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RocksDB 101

RocksDB 101

After we announced that Percona offers support for RocksDB, we saw many people looking for more details about this storage engine. Here is a quick list of some of the most frequent questions we get. Q: What is RocksDB? A: Quoting the homepage of the project: RocksDB...

Percona Live Amsterdam Recap

This year’s Percona Live for Europe proved to be a turning point for the conference. First and most obvious was the change of venue. After several years in London we decided to move the show to Amsterdam and we were quite pleased. The weather was not much different...
Online DDL and Percona XtraDB Cluster 5.6

Online DDL and Percona XtraDB Cluster 5.6

I presented a talk at Percona Live Amsterdam a few weeks ago (simple recipes for your Galera cluster), and one of the topics was schema changes. I discussed the drawbacks and benefits of Total Order Isolation (TOI), Rolling Schema Upgrades (RSU) and...
When mysqld kills mysqld

When mysqld kills mysqld

The other day a colleague and friend of mine, Peter Boros, had a case where one of our clients had to track down the process shutting down MySQL. This blog is based on the discussion we had about that internally. Our client wanted Peter to identify the culprit behind...

VividCortex Agent Benchmark

Intro The purpose of this project was to measure the potential overhead of VividCortex Agent, which is used by VividCortex.com database monitoring system. This benchmark is part of a consulting engagement with VividCortex and paid by the customer. The assumption is...