This blog post shows how you can use the Severalnines Configurator for MySQL Replication to deploy a Multi-master replication setup, and install ClusterControl.
You can also watch videos showing what is described below or read an even more detailed tutorial.

When the deployment is finished you have a set of tools to manage and monitor replication, as well as to add new slaves, and to perform failover.
You can choose:

• The number of slaves you wish to connect to the …

At Percona, we’re now using sphinx for our documentation. We’re also using Jenkins for our  continuous integration. We have compiler warnings from GCC being parsed by Jenkins using the built in filters, but there isn’t one for the sphinx warnings.

Luckily, in the configuration page for Jenkins, the Warnings plugin allows you to specify your own filters. I’ve added the following filter to process warnings from sphinx:

For those who want to copy and paste: …

Both Henrik and myself will be at Percona Live London 2011 in late October speaking on the wonderful Drizzle database server.

Other speakers at the conference will be talking about a wide range of topics surrounding the MySQL ecosystem including performance monitoring, backup, search, scaling and data recovery.

P.S. I do have a discount code – ask me in the comments for it!

Microsoft’s Android revenue. Tizen formation. And more.

# As Microsoft announced its latest Android-related patent agreement with Samsun, Goldman Sachs estimated that the company will make $444m in revenue from Android patent deals for fiscal year 2012.

# LiMo Foundation and The Linux Foundation announced the formation of Tizen to develop a Linux-based device software platform.

# Karmasphere raised $6m in a series B round …

Did you know that the following query actually performs a JOIN? You can’t see it, but it’s there:

SELECT the_day, COUNT(*), SUM(clicks), SUM(cost)
FROM ad_clicks_by_day
WHERE the_day >= …

I’m sure you are aware that the last Percona server release includes a new improved MEMORY storage engine for MySQL.
This new engine is based on Dynamic Row Format and offers some of great features, specialy for VARCHAR, VARBINARY, TEXT and BLOB fields in MEMORY tables.

But because this new MEMORY engine by Percona has some limitations and because Percona server hasn’t used it for its internal temporary tables yet, I would like to talk about what can be the real benefits to have a brand new MEMORY engine based on Dynamic row format specialy for internal memory tables.

Just remember or discover how MySQL uses …

[ UPDATED 2011-09-22 ] :
For French attendees : Vous participez ou souhaitez participer à cette conférence, rejoignez le groupe de la communauté francophone pour partager autour de cet évènement
For All : Download the take away PDF of the conference here : PLL2011.pdf
For All : Download the schedules : Percona_Live_London2011.ics

I don’t want to debate about the next MySQL Conference here, you can find a great summary post here : …

 Oracle starts charging for MySQL Add-ons

Exciting news, Oracle just announced commercial MySQL extensions that they'll be offering paid extensions to the core MySQL free product.

To be sure, this has raised waves of concern among the community, but on the whole I suspect it will be a good thing for MySQL.  This brings more commercial addons to the table, which only increases the options for customers.  Many will continue to use the core database product only, and avoid license hassles while others will surely embark on a hybrid approach if it solves their everyday business problems.

Speaking of licensing, back in May, Amazon announced that it's RDS or Relational Database Service would now offer Oracle as an option. …

I'll be speaking about MySQL in the Cloud at Percona Live in London October 24-25 and this will be talk centered on our experiences of running a database setup, based on MySQL but with serveral complementary technologies, in Mamzon EC2.

I will talk about our experiences so far, we have a lot of data at Recorded Future and we are also write intensive, which is a slight difference from what you may be used to from other Web-based systems. The amount of data we have right now is in the multi Tb range, and we are growing fast. Is a could environment really useful for something like this? What does work and what doesn't?

Also, I will talk a bit on what I think the technological issues are here when using traditional servers such as MySQL and MongoDB, and how I would like it to work instead. Finally, I'll take a shot at looking at some alternatives that I …