transaction in MySQL

transaction in MySQL

When you are running eZ Publish in an environment where you want to use transactions, you must use the InnoDB storage engine in MySQL. The MyISAM storage engine is the default, but does not support transactions. (A "transaction" means that you can group a number of queries to the database and revert all of them if one fails, thus ensuring the integrity of the data.) InnoDB is more efficient than MyISAM when you have a write-intensive environment. Pure read operations are slower than with MyISAM, but when you have combinations of reads and writes InnoDB performs well.

MySQL has recently added a new storage engine type (called Falcon) that is supposed to be better than InnoDB for transaction-based web applications. We have not tested this engine and therefore cannot confirm the performance enhancement.