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In uSync a Handler manages the reading and writing of the uSync Settings from the physical disk of the installation.

Handlers don't do the actual importing or exporting of items that work is done by the Serializers.

Handler Groups

Handlers are grouped within the main uSync.Config file - these groups allow you (and other uSync tools) to use diffrent sets of handlers depending on the groups.

<Handlers Name="default">
 <Handler Alias="dataTypeHandler" Enabled="true" Actions="All" />
 <Handler Alias="languageHandler" Enabled="true" Actions="All" />
 <Handler Alias="macroHandler" Enabled="true" Actions="All" />
 <Handler Alias="memberTypeHandler" Enabled="true" Actions="All" />
 <Handler Alias="templateHandler" Enabled="true" Actions="All" />
 <Handler Alias="contentTypeHandler" Enabled="true" Actions="All" />


Property Values Notes
Enabled true/false Turns this handler on or off within the handler group
Actions All,Import,Export,Report Turns the handler on or off for specific actions, by default all handlers are on for all actions

Handler Specific settings,

Handlers can have their own settings, which can control specific behaviors based on the handler, for example Content Handlers can have Include and Exclude settings that limit exports to certain content paths.

These settings take the form of an extra Add value underneath the hancdler e.g.`

<Handler Alias="contentTypeHandler" Enabled="true" Actions="All">
    <Add Key="CreateOnly" Value="true" />

Global settings

The following settings work for all handlers


uSync 8.7+ only

Key Values Note
CreateOnly True/False Items are created if they do not exist, but existing items are not synced.
IgnoreAliases String List of aliases of items you don't want the handler to import.

Handler specific settings

For more info see the specific handler docs.

Handler Key Value Note
Content/Media Include Content Path See Content Handler Documentation
Exclude Content Path
RulesOnExport True / False
Dictionary OneWay True/False legacy same as CreateOnly see Dictionay Handler documentation for more info
DataTypes NoConfigNames String List of datatypes by name that you don't want to import the configuration for.
NoConfigEditors String List of editor aliases of items you don't want the configuration to be imported for.


Items get to disk in one of two ways; either a user triggers an export via the uSync dashboard or uSync detects a change and triggers a single export of an item.

Handlers listen for the save/delete/move events and trigger exports when things change


Depending on settings, handlers can import settings either at startup of your site or when you trigger an import via the uSync dashboard.

Forced Import

Typically an import will only attempt to update items that have changed, this is for both speed and consistency - you can however force an import which will update all items regardless of if they have changed or not since the last import.