The tables in PERFORMANCE_SCHEMA (P_S) are not actually tables. You should not think of them as tables, even if your SQL works on them. You should not JOIN them, and you should not GROUP or ORDER BY them. Unlocked memory buffers without indexes The stuff in P_S has been created with “keep the impact on […]
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At work, I am in an ongoing discussion with a number of people on the Observability of Outliers. It started with the age-old question “How do I find slow queries in my application?” aka “What would I want from tooling to get that data and where should that tooling sit?” As a developer, I just […]
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I came to Mail.ru Group in 2013, and I required a queue for one task. First of all, I decided to check what the company had already got. They told me they had this Tarantool product, and I checked how it worked and decided that adding a queue broker to it could work perfectly well. […]
Read MoreI am always surprised to learn something new whenever I talk to a member of the open-source community. No matter how much I think I have heard of every use case there is for Liquibase (and database change management in general), I always hear something that makes this space still feel new. There’s always something […]
Read MoreAt MayaData we like new tech. Tech that makes our databases perform better. Tech like lockless ring buffers, NVMe-oF, and Kubernetes. In this blog post we’re going to see those technologies at work to give us awesome block storage performance with flexibility and simple operations. Mayastor + SPDK + NVMe = fast databases Mayastor is […]
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Percona Live Online Agenda Slot: Wed 21 Oct • New York 5:00 a.m. • London 10:00 a.m. • New Delhi 2:30 p.m. • Singapore 5:00 p.m. Abstract MySQL Document Store enables us to work with SQL relational tables and schema-less JSON collections. So instead of having a mixed bag of databases, you can just rely […]
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