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* Add a per-room mutex to federationapi when processing transactions This has numerous benefits: - Prevents us doing lots of state resolutions in busy rooms. Previously, room forks would always result in a state resolution being performed immediately, without checking if we were already doing this in a different transaction. Now they will queue up, resulting in fewer calls to `/state_ids`, `/g_m_e`, etc. - Prevents memory usage from growing too large as a result and potentially OOMing. And costs: - High traffic rooms will be slightly slower due to head-of-line blocking from other servers, though this has always been an issue as roomserver has a per-room mutex already. * Fix unit tests * Correct mutex lock ordering |
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| .. | ||
| caching | ||
| eventutil | ||
| hooks | ||
| httputil | ||
| sqlutil | ||
| test | ||
| transactions | ||
| consumers.go | ||
| log.go | ||
| mutex.go | ||
| version.go | ||