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Version 0.4.0
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# Changelog
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## Dendrite 0.4.0 (2021-07-12)
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### Features
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* All-new state storage in the roomserver, which dramatically reduces disk space utilisation
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* State snapshots and blocks are now aggressively deduplicated and reused wherever possible, with state blocks being reduced by up to 15x and snapshot references being reduced up to 2x
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* Dendrite will upgrade to the new state storage automatically on the first run after upgrade, although this may take some time depending on the size of the state storage
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* Appservice support has been improved significantly, with many bridges now working correctly with Dendrite
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* Events are now correctly sent to appservices based on room memberships
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* Aliases and namespaces are now handled correctly, calling the appservice to query for aliases as needed
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* Appservice user registrations are no longer being subject to incorrect validation checks
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* Shared secret registration has now been implemented correctly
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* The roomserver input API implements a new queuing system to reduce backpressure across rooms
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* Checking if the local server is in a room has been optimised substantially, reducing CPU usage
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* State resolution v2 has been optimised further by improving the power level checks, reducing CPU usage
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* The federation API `/send` endpoint now deduplicates missing auth and prev events more aggressively to reduce memory usage
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* The federation API `/send` endpoint now uses workers to reduce backpressure across rooms
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* The bcrypt cost for password storage is now configurable with the `user_api.bcrypt_cost` option
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* The federation API will now use significantly less memory when calling `/get_missing_events`
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* MSC2946 Spaces endpoints have been updated to stable endpoint naming
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* The media API can now be configured without a maximum file size
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* A new `dendrite-upgrade-test` test has been added for verifying database schema upgrades across versions
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* Added Prometheus metrics for roomserver backpressure, excessive device list updates and federation API event processing summaries
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* Sentry support has been added for error reporting
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### Fixes
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* Removed the legacy `/v1` register endpoint. Dendrite only implements `/r0` of the CS API, and the legacy `/v1` endpoint had implementation errors which made it possible to bypass shared secret registration (thanks to Jakob Varmose Bentzen for reporting this)
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* Attempting to register an account that already exists now returns a sensible error code rather than a HTTP 500
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* Dendrite will no longer attempt to `/make_join` with itself if listed in the request `server_names`
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* `/sync` will no longer return immediately if there is nothing to sync, which happened particularly with new accounts, causing high CPU usage
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* Malicious media uploads can no longer exhaust all available memory (contributed by [S7evinK](https://github.com/S7evinK))
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* Selecting one-time keys from the database has been optimised (contributed by [S7evinK](https://github.com/S7evinK))
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* The return code when trying to fetch missing account data has been fixed (contributed by [adamgreig](https://github.com/adamgreig))
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* Dendrite will no longer attempt to use `/make_leave` over federation when rejecting a local invite
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* A panic has been fixed in `QueryMembershipsForRoom`
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* A panic on duplicate membership events has been fixed in the federation sender
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* A panic has been fixed in in `IsInterestedInRoomID` (contributed by [S7evinK](https://github.com/S7evinK))
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* A panic in the roomserver has been fixed when handling empty state sets
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* A panic in the federation API has been fixed when handling cached events
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## Dendrite 0.3.11 (2021-03-02)
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### Fixes
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@ -16,8 +16,8 @@ var build string
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const (
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VersionMajor = 0
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VersionMinor = 3
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VersionPatch = 11
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VersionMinor = 4
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VersionPatch = 0
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VersionTag = "" // example: "rc1"
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)
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