Non-Blocking Commit Protocol

摘要

Despite all the drawbacks of 2-Phase Commit Protocol (2PC), like blocking, its high cost of logging and number of messages; it is supported by all commercial database systems and has been standardised by ISO and X/Open. Many other variants are proposed in this line but the blocking problem remains the same in all and alternatives are available at high cost and time also. In this paper we will propose a Non-Blocking Commit Protocol (NBCP) which survives the coordinator and participant failure and not even increases the cost of execution and time with the help of low cost main memory.