Remove the scheme for the user problem with the cache, now the login is an post-get. Cache system completed with verification of NSURLCache for search if the entity was in local cache for get the version number, so now i can use the If-None-Match header in all requests (Before i cannot because the sinopsys don't have the version number).
Cache scheme completed, using NSURLCache.
Completed the cache scheme, add range option to searchs.