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Displaying posts with tag: index lookup (reset)

Dec

2011

Slides of my talk on B+Tree Indexes and InnoDB

Posted by Ovais Tariq on Sun 18 Dec 2011 07:58 UTC
Tags:

indexing, innodb, Presentation, clustered indexes, slides, covering index, B+Tree, B-Tree, percona live, innodb indexes, secondary index, MySQL, Performance, primary index, index lookup, index pages, index tree, composite index

The slides of my talk on B+Tree Indexes and InnoDB are now available for download. This slide was presented during Percona Live London 2011. You can download the slides from here.
There are many other interesting and informative talks that were presented during Percona Live London 2011, and I think you should definitely check them out, if you haven't. They are available here.

The post Slides of my talk on B+Tree Indexes and InnoDB appeared first on ovais.tariq.

Jul

2011

On Covering Indexes and Their Impact on Performance

Posted by Ovais Tariq on Sun 03 Jul 2011 19:36 UTC
Tags:

indexing, innodb, optimization, explain, indexes, unique index, covering index, inserts, mysql resources, updates, MySQL, Performance, 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.

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