Zmanda specializes in backup and recovery solutions. First they gave the world Amanda, and now they've given MySQL users a new reason to rejoice with the launch of Zmanda Recovery Manager (ZRM) for MySQL. I recently got to speak to Paddy Sreenivasan, the Vice President of Engineering and co-founder of Zmanda Inc., amidst his busy schedule, about what they do and why MySQL users should be jumping towards ZRM for MySQL for all their backup & recovery needs.
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This tutorial gives you a practical introduction to MySQL 5 Application
Development using the MYSQL Connector for .NET with Microsoft Visual Studio.NET 2005 and how to build a simple Database Application using VC# and MySQL 5.
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Introduction: Eventually every database system hit its limits. Especially on the Internet, where you have millions of users which theoretically access your database simultaneously, eventually your IO system will be a bottleneck.
Conventional solutions: In general, as a first step, MySQL Replication is used to scale-out in such a situation. MySQL Replication scales very well when you have a high read/write (r/w) ratio. The higher the better. But also such a MySQL Replication system hits its limits when you have a huge amount of (write) access. Because database systems have random disk access, it's not the throughput of your IO system that's relevant but the IO per second (random seek). You can scale this in a very limited way by adding more disks to your IO system, but here too you eventually hit a limit (price).
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If you've spent any amount of time on the forums, you probably will have recognized Brian among the forum users who most frequently answer posts -- particularly SQL and performance-related questions. Some time ago, I had a chance to ask Brian a little bit about his experience writing Phorum, about his thoughts on open source and MySQL in particular, and on his vision for Phorum in the future...
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Webyog is the company behind the popular SQLyog GUI tool for managing and developing MySQL databases. They have a great history of partnership with MySQL and, recently, decided to open source part of their product line. I had a chance to interview Rohit Nadhani, co-founder of Webyog, about their decision to move to open source, the changes they've made to the code as a result of that move, and various other things.
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