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129 lines
7 KiB
Markdown
129 lines
7 KiB
Markdown
# Dendrite
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[](https://github.com/matrix-org/dendrite/actions/workflows/dendrite.yml) [](https://matrix.to/#/#dendrite:matrix.org) [](https://matrix.to/#/#dendrite-dev:matrix.org)
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Dendrite is a second-generation Matrix homeserver written in Go.
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It intends to provide an **efficient**, **reliable** and **scalable** alternative to [Synapse](https://github.com/matrix-org/synapse):
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- Efficient: A small memory footprint with better baseline performance than an out-of-the-box Synapse.
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- Reliable: Implements the Matrix specification as written, using the
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[same test suite](https://github.com/matrix-org/sytest) as Synapse as well as
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a [brand new Go test suite](https://github.com/matrix-org/complement).
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- Scalable: can run on multiple machines and eventually scale to massive homeserver deployments.
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As of October 2020 (current [progress below](#progress)), Dendrite has now entered **beta** which means:
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- Dendrite is ready for early adopters. We recommend running in Monolith mode with a PostgreSQL database.
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- Dendrite has periodic semver releases. We intend to release new versions as we land significant features.
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- Dendrite supports database schema upgrades between releases. This means you should never lose your messages when upgrading Dendrite.
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- Breaking changes will not occur on minor releases. This means you can safely upgrade Dendrite without modifying your database or config file.
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This does not mean:
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- Dendrite is bug-free. It has not yet been battle-tested in the real world and so will be error prone initially.
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- Dendrite is feature-complete. There may be client or federation APIs that are not implemented.
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- Dendrite is ready for massive homeserver deployments. You cannot shard each microservice, only run each one on a different machine.
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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.
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In the future, we will be able to scale up to gigantic servers (equivalent to matrix.org) via polylith mode.
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If you have further questions, please take a look at [our FAQ](docs/FAQ.md) or join us in:
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- **[#dendrite:matrix.org](https://matrix.to/#/#dendrite:matrix.org)** - General chat about the Dendrite project, for users and server admins alike
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- **[#dendrite-dev:matrix.org](https://matrix.to/#/#dendrite-dev:matrix.org)** - The place for developers, where all Dendrite development discussion happens
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- **[#dendrite-alerts:matrix.org](https://matrix.to/#/#dendrite-alerts:matrix.org)** - Release notifications and important info, highly recommended for all Dendrite server admins
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## Requirements
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See the [Planning your Installation](https://matrix-org.github.io/dendrite/installation/planning) page for
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more information on requirements.
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To build Dendrite, you will need Go 1.18 or later.
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For a usable federating Dendrite deployment, you will also need:
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- A domain name (or subdomain)
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- A valid TLS certificate issued by a trusted authority for that domain
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- SRV records or a well-known file pointing to your deployment
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Also recommended are:
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- A PostgreSQL database engine, which will perform better than SQLite with many users and/or larger rooms
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- A reverse proxy server, such as nginx, configured [like this sample](https://github.com/matrix-org/dendrite/blob/master/docs/nginx/monolith-sample.conf)
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The [Federation Tester](https://federationtester.matrix.org) can be used to verify your deployment.
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## Get started
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If you wish to build a fully-federating Dendrite instance, see [the Installation documentation](https://matrix-org.github.io/dendrite/installation). For running in Docker, see [build/docker](build/docker).
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The following instructions are enough to get Dendrite started as a non-federating test deployment using self-signed certificates and SQLite databases:
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```bash
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$ git clone https://github.com/matrix-org/dendrite
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$ cd dendrite
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$ ./build.sh
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# Generate a Matrix signing key for federation (required)
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$ ./bin/generate-keys --private-key matrix_key.pem
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# Generate a self-signed certificate (optional, but a valid TLS certificate is normally
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# needed for Matrix federation/clients to work properly!)
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$ ./bin/generate-keys --tls-cert server.crt --tls-key server.key
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# Copy and modify the config file - you'll need to set a server name and paths to the keys
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# at the very least, along with setting up the database connection strings.
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$ cp dendrite-sample.monolith.yaml dendrite.yaml
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# Build and run the server:
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$ ./bin/dendrite-monolith-server --tls-cert server.crt --tls-key server.key --config dendrite.yaml
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# Create an user account (add -admin for an admin user).
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# Specify the localpart only, e.g. 'alice' for '@alice:domain.com'
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$ ./bin/create-account --config dendrite.yaml --url http://localhost:8008 --username alice
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```
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Then point your favourite Matrix client at `http://localhost:8008` or `https://localhost:8448`.
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## Progress
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We use a script called Are We Synapse Yet which checks Sytest compliance rates. Sytest is a black-box homeserver
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test rig with around 900 tests. The script works out how many of these tests are passing on Dendrite and it
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updates with CI. As of August 2022 we're at around 90% CS API coverage and 95% Federation coverage, though check
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CI for the latest numbers. In practice, this means you can communicate locally and via federation with Synapse
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servers such as matrix.org reasonably well, although there are still some missing features (like Search).
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We are prioritising features that will benefit single-user homeservers first (e.g Receipts, E2E) rather
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than features that massive deployments may be interested in (OpenID, Guests, Admin APIs, AS API).
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This means Dendrite supports amongst others:
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- Core room functionality (creating rooms, invites, auth rules)
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- Room versions 1 to 10 supported
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- Backfilling locally and via federation
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- Accounts, profiles and devices
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- Published room lists
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- Typing
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- Media APIs
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- Redaction
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- Tagging
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- Context
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- E2E keys and device lists
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- Receipts
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- Push
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- Guests
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- User Directory
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- Presence
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## Contributing
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We would be grateful for any help on issues marked as
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[Are We Synapse Yet](https://github.com/matrix-org/dendrite/labels/are-we-synapse-yet). These issues
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all have related Sytests which need to pass in order for the issue to be closed. Once you've written your
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code, you can quickly run Sytest to ensure that the test names are now passing.
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If you're new to the project, see our
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[Contributing page](https://matrix-org.github.io/dendrite/development/contributing) to get up to speed, then
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look for [Good First Issues](https://github.com/matrix-org/dendrite/labels/good%20first%20issue). If you're
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familiar with the project, look for [Help Wanted](https://github.com/matrix-org/dendrite/labels/help-wanted)
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issues.
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