The future of MySQL quality assurance: Introducing pquery
Being a QA Engineer, how would you feel if you had access to a framework which can generate 80+ crashes – a mix of hitting developer introduced assertions (situations that should not happen), and...
View Article‘Indexing’ JSON documents for efficient MySQL queries over JSON data
MySQL meets NoSQL with JSON UDFI recently got back from FOSDEM, in Brussels, Belgium. While I was there I got to see a great talk by Sveta Smirnova, about her MySQL 5.7 Labs release JSON UDF functions....
View ArticleHow to setup a PXC cluster with GTIDs (and have async slaves replicating from...
This past week was marked by a series of personal findings related to the use of Global Transaction IDs (GTIDs) on Galera-based clusters such as Percona XtraDB Cluster (PXC). The main one being the...
View ArticleUsing MySQL Event Scheduler and how to prevent contention
MySQL introduced the Event Scheduler in version 5.1.6. The Event Scheduler is a MySQL-level “cron job”, which will run events inside MySQL. Up until now, this was not a very popular feature, however,...
View ArticleWorrying about the ‘InnoDB: detected cycle in LRU for buffer pool (…)’ message?
If you use Percona Server 5.5 and you have configured it to use multiple buffer pool instances than sooner or later you’ll see the following lines on the server’s error log and chances are you’ll be...
View Article3 handy tools to remove problematic MySQL processes
DBAs often encounter situations where they need to kill queries to ensure there are no long-running queries on a MySQL server that would impact performance. Long-running queries can be the result of...
View ArticleEmulating MySQL roles with the Percona PAM plugin and proxy users
From time to time people wonder how to implement roles in MySQL. This can be useful for companies having to deal with many user accounts or for companies with tight security requirements (PCI or HIPAA...
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Percona Server 5.5.42-37.1 is now available
Percona is glad to announce the release of Percona Server 5.5.42-37.1 on March 4, 2015. Based on MySQL 5.5.42, including all the bug fixes in it, Percona Server 5.5.42-37.1 is now the current stable...
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Percona Server 5.6.23-72.1 is now available
Percona is glad to announce the release of Percona Server 5.6.23-72.1 on March 4, 2015. Download the latest version from the Percona web site or from the Percona Software Repositories.Based on MySQL...
View ArticleAdvanced JSON for MySQL
What is JSONJSON is an text based, human readable format for transmitting data between systems, for serializing objects and for storing document store data for documents that have different...
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MySQL and geospatial programming: An introduction to GIS
Geographic information systems (GIS) are used by application developers to incorporate geographic information into their datasets to create apps with cool features such finding the address to the best...
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Deep dive into MySQL’s innochecksum tool
One of our Percona Support customers recently reported that Percona XtraBackup failed with a page corruption error on an InnoDB table. The customer thought it was a problem or bug in the Percona...
View ArticleChoosing a good sharding key in MongoDB (and MySQL)
MongoDB 3.0 was recently released. Instead of focusing on what’s new – that is so easy to find, let’s rather talk about something that has not changed a lot since the early MongoDB days. This topic is...
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Yelp IT! A talk with 3 Yelp MySQL DBAs on Percona Live & more
Founded in 2004 to help people find great local businesses, Yelp has some 135 million monthly unique visitors. With those traffic volumes Yelp’s 300+ engineers are constantly working to keep things...
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FoundationDB is acquired by Apple: My thoughts
TechCrunch reported yesterday that Apple has acquired FoundationDB. And while I didn’t see any mention if this news on the FoundationDB website, they do have an announcement saying: “We have made the...
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The value of MySQL Support
Years ago when I worked for the MySQL Support organization at the original MySQL AB, we spoke about MySQL Support as insurance and focused on a value proposition similar to that of car insurance. For...
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Illustrating Primary Key models in InnoDB and their impact on disk usage
On a recent engagement I worked with a customer who makes extensive use of UUID() values for their Primary Key and stores it as char(36), and their row count on this example table has grown to over 1...
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The cost of not properly managing your databases
Every day hundreds of millions of dollars are wasted by allowing improperly tuned or misconfigured systems, misunderstood infrastructure, and inefficient IT operations to live and thrive in data...
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More on OpenStack Live and our talks at OpenStack Summit Vancouver
In April and May, Percona will hold and participate in two OpenStack events: OpenStack Live and the OpenStack Summit. Join our talks at these events in Santa Clara and Vancouver for new insights into...
View ArticleTokutek now part of the Percona family
It is my pleasure to announce that Percona has acquired Tokutek and will take over development and support for TokuDB® and TokuMX™ as well as the revolutionary Fractal Tree® indexing technology that...
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