PHP數據庫連接池SQL Relay安裝使用

DedMcIntyre 8年前發布 | 106K 次閱讀數據庫連接池

來自： http://blog.csdn.net/21aspnet/article/details/50774684

SQL Relay按照其官網http://sqlrelay.sourceforge.net/index.html上所說是：A powerful database connection management solution.

翻譯為中文也就是說SQL Relay是一個開源的數據庫池連接代理服務器。

目前SQL Relay支持的數據庫很多：

SQL Relay supports Oracle, MySQL, PostgreSQL, SAP/Sybase, IBM DB2, Informix, Firebird and SQLite databases directly, using the native client API's for those databases.
Support is provided for Microsoft SQL Server via the FreeTDS API.

支持的API也是非常豐富的

Guides: C++, C, C#, Perl, PHP, Python, Ruby, Java, TCL, Erlang, node.js
References: C++, C, C#, Perl, PHP, Python, Ruby, Java, TCL, node.js,

本人講述怎么在Linux+PHP+FreeDTS環境使用連接池，其實PHP->SQL Relay->FreeDTS->數據庫這樣的架構。

下面說安裝使用

1.先安裝rudiments

建議盡量安裝新版，舊版可能會報錯需要解決。

# wget http://sourceforge.net/projects/rudiments/files/rudiments/0.28.2/rudiments-0.28.2.tar.gz/download
# tar xvzf rudiments-0.54.tar.gz
# cd rudiments-0.54
# ./configure --prefix=/usr/local/rudiments
# make && make install

2.再安裝sqlrelay

# wget https://sourceforge.net/projects/sqlrelay/files/sqlrelay/0.64/sqlrelay-0.64.tar.gz/download
# tar vxzf sqlrelay-0.64.tar.gz
# cd sqlrelay-0.64
# ./configure --prefix=/usr/local/sqlrelay --with-rudiments-prefix=/usr/local/rudiments --with-freetds-prefix=/usr/local/freetds --with-php-prefix=/usr/local/php

# make && make install

3.修改php配置文件

# vim /usr/local/php/lib/php.ini
增加擴展

extension ="sql_relay.so"

注意：需要確認phpinfo

4.修改freeDTS配置

關于freeDTS的安裝參考此文：http://blog.csdn.net/unix21/article/details/47449901

修改FreeTDS的配置文件freetds.conf
# vim /usr/local/freetds/etc/freetds.conf

加入以下內容

[msdetest]
host = 192.168.1.1
port =1433
tds version = 7.0
client charset = UTF-8

不然會中文亂碼，需要對應的編碼類型GB2312等等。

5.修改SQL Relay的配置文件

# cd /usr/local/sqlrelay/etc/
# cp sqlrelay.conf.example sqlrelay.conf
# vim sqlrelay.conf

整個配置非常好理解

<?xml version="1.0"?>
<!DOCTYPE instances SYSTEM "sqlrelay.dtd">
<instances>
<instance id="msdetest" port="9001" socket="/tmp/msdetest.socket" dbase="freetds" connections="10" maxconnections="50" maxqueuelength="0" growby="1" ttl="60" endofsession="commit" sessiontimeout="5" runasuser="nobody" runasgroup="nobody" cursors="5" authtier="listener" handoff="pass">
<users>
<user user="admin" password="admin"/>
</users>
<connections>
<connection connectionid="msdetest" string="server=msde;db=test;user=admin;password=admin;" metric="1"/>
</connections>
</instance>
</instances>

6.啟動SQL Replay

# export PATH=$PATH:/usr/local/sqlrelay/bin
啟動：

# sqlr-start -id msde

上圖是成功啟動，如果配置錯誤會提示數據庫連不上之類的。

SQL工具

# sqlrsh -id msde

7.php使用連接池

<?php
$con=sqlrcon_alloc("msdetest",9001,"/tmp/msdetest.socket","admin","admin",0,1);
$cur=sqlrcur_alloc($con);
sqlrcur_sendQuery($cur,"SELECT top 10 * FROM test order by id desc");
for ($row=0; $row<sqlrcur_rowCount($cur); $row++) {
for ($col=0; $col<sqlrcur_colCount($cur); $col++) {
echo sqlrcur_getField($cur,$row,$col);
echo ",";
}
echo "<br>\n";
}
sqlrcur_free($cur);
sqlrcon_free($con);
?>

前端網頁從連接池取出數據