When Should The Change Buffer Be Used?

1.	When Should The Change Buffer Be Used?
Answer» The change buffer is a feature designed to reduce random I/O to secondary indexes as indexes grow larger and no longer fit in the INNODB buffer POOL. Generally, the change buffer should be used when the entire data set does not fit into the buffer pool, when there is substantial DML activity that modifies secondary index PAGES, or when there are LOTS of secondary indexes that are regularly changed by DML activity. The change buffer is a feature designed to reduce random I/O to secondary indexes as indexes grow larger and no longer fit in the InnoDB buffer pool. Generally, the change buffer should be used when the entire data set does not fit into the buffer pool, when there is substantial DML activity that modifies secondary index pages, or when there are lots of secondary indexes that are regularly changed by DML activity.

Answer»

The change buffer is a feature designed to reduce random I/O to secondary indexes as indexes grow larger and no longer fit in the INNODB buffer POOL. Generally, the change buffer should be used when the entire data set does not fit into the buffer pool, when there is substantial DML activity that modifies secondary index PAGES, or when there are LOTS of secondary indexes that are regularly changed by DML activity.

The change buffer is a feature designed to reduce random I/O to secondary indexes as indexes grow larger and no longer fit in the InnoDB buffer pool. Generally, the change buffer should be used when the entire data set does not fit into the buffer pool, when there is substantial DML activity that modifies secondary index pages, or when there are lots of secondary indexes that are regularly changed by DML activity.

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