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MySQL Cluster – Part 1: Pre-Sales Training in Boston

I went to Boston for 2 days of MySQL Cluster pre-sales training from Oracle at the old Sun campus on Network Drive in Burlington. Although MySQL is one of the world’s most popular databases, MySQL...

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MySQL Cluster – Part 2: Oracle Consulting Engagement

I met locally for 4 days with an Oracle Consulting employee from their Open Source group (Oracle Linux, MySQL Cluster, Oracle RAC.) The project we’re considering MySQL Cluster for is porting a small...

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MySQL Cluster – Part 3: History and Architecture

MySQL Cluster History Network Database (NDB) Cluster was originally developed at a startup of Ericsson called Alzato. After the project funding was cut in 2004, MySQL AB bought it and renamed it “MySQL...

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Percona Live MySQL Conference Santa Clara 2014

The Percona Live MySQL Conference was held once again in Santa Clara from April 1-4, 2014. Executive Summary: Percona hosted another excellent conference, with 1,150 attendees from 43 countries plus a...

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Advanced Liquibase Techniques

I recently did some work with liquibase. Here’s some techniques for advanced users to workaround limitations to calculate query cost. Liquibase Introduction Liquibase is an Open Source (Apache 2.0...

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SVLUG: Devops and Release Canaries with Linux, CloudStack and MySQL Cluster

I did a talk at the Silicon Valley Linux Users Group (SVLUG) tonite on “Devops and Release Canaries with Linux, CloudStack and MySQL Cluster.” Thanks again to Symantec for hosting.

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MySQL 5.6 Views and Stored Procedures Tips

I recently tuned an existing application that used dozens of views and hundreds of stored procedures using MySQL 5.6. There seems to be three attitudes towards using views and stored procedures (SPs)...

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MySQL Blackhole Storage Engine for Fun and Profit

Recently I did some work with MySQL and MySQL Cluster, where the dev and test environments ran on CloudStack VMs, and a reporting server ran on AWS EC2. The MySQL Blackhole storage engine could have...

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Percona Clustercheck Improved Error Handling Patch

Here’s my Github pull request for improved error handling in Percona’s clustercheck utility, used by haproxy for health-checking a Percona XtraDB Cluster. It adds two features: 401 Unauthorized...

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Poor Man’s Profiling with the Linux ts Command

Sometimes when you’re investigating server performance issues, you don’t have the luxury of a full development suite installed with tools like a profiler. It turns out that the linux ts command,...

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Notes for Installing Percona Xtradb Cluster 5.7 on CentOS 5

Percona supports Percona Xtradb Cluster 5.7 on CentOS 6 and CentOS 7, but not CentOS 5. You can install the RPMs or tarball binary, but on start will see various package dependencies that can’t be...

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Perl, DBI and MySQL utf8mb4 Character Set Support

MySQL’s modern UTF-8 encoding is named utf8mb4 (4 bytes), not utf8 (3 bytes.) For new applications, especially web, you should start with utf8mb4. For existing applications, you need to decide if an...

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Internet Latency and Multi-Master Database Transactions

There’s 2 common misconceptions in engineering West Coast – East Coast data centers: that packets travel at the speed of light that database transactions must be 2-phase commit, and two masters cannot...

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PSA: Intel and AMD Security Bugs and the DBA

There’s at least 4 problems related to the on-going Meltdown and Spectre serious CPU security bugs (AWS announcement) that impact the Database Administrator (DBA): in shared environments, like AWS or...

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Table Partitions in MySQL and Postgresql

We’re lucky to have two great Open Source databases, MySQL and Postgresql. One of the killer features in both MySQL and Postgresql is table partitions – for example, most Silicon Valley adtech...

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Postgresql vs MySQL in the Enterprise

There are few people who have used both MySQL and Postgresql in production at scale. Both are great Open Source databases, so I thought I’d add some comments on both based on my experience. Feature...

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