1. A method for read request bypassing a last level cache which interfaces with an external fabric, the method comprising: accessing a read request for a read transaction; generating a phantom read transaction identifier for said read transaction; and forwarding said read transaction with said phantom read transaction identifier beyond a last level cache before detection of a hit or a miss with respect to said read transaction, wherein said read transaction that is forwarded beyond said last level cache is canceled if said read transaction is a hit in said last level cache or does not access said last level cache, and wherein said phantom read transaction identifier is converted to a pointer to a real read transaction identifier if said read transaction is a miss in said last level cache.