Inspired by Antony, Andrey has implemented a memory optimization for the PHP mysqlnd library. Depending on your usage pattern and the actual query, memory used for result sets is less and free’d earlier to be reused by the PHP engine. In other cases, the optimization will consume about the same or even more memory. The additional choice is currently available with mysqli only.

From the network line into your script

Many wheels start spinning when mysqli_query() is called. All the PHP MySQL APIs/extensions (mysqli, PDO_MySQL, mysql) use a client library that handles the networking details and provides a C API to the C extensions. Any recent PHP will default to use the mysqlnd library. The library speaks the MySQL Client Server …

If you use Amazon Elastic Compute Cloud (EC2), you are always given choices of AMIs (by default; there are plenty of other AMIs available for your base-os): Amazon Linux AMI, Red Hat Enterprise Linux, SUSE Enterprise Server and Ubuntu. In terms of cost, the Amazon Linux AMI is the cheapest, followed by SUSE then RHEL. 

I use EC2 a lot for testing, and recently had to pay a “RHEL tax” as I needed to run a RHEL environment. For most uses I’m sure you can be satisfied by the Amazon Linux AMI. The last numbers suggest Amazon Linux is #2 in terms of usage on EC2.

Anyway, recently Amazon Linux AMI came out with the 2014.03 release (see release notes). You can install MySQL …

You may not be aware of this but the foundation that the MySQL optimizer builds on when choosing a query plan – the cost model – is for the most part very old. At least in tech terms.

Much of it was written in another millennium, at a time when “Forest Gump” and “Titanic” won Oscars and “Baywatch” was the big thing on TV. Although the revision history doesn’t go that far back, it wouldn’t come as a surprise if it predates that annoying “Macarena” song and even “The Sign” (Ace Of Base) – don’t follow those links unless you’re feeling very brave…

Thankfully, a lot has happened since Ace of Base. Modern CPUs have …

The Percona Live MySQL Conference and Expo 2014 was March 31st through April 4th in Santa Clara, California. I heard numerous positive comments from attendees and saw even more on social media. Our conference team lead by Kortney Runyan pulled together a smooth, enjoyable event which made it easy for attendees to focus on learning and networking. Some of the Percona Live MySQL Conference highlights from this year follow.

Percona Live MySQL Conference Highlights

A few stats for the conference this year versus last year:

• Total registrations were up nearly 15%
• Attendees represented 40 countries, up from 36 in 2013
• 34 companies sponsored the conference this year, up from 33 last year
• This year’s conference covered 5 days including the Open Source Appreciation Day, up from 4 days last year

…

During a typical release cycle for TokuDB at Tokutek, we spend time qualifying and hardening the product using numerous tools.  For example, we run stress and unit tests directly on the Fractal Tree indexes, MySQL Test Runner (MTR) tests on the storage engine as well as numerous performance benchmarks to prevent regressions. In addition, we have recently been implementing the Random Query Generator (RQG) framework internally here at Tokutek to more exhaustively stress TokuDB.  My name is Joel Epstein and I am a Quality Assurance Engineer here at Tokutek who has been integrating RQG into the overall test plan strategy.

At a high level, RQG is a …

April 10, 2014 By Severalnines

In the wake of recent concerns and debates raised around the Heartbleed bug, we wanted to update Severalnines ClusterControl users on any impact this bug might have on ClusterControl & associated databases and/or applications.

Background

If your ClusterControl's web application has been accessible on the internet, then most likely you have also been exposed to the Heartbleed OpenSSL security bug, see: http://heartbleed.com for more details. 

By default, our database deployment script enables SSL encryption for the Apache web server on the Controller host with a generated private SSL key and a self-signed certificate. SSL encryption is used between the UI and the Controller REST API if you have clusters added with HTTPS, which we do by default. The content that is encrypted …

If you’ve been following this blog (my colleague, David Busby, posted about it yesterday) or any tech news outlet in the past few days, you’ve probably seen some mention of the “Heartbleed” vulnerability in certain versions of the OpenSSL library.

So what is ‘Heartbleed’, really?

In short, Heartbleed is an information-leak issue. An attacker can exploit this bug to retrieve the contents of a server’s memory without any need for local access. According to the researchers that discovered it, this can be done without leaving any trace of compromise on the system. In other words, if you’re vulnerable, they can steal your keys and you won’t even notice that they’ve gone missing. I use the word “keys” literally here; by being able to access the contents of the impacted service’s memory, the attacker is …

Continuent would like to better understand the relationships and data flows that exist between different database systems that you are using to understand your replication and data integration needs better. In particular, we'd like to know about any heterogeneous data exchanges, including manual dump/load and automated process, and whether non-database sources, such as Twitter and Facebook,

A potential customer asked my about porting her application from Oracle Database to MySQL.

I always try to start with the "why" (a dear friend bought me this book, recommended: http://www.amazon.com/Start-Why-Leaders-Inspire-Everyone/dp/1591846447).

She said "cloud!". I said "OK!".

I conducted a short research, found many things in many places all over the place, brought them to a nice email I sent her back and then thought I'll post it here and make it public as it might be useful for us all. If you feel that I missed something, add comments, send feedback.

These are the leading tools to do the actual migration of the data structure, data export/import, sprocs, triggers, etc.:

1. MySQL Workbench has a migration feature: http://www.mysql.com/products/workbench/migrate/
2. MySQLYog can be used to migrate: …

For some months now, there have been some back & forth emails with Matt, one of the senior DBAs behind the popular messaging service, KakaoTalk (yes, they are powered by MariaDB). Today I got some positive information: the book published entirely in the Korean language, titled Real MariaDB is now available.

It covers MariaDB 10.0. Where appropriate, there are also notes on MySQL 5.6 (especially with regards to differences). This is Matt’s fourth MySQL-related book, and there’s a community around it as …