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# 17 Що нового у Zabbix 6.0.12

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### Improved performance of history syncers

The performance of history syncers has been improved by introducing a new read-write lock.
This reduces locking between history syncers, trappers and proxy pollers by using a shared read lock while accessing the configuration cache.
The new lock can be write locked only by the configuration syncer performing a configuration cache reload.

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