-we-synapse-yet.list AWSY missing federation tests (#2943) 2023-01-20 15:18:06 +01:00
are-we-synapse-yet.py Add Are We Synapse Yet to GHA (#2321) 2022-04-05 15:32:30 +02:00
build-dendritejs.sh Add startup testing for Wasm Pinecone build (#1910) 2021-07-20 12:14:58 +01:00
build.cmd build.sh to build.cmd (#2319) 2022-04-05 11:27:29 +01:00
build.sh Disable WebAssembly builds for now 2022-07-01 09:50:06 +01:00
CHANGES.md Version 0.11.0 (#2949) 2023-01-20 16:20:01 +01:00
dendrite-sample.monolith.yaml Add hcaptcha support besides Google ReCaptcha (#2834) 2022-10-28 11:25:01 +01:00
dendrite-sample.polylith.yaml Add hcaptcha support besides Google ReCaptcha (#2834) 2022-10-28 11:25:01 +01:00
Dockerfile Add curl to dendrite docker containers 2023-01-06 11:49:59 -07:00
go.mod Update gmsl dependency 2023-01-31 12:49:47 -07:00
go.sum Update gmsl dependency 2023-01-31 12:49:47 -07:00
LICENSE Add Apache Version 2.0 license and headers to all golang files 2017-04-21 00:40:52 +02:00
README.md Update README 2022-10-07 07:32:27 +02:00
run-sytest.sh Use /usr/bin/env bash in shebangs to make them universal (#2735) 2022-09-27 09:42:08 +01:00
show-expected-fail-tests.sh Use /usr/bin/env bash in shebangs to make them universal (#2735) 2022-09-27 09:42:08 +01:00
sytest-blacklist Use t.TempDir for SQLite databases, so tests don't rip out each others databases (#2950) 2023-01-23 13:17:15 +01:00
sytest-whitelist Use t.TempDir for SQLite databases, so tests don't rip out each others databases (#2950) 2023-01-23 13:17:15 +01:00
test-dendritejs.sh Add startup testing for Wasm Pinecone build (#1910) 2021-07-20 12:14:58 +01:00

Dendrite

Build status Dendrite Dendrite Dev

Dendrite is a second-generation Matrix homeserver written in Go. It intends to provide an efficient, reliable and scalable alternative to Synapse:

  • Efficient: A small memory footprint with better baseline performance than an out-of-the-box Synapse.
  • Reliable: Implements the Matrix specification as written, using the same test suite as Synapse as well as a brand new Go test suite.
  • Scalable: can run on multiple machines and eventually scale to massive homeserver deployments.

Dendrite is beta software, which means:

  • Dendrite is ready for early adopters. We recommend running in Monolith mode with a PostgreSQL database.
  • Dendrite has periodic releases. We intend to release new versions as we fix bugs and land significant features.
  • Dendrite supports database schema upgrades between releases. This means you should never lose your messages when upgrading Dendrite.

This does not mean:

  • Dendrite is bug-free. It has not yet been battle-tested in the real world and so will be error prone initially.
  • Dendrite is feature-complete. There may be client or federation APIs that are not implemented.
  • Dendrite is ready for massive homeserver deployments. There is no sharding of microservices (although it is possible to run them on separate machines) and there is no high-availability/clustering support.

Currently, we expect Dendrite to function well for small (10s/100s of users) homeserver deployments as well as P2P Matrix nodes in-browser or on mobile devices. In the future, we will be able to scale up to gigantic servers (equivalent to matrix.org) via polylith mode.

If you have further questions, please take a look at our FAQ or join us in:

Requirements

See the Planning your Installation page for more information on requirements.

To build Dendrite, you will need Go 1.18 or later.

For a usable federating Dendrite deployment, you will also need:

  • A domain name (or subdomain)
  • A valid TLS certificate issued by a trusted authority for that domain
  • SRV records or a well-known file pointing to your deployment

Also recommended are:

  • A PostgreSQL database engine, which will perform better than SQLite with many users and/or larger rooms
  • A reverse proxy server, such as nginx, configured like this sample

The Federation Tester can be used to verify your deployment.

Get started

If you wish to build a fully-federating Dendrite instance, see the Installation documentation. For running in Docker, see build/docker.

The following instructions are enough to get Dendrite started as a non-federating test deployment using self-signed certificates and SQLite databases:

$ git clone https://github.com/matrix-org/dendrite
$ cd dendrite
$ ./build.sh

# Generate a Matrix signing key for federation (required)
$ ./bin/generate-keys --private-key matrix_key.pem

# Generate a self-signed certificate (optional, but a valid TLS certificate is normally
# needed for Matrix federation/clients to work properly!)
$ ./bin/generate-keys --tls-cert server.crt --tls-key server.key

# Copy and modify the config file - you'll need to set a server name and paths to the keys
# at the very least, along with setting up the database connection strings.
$ cp dendrite-sample.monolith.yaml dendrite.yaml

# Build and run the server:
$ ./bin/dendrite-monolith-server --tls-cert server.crt --tls-key server.key --config dendrite.yaml

# Create an user account (add -admin for an admin user).
# Specify the localpart only, e.g. 'alice' for '@alice:domain.com'
$ ./bin/create-account --config dendrite.yaml --username alice

Then point your favourite Matrix client at http://localhost:8008 or https://localhost:8448.

Progress

We use a script called Are We Synapse Yet which checks Sytest compliance rates. Sytest is a black-box homeserver test rig with around 900 tests. The script works out how many of these tests are passing on Dendrite and it updates with CI. As of August 2022 we're at around 90% CS API coverage and 95% Federation coverage, though check CI for the latest numbers. In practice, this means you can communicate locally and via federation with Synapse servers such as matrix.org reasonably well, although there are still some missing features (like SSO and Third-party ID APIs).

We are prioritising features that will benefit single-user homeservers first (e.g Receipts, E2E) rather than features that massive deployments may be interested in (OpenID, Guests, Admin APIs, AS API). This means Dendrite supports amongst others:

  • Core room functionality (creating rooms, invites, auth rules)
  • Room versions 1 to 10 supported
  • Backfilling locally and via federation
  • Accounts, profiles and devices
  • Published room lists
  • Typing
  • Media APIs
  • Redaction
  • Tagging
  • Context
  • E2E keys and device lists
  • Receipts
  • Push
  • Guests
  • User Directory
  • Presence
  • Fulltext search

Contributing

We would be grateful for any help on issues marked as Are We Synapse Yet. These issues all have related Sytests which need to pass in order for the issue to be closed. Once you've written your code, you can quickly run Sytest to ensure that the test names are now passing.

If you're new to the project, see our Contributing page to get up to speed, then look for Good First Issues. If you're familiar with the project, look for Help Wanted issues.