MySQL Performance Problems Post: 303042001

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The Lounge What is on Your Mind? MySQL Performance Problems Post 303042001 by Neo on Wednesday 11th of December 2019 12:03:53 AM

12-11-2019

Administrator

Just shaved about 200ms from the mysql query used on the user badge page for each user by adding a field in the user database to store the total tag count for each user and moving that query to a daily cron file instead of updating this in real time.

Code:

<?php
$sql = "select userid, count(1)  as tagcount  FROM tagthread group by userid order by tagcount desc";
$taginfo = $vbulletin->db->query_read($sql);
while ($tag = $vbulletin->db->fetch_array($taginfo)) {
    $sql2 = "update user set tagcount = " . $tag['tagcount'] . " where userid = " . $tag['userid'];
    $vbulletin->db->query_write($sql2);
}

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LEARN ABOUT DEBIAN

bp_meta_gff

BP_META_GFF(1p) 					User Contributed Perl Documentation					   BP_META_GFF(1p)

NAME

       bp_meta_gff.pl - Get/set Bio::DB::GFF meta-data

SYNOPSIS

	 # set the following meta data values
	 % bp_meta_gff.pl -d testdb tag1=value1 tag2=value2

	 # get the indicated meta data value
	 % bp_meta_gff.pl -d testdb tag1 tag2

DESCRIPTION

       This script gets or sets metadata in a Bio::DB::GFF database.  Not all adaptors support this operation!	To set a series of tags, pass a
       set of tag=value pairs to the script.  To get the contents of a series of tags, pass the bare tag names.

       The output from the get operation will be an easily parseable set of tag=value pairs, one per line.

COMMAND-LINE OPTIONS
       Command-line options can be abbreviated to single-letter options.  e.g. -d instead of --database.

	  --database <dsn>	Mysql database name (default dbi:mysql:test)
	  --adaptor <adaptor>	Mysql adaptor (default dbi::mysqlopt)
	  --user    <user>	Username for mysql authentication
	  --pass    <password>	Password for mysql authentication

SEE ALSO

       Bio::DB::GFF

AUTHOR

       Lincoln Stein, lstein@cshl.org

       Copyright (c) 2002 Cold Spring Harbor Laboratory

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.  See DISCLAIMER.txt for
       disclaimers of warranty.

perl v5.14.2							    2012-03-02							   BP_META_GFF(1p)