Everyone does backups. Usually it’s some nightly batch job that just dumps all MySQL tables into a text file or ordinarily copies the binary files from the data directory to a safe location. Obviously both ways involve much more complex operations than it would seem by my last sentence, but it is not important right [...]
Worse than DDOS
August 18, 2008 By 5 Comments
Today I worked on rather interesting customer problem. Site was subject what was considered DDOS and solution was implemented to protect from it. However in addition to banning the intruders IPs it banned IPs of web services which were very actively used by the application which caused even worse problems by consuming all apache slots [...]
Percona turns two today !
August 1, 2008 By 13 Comments
July 31st 2006 was my last day working for MySQL and August 1st I started what later was incorporated Percona with Vadim joining me September 1st as co-founder. Two years is a significant anniversary for any startup – surviving (and being profitable) for 2 years can be seen as validation of our business model and [...]
Recovering Innodb table Corruption
July 4, 2008 By 21 Comments
Assume you’re running MySQL with Innodb tables and you’ve got crappy hardware, driver bug, kernel bug, unlucky power failure or some rare MySQL bug and some pages in Innodb tablespace got corrupted. In such cases Innodb will typically print something like this: InnoDB: Database page corruption on disk or a failed InnoDB: file read of [...]
Economics of Performance Optimization
March 13, 2008 By 9 Comments
I think every person responsible for Development or Operations of growing application sooner or later have to decide on couple few questions on how to tackle application performance. These questions are: Should we Optimize Application or get more Hardware ? Should we do things ourselves or hire an experts to help us ? The answer [...]
MySQL Support or Support for MySQL ? MySQL Trademark Policies
October 26, 2007 By 11 Comments
What is the difference between “MySQL Support” and “Support for MySQL” ? In my mind there is not much difference in meaning just first one is shorter and I would use it also because how people would search stuff in Google. It turns out however there is significant legal differences – first one would be [...]
New MySQL Community Release Policies published
August 9, 2007 By 9 Comments
Yesterday Kaj Published changes to MySQL Community Release Policies. I knew about them a bit in advance but now they are public I can comment a bit. In general I’m disappointed and think this is moving in the wrong direction, it also makes me to think hard if MySQL is out of more creative solutions [...]
MySQL – to use or not to use
May 28, 2007 By 10 Comments
Reading this slashdot article today and two CIO magazine articles linked from it. Such discussions started at right place at right time always attract a lot of flamers and can be fun to read. What hit me this time is quality of the articles in CIO magazine. If this is what managers suppose to use [...]
MySQL Consulting – Being on your own
February 20, 2007 By 7 Comments
About half a year have passed since me and Vadim have left MySQL to do MySQL Consulting on our own. Bunch of people have been wondering about our experiences so I thought it would be worth to share it here.
Why do you need many apache children ?
February 5, 2007 By 15 Comments
I already wrote kind of about same topic a while ago and now interesting real life case makes me to write again Most Web applications we’re working with have single tier web architecture, meaning there is just single set of apache servers server requests and nothing else – no dedicated server for static content, no [...]
