Implementación de la estrategia Two Phase Commit (2PC) en ambientes distribuidos

Abstract

The management of transactions in information systems is the biggest challenge that has arisen within the business logic of applications. A transaction from the user's perspective is considered as a single event of change that may or may not occur. Developers see a transaction as a programming style that allows them to write modules that can be parlayed into distributed calculations. The transactions group a series of operations so that it is possible to guarantee the integrity of the final result. 0 all operations are executed successfully and are confirmed (written to the database), or the entire transaction is considered unrealized. The action of canceling a transaction is called reversing the transaction, which allows you to cancel the changes and recover the status of the database prior to the transaction. Transactions can involve multiple records, multiple relationships, and even multiple databases. All operations on a data basis are transactions, even updating a single existing record is a transaction. These low-level transactions are performed by the database engine transparently and you can usually ignore this level of detail.