As a continuation of previous post, now, I will show how to make a mysql plugin for ldap authentication.

Get the mysql-server source code at http://dev.mysql.com/downloads/mysql/ (http://dev.mysql.com/get/Downloads/MySQL-5.5/mysql-5.5.27.tar.gz/from/http://cdn.mysql.com/)

Installing necessary packages

yum groupinstall 'Development Tools'
yum install cmake ncurses-devel

Download source code, build and start MySQL Server

wget http://dev.mysql.com/get/Downloads/MySQL-5.5/mysql-5.5.27.tar.gz/from/http://cdn.mysql.com/
tar -xzf mysql-5.5.27.tar.gz
cd mysql-5.5.25

# Preconfiguration setup
groupadd mysql
useradd -r -g mysql mysql

# Beginning of source-build specific instructions
cmake .
make
make install

# Postinstallation setup
chown -R mysql .
chgrp -R mysql .
./scripts/mysql_install_db --user=mysql
chown -R root .
chown -R mysql data

cp support-files/mysql.server …

One of the ways to import data into MySQL is using the LOAD DATA INFILE. It is a faster method than recovering from a dump, as it’s raw data instead of SQL sentences.

The import time depends on the table engine, for example, MyISAM can be 40 times faster than Innodb. Let’s benchmark this:

Preparation

I’m gonna make some benchmarking using MySQL 5.1.36 (64 bits MacOS X). I’ll need a big table, so I’ll take City from the World Database and create a huge table called “city_huge”:

CREATE TABLE city_huge LIKE CITY;

INSERT INTO city_huge 
    SELECT NULL, name, CountryCode, District, Population FROM city;
# Run this sentence 100 times,
# so city_huge table will be 100 times bigger than city.
# Tip: use a script, temporary table, stored procedure...
# or tell your monkey to do so.

SELECT COUNT(*) FROM …