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jynus
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About

My name is Jaime Crespo and I am a former MySQL/Sun/Oracle/Percona instructor and consultant.

I work as a MySQL DBA for the Wikimedia Foundation, mostly interested in query optimization and architectures for HA (Galera, NDB). On my free time I try to help a bit here.

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62
MySQL - varchar length and performance
Sep 13, 2014
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48
What is mysql_native_password?
Jun 13, 2018
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29
MySQL: Which join is better between left outer join and inner join
Aug 4, 2014
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26
Difference between transaction log and redo log in MySQL
Aug 1, 2014
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20
What's the difference between MySQL Fabric and MySQL Cluster
Oct 11, 2014
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16
What is InnoDB Buffer Usage and how to clear it?
Mar 5, 2015
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15
How to set MySQL binlog retention in hours?
May 13, 2018
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15
Benefits of Barracuda and Compression
Jul 5, 2014
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15
Using mysql's load infile to only populate certain columns
Jul 4, 2014
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12
MariaDB - "ERROR 1205 ... Lock wait timeout exceeded; ..." when doing multiple parallel UPDATEs affecting different rows
May 9, 2018
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Why are users correcting my British English answers to the American spelling?
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How do I identify slow queries missing an index?