In a recent post, I summarized what I consider to be the minimal topics one should be familiar with in order to do technical work with databases. One thing I left out, except for it being implicitly included in “Hardware…Read More >
I’ve been interviewing and mentoring candidates for technical database positions for almost ten years, and a common question from those who either don’t make it or feel they’re not ready yet to apply to the position they’re looking for is:…Read More >
I recently had the pleasure of discussing CockroachDB on the Datascape Podcast with Chris Presley and I wanted to supplement that episode with a bit more technical information about this database. A deeper look at consensus CockroachDB uses the Raft…Read More >
In a recent post, my colleague and teammate Peter Sylvester explained how we could customize MySQL’s configuration when running it as a Docker container. Today I want to show you how to debug a Dockerized MySQL process. Let me start…Read More >
I was recently discussing benchmarking options for Cassandra with some colleagues and given my background with MySQL, sysbench was the first tool I thought of. Sysbench is a high performance and flexible benchmark tool that can be used to run…Read More >
Having good historial metrics monitoring in place is critical for properly operating, maintaining and troubleshooting database systems, and Percona Monitoring and Management is one of the options we recommend to our clients for this. One common concern among potential users…Read More >
One of the interesting features introduced in MySQL 5.7 is that innodb_buffer_pool_size is a dynamic variable (since 5.7.5, to be more specific). Yet, past experience tells us that just because a variable is dynamic, it does not make it is…Read More >
MySQL Cluster is a highly available, distributed, shared-nothing database with very interesting performance characteristics for some workloads. Among other features, it supports automatic sharding and allows us to bypass the SQL layer if we don’t need it, via the NDB…Read More >
MongoDB’s database profiler lets us collect some performance data about operations happening on a MongoDB instance. In this post, I will show you how we can enable the profiler, what kind of information it can store for us, how to query this…Read More >
Valeriy Kravchuk’s great recent post on using oprofile to profile MySQL mentioned how pt-stalk, the script from Percona Toolkit to capture diagnostics data based on a detected condition, currently does not support the new operf comand, and relies instead on the deprecated and soon…Read More >
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