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Full Atomicity, Consistency, Isolation, Durability (ACID) compliance is a necessity for a new application, which heavily reads and writes data. This requires the following config file options: Sync_binlog=1 Innodb_flush_log_at_trx_commit=1 Innodb_doublewrite=1 However, this configuration is expected to introduce disk I/O overhead. What three changes will reduce disk I/O overheads?（）
发布日期：2020-04-10
Use of soft links for database directories on the same physical disk
Use of delay_key_write=ON for batch index update
Allocation of RAM to the buffer pool such that more of the data can fit in RAM
Placement of InnoDB log files and datadir on separate physical disks
Use of separate directories on the same physical disk for log files and data files
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