Blog Profile / The Data Charmer

Filed Under:Programming / Database Development
Posts on Regator:178
Posts / Week:0.4
Archived Since:June 30, 2008

Blog Post Archive

The price of safe data - Benchmarking semi synchronous replication

Some time ago I wrote about MySQL 5.5 semi-synchronous replication. Since then, I have wanted to benchmark the overhead of semi-synchronous replication with a decent server. Now the occasion presented itself, thanks to some related business...Show More Summary

Open Database Camp 2011 opens today!

The Open Database Camp 2011 opens today with the Welcome Party, starting today at 7pm CEST. The party is open to all the ones who have registered in the Attendees list.By car you have to reach Pula, take Via Nora (Nora Street), thanShow More Summary

Introducing the Flying Clusters, and more than MySQL replication

My Colleague Linas Virbalas has just crossed the boundary between real and virtual and has started a blog, titled Flying Clusters.Linas is a gifted developer who is taking care of the special projects. One of such projects is replication between MySQL and PostgreSQL, which works quite well. Show More Summary

Replication : different points of view

The following quotes are the first sentences in the replication chapter of two similar books. Both are admin cookbooks. One is for PostgreSQL, one for MySQL.Replication isn't magic, though it can be pretty cool. It's even cooler when it works, and that's what this chapter is all about.Replication requires understanding, effort, and patience. Show More Summary

Open Database camp 2011 - Travel logistics, and don't forget the party

The Open Database Camp 2011 is near. In 9 days, the welcome party starts, and then the conference itself gets going.If you are coming earlier than Friday, May 6th, you can either use public transportation or book a private seat with a volunteer in the car pooling page. Show More Summary

Replication metadata in MySQL 5.6.2

The default storage engine is InnoDB, or is it not? When MySQL 5.5 went GA, the biggest piece of news was that the default storage engine is now InnoDB. Good news, and hope for a better future, as InnoDB is the most reliable storageShow More Summary

Pewter for Tungsten - Thanks, MySQL community!

After the opening keynote at the MySQL Conference, there was the usual ceremony of the MySQL community awards. Since Oracle declined to continue in the MySQL AB tradition of awarding the contributions from the community, the community...Show More Summary

How fast is parallel replication? See it live today

I talked about parallel replication last month. Since then, there has been a considerable interest for this feature. As far as I know, Tungsten's is the only implementation of this much coveted feature, so I can only compare with MySQL native replication.The most compelling question is "how fast is it?"That's a tricky one. Show More Summary

An hidden options file trick

I was listening today to the OurSQL Episode 36: It's Not Our (De)fault! Part 1. As usual, Sheeri and Sarah are very informational and entertaining while explaining the innards of MySQL and their best practices.Being a DBA oriented show, there was an omission in this podcast. Show More Summary

Advanced replication for the masses - Part I - Getting started with Tungsten Replicator

MySQL DBAs and developers: oil your fingers and get ready to experience a new dimension of data replication. I am pleased to announce that Continuent has just released Tungsten Replicator 2.0, an open source data replication engine that can replace MySQL native replication with a set of advanced features.A note about the source code. Show More Summary

Pitfalls of monitoring MySQL table activity with stored routines

A friend of mine needed a quick method to monitor a table that was frequently updated. There were several procedures writing to the table several times per second. He needed a quick way of determining how many updates per second the table was getting. The table has only one row, which includes a counter that is increased at each operation. Show More Summary

Announcing the Open Database Camp - Sardinia, May 2011

I have been traveling to many conferences in the last 10 years, and many times I have been asked to organize an event in my native land, Sardinia. After delaying the inevitable for long time, here I can announce it. The Open Database...Show More Summary

Looking for a hack - Passing comment-like info through the binary log

I am facing an interesting problem. I need to mark somehow a statement in such a way that the comment is preserved through the binary log. I don't have control on how the statement is generated or using which client software. For the...Show More Summary

How to create a private cloud in your laptop

Everybody is moving to cloud architectures, although not all agree on what cloud computing is. In my limited understanding, and for the purpose of my work, cloud computing is a quick and versatile availability of virtual machines. Now, if my purpose was deploying these machines, a private cloud in one host (namely, my laptop) would not make sense. Show More Summary

Testing MySQL 5.5 semi-synchronous replication

A few days ago I saw an article about Semi-Synchronous Replication in MySQL 5.5. It asks questions, and doesn't give answers beyond gut feeling. So I thought that I would do some practical testing of this new feature. Before we go that way, though, let's revisit the theory. How semi-synchronous replication works Figure 1. Show More Summary

Quick start guides: MySQL cluster in 10 minutes

Scared of MySQL Cluster? Don't be. You may want to try the quick start guides that are available in the Cluster downloads page. These guides are a step-by-step instructions set to create a simple cluster in one host. Following the instructions, you will be able to shape up all the cluster components in 10 minutes or less. Show More Summary

Performance gain of MySQL 5.1 InnoDB plugin

You know already that InnoDB in MySQL 5.5 has great improvements in performance and scalability. You will have to wait a few months for that, though, because MySQL 5.5 is not GA yet. But if you need some extra performance in MySQL 5.1, you may want to use the Innodb Plugin instead of the built-in one. Show More Summary

Linux MySQL distros meeting in Brussels

When I saw Shlomi's post on why not to use apt-get or yum for MySQL, I thought immediately that his conclusions are quite reasonable. What you get from the Linux distributions is not the same thing that you find in the official MySQL downloads page. Show More Summary

Multi dimensional cubes in MySQL through Gearman

I gave two presentations about Gearman at the As part of the preparation for these talks, I created several sample applications. One of them, about remote replication administration, I will cover in a separate post. The...Show More Summary

Holiday gift - A deep look at MySQL 5.5 partitioning enhancements

Half a day into my vacation, I managed to finish an article on a topic that has been intriguing me for a while. Since several colleagues were baffled by the semantics of the new enhancements of MySQL 5.5 partitions, after talking atShow More Summary

Copyright © 2015 Regator, LLC