Read the original article at 3 Ways to Optimize for Paging in MySQL

Join 6100 others and follow Sean Hull on twitter @hullsean. Lots and lots of web applications need to page through information. From customer records, to the albums in your itunes collection. So as web developers and architects, it’s important that we do all this efficiently. Start by looking at how you’re fetching information from your [...]

For more articles like these go to Sean Hull's Scalable Startups

Timing is everything. I wrote about how MySQL man pages were silently relicensed away from the GPL. It was picked up by a lot of sites: Hacker News, Slashdot, LWN, and probably more. That led to a bug report in Debian (#712730) to complain that MySQL is no longer compliant with the Debian Free Software Guidelines (DFSG). That prompted Norvald Ryeng who’s active in Debian (thanks Oracle!) to file MySQL bug

Many application developers would know of New Relic. A SaaS performance and monitoring tool targeted towards your web application monitoring including PHP, Ruby, Java, .Net, Python and Node.

With the release today (June 19, 2013) of the New Relic Platform, custom monitoring of data stores including MySQL are now possible. Try it now free. This link will provide you a free standard account (no cost, no billing details necessary), that enables you to perform application monitoring, server monitoring, MySQL instance monitoring and monitoring of many other products via many plugins.

Over the next few posts I will be discussing some of the design decisions I made for this MySQL plugin. New

I just installed 5.7.1 on Windows and next up was to build it from source on Windows, so that’s what I did, and thought I’d share the steps.

** Prerequisites **

1. Install Microsoft Visual Studio (I installed VS 2010 Express – free)
2. Install cmake
3. Install bison (make sure no spaces in path)

** Build Instructions **

cd c:\mysql\mysql-5.7.1
mkdir bld
cd bld
cmake ..
cmake --build . --config relwithdebinfo --target package

And here is the full output for anyone who might be interested:

C:\Windows\system32>cd C:\mysql\mysql-5.7.1

C:\mysql\mysql-5.7.1>mkdir bld

C:\mysql\mysql-5.7.1>cd bld

C:\mysql\mysql-5.7.1\bld>cmake ..
-- Building for: Visual Studio 10
-- Running cmake version 2.8.11.1
-- Configuring with MAX_INDEXES = 64U
-- The C compiler identification is

This is a follow-up, troubleshooting article that goes hand-in-hand with my “Building MariaDB 5.1 on Windows Revisited” post, and covers some problems and their solutions that one might encounter when attempting to build MariaDB from source code on Microsoft Windows.

The first error I ran into was this, on my main compile step (i.e., the 2nd cmake command):

C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\Microsoft.Cpp
Common.targets(151,5): error MSB6006: "cmd.exe" exited with code 1.
[C:\mysql\mariadb-5.1.67\bld\scripts\GenFixPrivs.vcxproj]

That in itself doesn’t tell us too much. Searching the full compile output, we find:

Generating ../../scripts/mysql_fix_privilege_tables.sql
The system cannot find the file specified.
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\Microsoft.Cpp
Common.targets(151,5):

I previously wrote an article on Building MariaDB 5.1 on Windows, but it was about 1.5 years ago (for 5.1.60; this is for 5.1.67), so I wanted to update this a little since I’ve built it entirely from the command-line this time (as well as highlight a couple problems/solutions – which I’ll cover in a subsequent troubleshooting post). This process it quite similar to my steps for building MariaDB 5.5 and MariaDB 10.0, however it’s slightly different since 5.1 requires you run the configure.js script before running cmake. Aside from that though, things are mostly the same.

Here is the full procedure:

Download 5.1.67

I wanted install MySQL 5.7.1 (1st Milestone Release) on Windows 7 and test it out a bit, so I did, and since things didn’t go as smooth as expected, I thought I’d share my experience, in case anyone else runs into the same issues.

I downloaded the .msi (mysql-5.7.1-m11-winx64.msi) from http://dev.mysql.com/downloads/mysql/ (then click the “Developmental Releases” tab) and installed it following the prompts. That seemed to complete fine, which was great. However, that was it – and not in a good way. I mean, the “installer” basically only unpacked the files to a location.

I was expecting the “configuration” tool to run, but it didn’t. It was not installed, and not an option.

I quickly read through the 5.7.1 changelog and found the config tool is not part of the

A few years back, along with some folks at MySQL and in the open source community, we helped kick off a campaign against software patents in Europe.  This was a hot topic and surprisingly, it seemed no large companies were willing to step up the fight.  As a relatively young company, MySQL had a lot to lose if someone went on the attack against us using patents.  While we had a very small number of patents in our portfolio (mostly through acquisitions), we help them only for defensive purposes.  

It's been interesting to see some stories come out from NPR's Planet Money and This American Life shows that shed more light on software patents.

Read the original article at MySQL for Devs, DBAs and Debutantes

Join 6500 others and follow Sean Hull on twitter @hullsean. I just received my copy of the 5th Edition of Paul DuBois’ MySQL tomb. Weighing in at 1153 pages, it’s a solid text, with a very thorough introduction to the topic of administering MySQL databases. Buy the book here: MySQL 5th Edition by Paul Dubois [...]

For more articles like these go to Sean Hull's Scalable Startups

Read the original article at How to Optimize MySQL UNION For High Speed

Join 6100 others and follow Sean Hull on twitter @hullsean. There are two ways to speedup UNIONs in a MySQL database. First use UNION ALL if at all possible, and second try to push down your conditions. 1. UNION ALL is much faster than UNION How does a UNION work? Imagine you have two tables [...]

For more articles like these go to Sean Hull's Scalable Startups

Subject says its all, this is of course, very good news coming out of the Red Hat Summit. Looking forward to Red Hat Enterprise Linux 7. And of course, CentOS 7 and the other builds that follow. Thank you Red Hat!

MariaDB replaces MySQL in RHEL 7. Glad to see that. #rhsummit

— Major Hayden (@majorhayden) June 12, 2013

at #rhsummit , rhel7 will come without mysql as it will be replaced with mariaDB; which is mysql api compatible. it will include mongodb too

So MariaDB 10.0.3 Alpha is out. Download it and remember to provide feedback.

When you run SHOW ENGINES by default, you don’t get CassandraSE or the CONNECT engine. Make sure you do a yum install MariaDB-cassandra-engine and a yum install MariaDB-connect-engine. 

You will run into conflicts if you had an older MariaDB-CassandraSE engine (so yum remove MariaDB-CassandraSE).

Once you’ve got the packages installed, you can either install the plugin or just restart mysqld.

Happy testing!

Read the original article at The Most Important AWS Feature for Performance and Scalability

Join 6100 others and follow Sean Hull on twitter @hullsean. The Foundation of Speed All servers use disk to store files. Operating system libraries, webserver & application code, and most importantly databases all use disk constantly. So disk speed is crucial to server speed. Also check out: Five more things Deadly to Scalability. Disk Performance [...]

For more articles like these go to Sean Hull's Scalable Startups