Baron is a performance and scalability expert who participates in various database, open-source, and distributed systems communities. He has helped build and scale many large, high-traffic services for Fortune 1000 clients. He has written several books, including O’Reilly’s best-selling High Performance MySQL. Baron has a CS degree from the University of Virginia.

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Database

Quantifying Abnormal Behavior

June 25, 2013

At Velocity last week, I spoke about how we quantify abnormality in a system’s time-series metrics cheaply, in realtime, at high frequency. Note that this is not the same thing as our Adaptive Fault Detection algorithm. Our abnormality algorithm is one of the low-level building …





author:

Database

A Sure-Fire Recipe For Monitoring Disaster

April 9, 2013

In this post I’ll tell a story that will feel familiar to anyone who’s ever monitored MySQL. Here’s a recipe for a threshold-based alert that will go horribly wrong, beyond a shadow of a doubt. You install some package of plugins for monitoring MySQL’s …


author:

Database

Why You Should Almost Never Alert On Thresholds

April 8, 2013

This post is part of an ongoing series on the best practices for effective and insightful database monitoring. Much of what’s covered in these posts is unintuitive, yet vital to understand. Previous posts have covered Why Percentiles Don’t Work the Way You Think; how to avoid …