# IServerMessenger

Broadcasts distributed cache notifications to all servers of a load balanced environment.\
Also ensures that the notification is processed on the local environment.

For a specified [ICacheRefresher](/umbraco-cms/18.latest/extend-your-project/server-side-extensions/cache/icacherefresher.md), the implemented methods will:

* Notify the distributed cache
* Invalidate specified items
* Notify all servers of specified items removal
* Notify all servers of invalidation of a object
* Notify all servers of a global invalidation (clear the complete cache)


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