The latest from the MySQL community

Live from the PHP Summit conference in Munich: NoSQL in MySQL. A couple of hours ago I gave a talk about NoSQL in MySQL, contents: what is NoSQL, what is HandlerSocket, what is the InnoDB Memcached Plugin InnoDB and how to use with PHP, is this NoSQL? Slides are below.

NoSQL in MySQL from Ulf Wendel

(PDF download)

The talk was called a night session. Night session means, its the last talk for the day. After eight hours packed with workshops everybody is a bit tired and exhausted. What else could I do but tell them a bed story. What else …

Take the MySQL and PHP - Developing Dynamic Web Applications course to learn to develop applications in PHP and how to use MySQL for those applications. This 4-day class helps you improve your PHP skills and combine them with time-proven database management techniques to create best-of-breed web applications that are efficient, solid and secure.

You can take this live instructor-led course as a:

• Live-virtual event: Take this class from your own desk, choosing from many events on the schedule to suit different time-zones.
• In-class: Travel to an education center. Some events already on the schedule include:

Accessing Percona XtraDB Cluster nodes in parallel with MySQL asynchronous calls

This post is followup to Peter’s recent post, “Investigating MySQL Replication Latency in Percona XtraDB Cluster,” in which a question was raised as to whether we can measure latency to all nodes at the same time. It is an interesting question: If we have N nodes, can we send queries to nodes to be executed in parallel?

To answer it, I decided to try a new asynchronous call to send a query to MySQL using a new MySQLnd driver for PHP. In this post I’ll only show how to make these calls, and in following posts how to measure latency to all nodes.

PHP does not provide …

Installing Nginx With PHP5 (And PHP-FPM) And MySQL Support On Scientific Linux 6.3

Nginx (pronounced "engine x") is a free, open-source, high-performance HTTP server. Nginx is known for its stability, rich feature set, simple configuration, and low resource consumption. This tutorial shows how you can install Nginx on a Scientific Linux 6.3 server with PHP5 support (through PHP-FPM) and MySQL support.

Installing Apache2 With PHP5 And MySQL Support On Scientific Linux 6.3 (LAMP)

LAMP is short for Linux, Apache, MySQL, PHP. This tutorial shows how you can install an Apache2 webserver on a Scientific Linux 6.3 server with PHP5 support (mod_php) and MySQL support.

Sometimes we encounter odd application responses that seem to make no sense. One of these such issues is related to running virtual server instances (OS Containers not Para-Virtualized VMs) and attempting to back up their data to Amazon’s S3 cloud storage. For moderately sized virtual machines running MySQL databases or Python/PHP based websites and code repositories this can be an inexpensive, quickly provisioned, and easy way to provide disaster recovery backups in numerous geographic locations, since we generally want DR content to be located in a physically distant location. Nevertheless, we can encounter errors if using an S3 mount in a distance location from our server if the timezone/sync data is incorrect.

The commonly seen error is as follows – and it doesn’t give much information for troubleshooting and resolution.

WARNING: Upload failed:  ([Errno 32] Broken pipe)
WARNING: Retrying on lower speed (throttle=0.00) …

Download PDF Presentation

At the recent New York PHP Group in New York, I gave a presentation on “Secrets of mysqlnd”. While there are no real “secrets” of the new MySQL Native Driver for PHP, available in PHP 5.3, and the default for PHP 5.4+ replacing libmysqlclient, there are new features of the driver many are unaware of. If you have ever had to fight the gods with compiling a particular version of PHP with the right libmysqlclient dependency, the good news is that legacy requirement is no longer necessary.

Some of the topics discussed in detail included support for read/write splitting and load balancing with existing applications, …

PECL/mysqlnd_ms is a client-side load balancer for PHP that supports any MySQL cluster. It does read-write splitting, failover, introduces a quality of service concept, supports partitioning and, of course, load balancing. New mysqli API (begin, *savepoint) calls in PHP 5.5.0 help to improve transaction awareness. New read only in MySQL 5.6 promise major performance gains (think 2x) and an option to reduce the load on a MySQL Replication master. Read how the features go together in PECL/mysqlnd_ms 1.5.

Load balancing – transaction aware?

A load balancer must not switch connections in the middle of a transaction. A load balancer must send all queries to the server a transaction has been started on until the transaction ends. Unfortunately, it is very hard to develop a transparent load balancer for MySQL. In general there are …

This month is a special month. It’s not because of President’s Day or even the exciting day where we revel in groundhogs. No, this month is special because the free book give-away is happening again. This is where you, the reader, gets to win something free for doing nothing more than posting a comment saying that you want a copy of my recently published book – The InnoDB Quick Reference Guide from Packt Publishing. The book is a great reference for DBAs, PHP, Python, or Perl programmers that integrate with MySQL and want to learn more about the InnoDB database engine.

So, all you have to do is post a comment here saying that you want a copy and write out a single (or more) sentence about how you use InnoDB in your development or production environment. At the end of the month two readers will be chosen via a random list sorting script that …

Installing Lighttpd With PHP5 (PHP-FPM) And MySQL Support On Fedora 18

Lighttpd is a secure, fast, standards-compliant web server designed for speed-critical environments. This tutorial shows how you can install Lighttpd on a Fedora 18 server with PHP5 support (through PHP-FPM) and MySQL support. PHP-FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation with some additional features useful for sites of any size, especially busier sites. I use PHP-FPM in this tutorial instead of Lighttpd's spawn-fcgi.