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Command line prompt
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The mysql> command-line prompt is iconic, shown in countless documentation pages, forum posts, tutorials and manuals. It’s immediately identifiable – one look, and you immediately know the context in which commands are being executed. So it’s only with good reason that we would consider changing the prompt value to something else, and Daniël van Eeden provided a compelling suggestion to modify this to provide user, host and database context. Because the mysql prompt is user-configurable, this is easy to do dynamically: …

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Analyst for MySQL v1.1: Database Performance, Security, & Best Practices Auditing Tool Released – Download for FREE!
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Itchy Ninja Software is pleased to announce the release of Analyst for MySQL v1.1. Revolutionize the way you work and administrate MySQL, MariaDB, Galera, and Percona XtraDB installations.

Make More Efficient Use of Your Time

Gathering all of the metrics to diagnose a database installation is a very time consuming process, and many simply do not have the experience to know where to begin. With Analyst for MySQL, you will be able to get your hands on hundreds of metrics within moments. It really takes all of the guesswork, as well as tedious long sessions of …

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OurSQL Episode 206: Pieces of Fabric
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PodcastsPerformanceServer Tuning

In this episode we discuss sharding and high availability with MySQL Fabric, including installation and configuration. Ear Candy is rolling out GTIDs with no restarting, and At the Movies is putting MySQL Fabric to use, including a live demo.

Using gdb to understand what locks (and when) are really set by InnoDB. Part I.
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There is a story behind this post. To make it short, the detailed study presented here started when I noted old Bug #72748 in "No feedback" status few days ago. I considered this status totally wrong and started a discussion on Facebook about it (yes, this is what I usually do, I discuss handling of MySQL bugs in public).

The technical topic of this discussion (blaming aside) was the way AUTO-INC locks are set by InnoDB with default innodb_autoinc_lock_mode=1. …

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MySQL Parallel Replication and Slave Group Commit
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http://blog.booking.com/evaluating_mysql_parallel_replication_2-slave_group_commit.html

Follow the link above to read my latest article on the Booking.com developer blog.  It is about MySQL Parallel Replication and a very nice side effect of the MariaDB implementation: …

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Scaling Backend Systems at VividCortex
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I wrote a guest post for High Scalability about how we scale our backend systems at VividCortex. It’s heavy on MySQL, sprinkled with a little bit of Redis’s magic pixie dust, and Kafka is also a key part of the architecture.

Important takeaways:

  • Our workload is unusual in that some use cases require reading huge amounts of data with interactive response times. We have lots of time-series data, but not a typical time-series workload.
  • Our data distribution is also weird.
  • Read optimization …
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Log Buffer #416, A Carnival of the Vanities for DBAs
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This log buffer edition sprouts from the beauty, glamour and intelligence of various blog posts from Oracle, SQL Server, and MySQL.

Oracle:

Oracle Exadata Performance: Latest Improvements and Less Known Features

Exadata Storage Index Min/Max Optimization

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MySQL bind-address
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While I try to keep things simple, sometimes eliminating options and explanations comes back to haunt me. After posting how to open a Fedora firewall port for a LAMP stack, somebody got trapped by my instructions for installing MySQL on Fedora. They got stuck because they had the following setting in their /etc/my.cnf file:

bind-address=localhost.localdomain

I’d suggested using …

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How to Deploy and Configure MaxScale for SQL Load Balancing with Read-Write Split
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There are two models of load balancing: transport and application layer. HAProxy is a great TCP load balancer, but it’s lack of SQL awareness effectively limits its ability to address certain scaling issues in distributed database environments. In the open source world, there’s been a few SQL-aware load balancers, namely MySQL Proxy, ProxySQL and MaxScale, but they all seemed to be in beta status and unfit for production use. So we were pretty excited when the MariaDB team released a GA version of MaxScale earlier this year. In this blog, we’ll have …

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EXPLAIN minor wishlist
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While we always want better performance and more and larger features for MySQL, those cannot just “magically appear” from one version to another, requiring deep architecture changes and lots of lines of code. However, there are sometimes smaller features and fixes that could be implemented by an intern or an external contributor, mainly at SQL layer, and that could make the MySQL ecosystem friendlier to newbies and non-experts. Making a piece of software easier to use is sometimes overlooked, but it is incredibly important -not everybody using MySQL is a DBA, and the more people adopting it, more people will be able to live from it, both upstream and as third party …

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Showing entries 1 to 10 of 34211 10 Older Entries

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