Limit complex rooms

[melroy89]

Description:

If some reason Dendrite don't perform well on large and larger rooms. There is no way to limit the joins of complex room (by defining a room_complexity value) in Dendrite yml file.

This feature helps home servers owners to better control the usage/performance of the server.

[Half-Shot]

We should consider this carefully, room complexity is a synapse feature rather than a specced one which means we shouldn't rush to support it in favour of devising a spec.

[erkinalp]

MSC filed: matrix-org/matrix-spec-proposals#3053

[kegsay]

We would rather just making joining rooms less expensive and faster.

[erkinalp]

@kegsay should have been closed as "not planned"

[melroy89]

As long as Dendrite still have impact on very large rooms. I can't provide my server to the public, without me having the opportunity to limit users to join too complex rooms.

We would rather just making joining rooms less expensive and faster.

I understand, for the long term. But even then this option would still be handy to have in Dendrite, even if you fix the impact on large rooms.