Next Friday, May 31 at 10 a.m. Pacific, I’ll present Percona’s next webinar, “SQL Query Patterns, Optimized.” Based on my experiences solving tough SQL problems for Percona training and consulting, I’ll classify several common types of queries with which developers struggle. I’ll test several SQL solutions for each type of query objective, and show how [...]
Is Synchronous Replication right for your app?
May 14, 2013 By 17 Comments
I talk with lot of people who are really interested in Percona XtraDB Cluster (PXC) and mostly they are interested in PXC as a high-availability solution. But, what they tend not to think too much about is if moving from async to synchronous replication is right for their application or not. Facts about Galera replication [...]
Percona XtraDB Cluster for MySQL and encrypted Galera replication
May 3, 2013 By 2 Comments
Few people realize that Galera/Percona XtraDB (PXC) replication can be encrypted via SSL for secure transfer of your replicated data. Setting this up is actually quite easy to do and probably will look familiar to a lot of people. Setting up SSL and Galera Create and propagate a single key/cert pair First, we create a [...]
Percona Live MySQL Conference 2013 wrap-up
April 29, 2013 By Leave a Comment
The Percona Live MySQL Conference & Expo 2013 was April 22-25 in Santa Clara, California. This was Percona’s second year organizing the conference and we were very pleased with the event and the feedback (check the #perconalive hashtag for a sampling of the great comments such as this from Tom Krouper or this from John [...]
The write cache: Swap insanity tome III
April 19, 2013 By 5 Comments
Swapping has always been something bad for MySQL performance but it is even more important for HA systems. It is so important to avoid swapping with HA that NDB cluster basically forbids calling malloc after the startup phase and hence its rather complex configuration. Probably most readers of this blog know (or should know) about [...]
Disconnecting a replication slave is easier with MySQL 5.5+ (RESET SLAVE vs. RESET SLAVE ALL)
April 17, 2013 By 2 Comments
It’s not uncommon to promote a server from slave to master. One of the key things to protect your data integrity is to make sure that the promoted slave is permanently disconnected from its old master. If not, it may get writes from the old master, which can cause all kinds of data corruption. MySQL [...]
10 years of MySQL User Conferences
April 11, 2013 By 6 Comments
In preparing for this month’s Percona Live MySQL Conference and Expo, I’ve been reminiscing about the annual MySQL User Conference’s history – the 9 times it previously took place in its various reincarnations – and there are a lot of good things, fun things to remember. 2003 was the year that marked the first MySQL user conference [...]
MySQL 5.6 – InnoDB Memcached Plugin as a caching layer
March 29, 2013 By 10 Comments
A common practice to offload traffic from MySQL 5.6 is to use a caching layer to store expensive result sets or objects. Some typical use cases include: Complicated query result set (search results, recent users, recent posts, etc) Full page output (relatively static pages) Full objects (user or cart object built from several queries) Infrequently [...]
Network at the Percona Live MySQL Conference and Expo
March 28, 2013 By Leave a Comment
We’re very pleased with the speaker lineup for the Percona Live MySQL Conference and Expo. We have outstanding MySQL experts speaking on a variety of topics during the breakout sessions and tutorials. And the keynote speakers are all top notch, MySQL technology and industry experts who will share their views of the ecosystem. Beyond the [...]
5 Percona Toolkit Tools for MySQL That Could Save Your Day: April 3 Webinar
March 22, 2013 By Leave a Comment
On April 3 at 10 a.m. PST, I’ll be giving a webinar titled “5 Percona Toolkit Tools for MySQL That Could Save Your Day.” In this presentation you’ll learn how to perform typical but challenging MySQL database administration tasks. My focus will be on the following tools: pt-query-digest, to select the queries you should try [...]
