This should transactional snapshot isolation for `/sync` etc requests.
For now we don't use repeatable read due to some odd test failures with
invites.
* Only load members of newly joined rooms
* Comment that the query is prepared at runtime
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
* Use filter and limit presence count
* More limiting
* More limiting
* Fix unit test
* Also limit presence by last_active_ts
* Update query, use "from" as the initial lastPos
* Get 1000 presence events, they are filtered later
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
* Don't create fictitious presence entries for users that don't have any
* Update whitelist, since that test probably shouldn't be passing
* Fix panics
