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Facebook MySQL database engineers ready for Percona Live London 2014

 | October 30, 2014 |  Posted In: MySQL, Percona Live

With 1.28 billion active users, Facebook MySQL database engineers are active and extremely valuable contributors to the global MySQL community. So naturally they are also active participants of Percona Live MySQL conferences! And next week’s Percona Live London 2014 (Nov. 3-4) is no exception. (Register now and use the promotional code “Facebook” to save £30!) […]

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How to deal with MySQL deadlocks

 | October 28, 2014 |  Posted In: InnoDB, Insight for DBAs, MySQL, Percona Server

A deadlock in MySQL happens when two or more transactions mutually hold and request for locks, creating a cycle of dependencies. In a transaction system, deadlocks are a fact of life and not completely avoidable. InnoDB automatically detects transaction deadlocks, rollbacks a transaction immediately and returns an error. It uses a metric to pick the […]

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MySQL community set to meet at Percona Live London 2014

 | October 22, 2014 |  Posted In: MySQL, Percona Live

The countdown is on for Europe’s largest annual MySQL event, Percona Live London 2014. The two days of technical tutorials and sessions, November 3-4, will focus on the latest MySQL industry trends, news, best practices – and a look at what’s on the near- and long-term horizon within the global MySQL ecosystem. Percona Live London […]

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Percona XtraDB Cluster: How to run a 2-node cluster on a single server

 | October 21, 2014 |  Posted In: MySQL, Percona XtraDB Cluster

I reckon there’s little sense in running 2 or more Percona XtraDB Cluster (PXC) nodes in a single physical server other than for educational and testing purposes – but doing so is still useful in those cases. The most popular way of achieving this seems to be with server virtualization, such as making use of Vagrant boxes. […]

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Innodb transaction history often hides dangerous ‘debt’

 | October 17, 2014 |  Posted In: MySQL, Percona Cloud Tools, Percona Server

In many write-intensive workloads Innodb/XtraDB storage engines you may see hidden and dangerous “debt” being accumulated – unpurged transaction “history” which if not kept in check over time will cause serve performance regression or will take all free space and cause an outage. Let’s talk about where it comes from and what can you do […]

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