Alexandre Vaniachine

Alexandre is an open source enthusiast experienced in troubleshooting and resolving scalability issues across the full software stack. In industry and academia, he scaled up data processing from terabytes to petabytes, while minimizing data losses below acceptable level. Early in his career Alexandre pioneered deployment of MySQL databases on Virtual Machines. Alexandre is a Senior Database Administrator at Five9, an industry-leading provider of cloud contact center solutions.

Unexpected Stalled Upgrade to MySQL 8.0

A multi-tenant database is a database that serves multiple clients, or tenants, who share the same database schema but have separate data sets. One way to achieve data isolation for each client is to ...

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Unexpected slow ALTER TABLE in MySQL 5.7

Usually one would expect that ALTER TABLE with ALGORITHM=COPY will be slower than the default ALGORITHM=INPLACE. In this blog post we describe the case when this is not so....

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