Refresh PowerShell DSC resource

I am debugging PowerShell DSC resources that come with v4.0. More specifically, I am testing MSFT_ProcessResource by adding a diagnostic log. After I make change to the resource, and run my configuration that exercise the resource, I don't see the logging I just added. Eventually after several minutes, PowerShell seems to refresh whatever cache of resource it has. I've tried Get-DscResource, and Import-Module MSFT_ProcessResource

None of which worked.

Is there a way to force re-loading the resource?

Solution

DSC engine caches resources to increase performance.

There are two ways to reload the resource:

1) Restart process hosting DSC engine (kill WMI Provider Host and re-run the configuration)

2) Use debug mode which will cause DSC to reload resources automatically (useful when developing resources, but not recommended for regular work):

LocalConfigurationManager
{
    DebugMode = $true
}