Flush

Mon, 01 Jan 0001 00:00:00 +0000

FLUSH TABLES

FLUSH LOGS;
FLUSH TABLES WITH READ LOCK;
UNLOCK TABLES;

Transaction => Binlog Flush

innodb_flush_log_at_trx_commit=1

The default value of 1 is required for full ACID compliance. With this value, the log buffer is written out to the log file at each transaction commit and the flush to disk operation is performed on the log file.

innodb_flush_log_at_trx_commit=0

With a value of 0, any mysqld process crash can erase the last second of transactions. The log buffer is written out to the log file once per second and the flush to disk operation is performed on the log file, but nothing is done at a transaction commit.

FLUSH on it-grossniklaus.ch

Flush

FLUSH TABLES

Transaction => Binlog Flush