Unable to create Personal Site from RESTFul Service

Hi guys,

As part of a strategy for scalling out our Portal Sharepoint MySites which is over 250k mysites, we decided to create an approach which is:

1- Create a PowerShell custom Job which will run twice a month looking for unuseful mysites and remove them gradually.

2- The users which lost the mysite due custom Powershell job will be redirected into a common page for users that  does not edit their sites. It will avoid having too many mysites.

3- If the user over the common static home page decided to edit (Add new web parts, Add pages, etc) we need to create a personal mysite then.

All this is working except for the #3 which works partially.

When an user confirm its edition from a Sharepoint popup we will call a RESTFul service throught jQuery Ajax async in order to leave the service the task to create mysite while it shows a wait page upon the client side (the important thing here is the callback).

Above is the Ajax call. When this call is performed we need to assume the following:

1- The user already lost mysite due to auto-deletion from powershell script.

2- There is no personal site for this user calling the service.

3- We will create a site for the user.

So we are sure the site its not present, the rest ful function is:

This function is throwing out a PersonalSiteExistsException even when the site is not present. 

When it works:

When I recycle the application pool after deleting personal sites, the exception is not trow and the site is created properly.

I guess  there is something in the cache but I cannot realize on what is causing the exception.

Could someone guide me¡

Thanks a lot.

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