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Displaying posts with tag: disk I/O (reset)

On Covering Indexes and Their Impact on Performance
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posted by Ovais Tariq on Sun 03 Jul 2011 19:36 UTC
Tags:
(edit) mysql, indexing, innodb, performance, optimization, explain, indexes, unique index, covering index, inserts, mysql resources, updates, primary index, columns, disk I/O, index lookup, non-unique index, random read, read, reduce random read
The purpose of this post is to describe what covering indexes are and how they can be used to improve the performance of queries. People mostly use indexes to filter or sort the results but not much thought is given to actually reduce the disk reads by using proper indexes. So I will show you how to reduce disk reads and hence improve the performance of queries by utilizing indexes properly.
Showing entries 1 to 1

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