MySQL中使用UDF自动同步memcached效率笔记

2022-11-12 09:23:43
内容摘要
这篇文章主要为大家详细介绍了MySQL中使用UDF自动同步memcached效率笔记,具有一定的参考价值,可以用来参考一下。 对此感兴趣的朋友,看看idc笔记做的技术笔记!接上篇:mysql使用m
文章正文

这篇文章主要为大家详细介绍了MySQL中使用UDF自动同步memcached效率笔记,具有一定的参考价值,可以用来参考一下。

对此感兴趣的朋友,看看idc笔记做的技术笔记!

接上篇:mysql使用mysql-udf-http效率测试笔记 ,这次不使用rest架构,而是使用:libmemcached和memcached_functions_mysql,测试版本是:libmemcached-0.34.tar.gz和memcached_functions_mysql-0.9.tar.gz,其它版本配对都有问题,我安装测试过有问题的版本有:

代码如下:

 
memcached_functions_mysql-1.1在: 
libmemcached-0.49\libmemcached-0.48\libmemcached-0.47\libmemcached-0.30\libmemcached-0.43\\libmemcached-0.42\ 
下安装有错误 
memcached_functions_mysql-0.10在: 
libmemcached-0.42\下安装有错误 
memcached_functions_mysql-0.8在: 
libmemcached-0.49\libmemcached-0.48\libmemcached-0.47\libmemcached-0.44\libmemcached-0.43\ 
\libmemcached-0.42\下安装有错误 
MySQL测试版本:5.1.55,操作系统Centos5.4 64bit,内存2G安装libmemcached-0.34和memcached_functions_mysql-0.9,

代码如下:

 
[root@sunss24 libmemcached-0.34]#./configure \ 
--with-memcached=/home/memcache/bin/memcached 
[root@sunss24 libmemcached-0. 34]# make 
[root@sunss24 libmemcached-0. 34]# make install 
再运行一下memstat,算成功了 
[root@sunss24 ~]# ln -s /usr/local/lib/libmemcached.so.3 /usr/lib/ 
[root@sunss24 ~]# cd memcached_functions_mysql-0.9 
[root@sunss24 memcached_functions_mysql-0.9]# ./configure \ 
--with-mysql=/usr/local/mysql/bin/mysql_config \ 
--libdir=/usr/local/mysql/lib/ 
[root@sunss memcached_functions_mysql-0.9]# make && make install 
安装完成后将UDFs加载到MySQL中:

代码如下:

 
mysql> show variables like "%plugin%"; 
+---------------+-----------------------------------+ 
| Variable_name | Value | 
+---------------+-----------------------------------+ 
| plugin_dir | /usr/local/mysql/lib/mysql/plugin | 
+---------------+-----------------------------------+ 
1 row in set (0.00 sec) 

[root@sunss ~]# find / -name "libmemcached_functions_mysql.so" 
/usr/local/mysql/lib/libmemcached_functions_mysql.so 
/root/memcached_functions_mysql-0.9/src/.libs/libmemcached_functions_mysql.so 
You have new mail in /var/spool/mail/root 
[root@sunss ~]# cp /usr/local/mysql/lib/libmemcached_functions_mysql.so /usr/local/mysql/lib/mysql/plugin/ 
[root@sunss ~]# cd memcached_functions_mysql-0.9/ 
[root@sunss ~]#cd sql/ 
mysql> source install_functions.sql; 
查看各种版本:

代码如下:

 
mysql> select memc_udf_version(); 
+--------------------+ 
| memc_udf_version() | 
+--------------------+ 
| 0.9 | 
+--------------------+ 
1 row in set (0.00 sec) 

mysql> select memc_libmemcached_version(); 
+-----------------------------+ 
| memc_libmemcached_version() | 
+-----------------------------+ 
| 0.34 | 
+-----------------------------+ 
1 row in set (0.00 sec) 

mysql> 
遇到问题:

代码如下:

 
No package 'libmemcached' found 

Consider adjusting the PKG_CONFIG_PATH environment variable if you 
installed software in a non-standard prefix. 

Alternatively, you may set the environment variables DEPS_CFLAGS 
and DEPS_LIBS to avoid the need to call pkg-config. 
See the pkg-config man page for more details. 
解决办法: 
[root@sunss24 memcached_functions_mysql-0.9]# whereis pkgconfig 
[root@sunss24 memcached_functions_mysql-0.9]# export \ 
PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:/usr/lib/pkgconfig 
导出所有memcache内容:使用:memcached-hack.zip效率测试:插入:

代码如下:

 
<?php 
include_once("gettime.php"); 
$btime = getmicrotime(); 
$i = 0; 
$mem = new Memcache(); 
$mem->addServer('192.168.0.10', 11212); 
$local_db = mysql_connect("192.168.0.208", "sunss", "123456"); 
if(!$local_db) 
{ 
die('Could not connect: '.mysql_error()); 
} 
$local_db_sel = mysql_select_db("test", $local_db); 
mysql_query("set names utf8", $local_db); 
while ( $i < 1000) { 
$re_sql = "insert into urls (id,url) values ($i, 'www.gongchang.com')"; 
$res = mysql_query($re_sql, $local_db); 
$i++; 
} 
mysql_close($local_db); 
$etime = getmicrotime(); 
$runTime = round($etime - $btime, 4); 
echo "runTime: ".$runTime."\r\n"; 
?> 
1000条,插入时间:runTime: 1.4072删除:

代码如下:

 
<?php 
include_once("gettime.php"); 
$btime = getmicrotime(); 
$i = 0; 
$mem = new Memcache(); 
$mem->addServer('192.168.0.10', 11212); 
$local_db = mysql_connect("192.168.0.208", "sunss", "123456"); 
if(!$local_db) 
{ 
die('Could not connect: '.mysql_error()); 
} 
$local_db_sel = mysql_select_db("test", $local_db); 
mysql_query("set names utf8", $local_db); 
while ( $i < 1000) { 
//$re_sql = "insert into urls (id,url) values ($i, 'www.gongchang.com')"; 
$re_sql = "delete from urls where id=".$i; 
//echo "re_sql_1: ".$re_sql."\n"; 
$res = mysql_query($re_sql, $local_db); 
$i++; 
} 
mysql_close($local_db); 
$etime = getmicrotime(); 
$runTime = round($etime - $btime, 4); 
echo "runTime: ".$runTime."\r\n"; 
?> 
删除1000条,运行时间:runTime: 1.5534更新未作结论:每秒query大概650条记录,比上次的mysql-udf-http快多了

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作者:喵哥笔记

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