Internet Explorer 9 offers you the option to delete Browser Cache or Cookies for a particular domain only. While normally one either empties the entire Cookie folder or one can choose to delete expired cookies only, you can now delete cookies selectively for a particular website only. Similarly you can also delete the browser cache for a particular domain only!
To do so open IE9 and open the domain whose cache or cookies you want to clear. Now click F12. This will open the Developer Tools.
Next click on the Cache tab and from the options select Clear cookies for domain.
To clear Browser Cache for the particular domain only, select Clear browser cache for this domain. Alternatively, you can also use the hotkeys Ctrl+D to do the same.