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# 15 What's new in Zabbix 6.4.10

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#### TimescaleDB 2.13 support

Support for TimescaleDB version 2.13 is now available.

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#### User macro support in preprocessing custom error-handling parameters

User macros are now supported in item value preprocessing custom error-handling parameters (*Set value to* and *Set error to* fields).

Although undocumented, this functionality worked before Zabbix 6.4.0, but it stopped working in previous 6.4.x versions. Now the support has been restored and documented.

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## Plugins

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#### Cache mode parameter for PostgreSQL plugin

New parameters for controlling the cache mode by default or on session name level have been added to the PostgreSQL plugin [configuration](/manual/appendix/config/zabbix_agent2_plugins/postgresql_plugin#parameters):

-   `Plugins.PostgreSQL.Default.CacheMode`
-   `Plugins.PostgreSQL.Sessions.<SessionName>.CacheMode`

The cache mode parameter may have one of two allowed values: *prepare* (default) or *describe*. Note that "describe" is primarily useful when the environment does not allow prepared statements such as when running a connection pooler like PgBouncer.

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