Baron Schwartz

What Privileges Does EXPLAIN Require in MySQL?

07/28/14 Here’s a simple question that I wasn’t able to solve with Google or the MySQL documentation (which is normally excellent). Perhaps it’s mentioned somewhere, but I can’t fi…

MySQL Type Conversion Rules

07/21/14 When you send a query to MySQL, you usually don’t need to think explicitly about the types of the expressions in your query. If you compare this to a lot of programming la…

4 Things To Know About MySQL Prepared Statements

07/10/14 While writing our TCP stream reassembly and MySQL protocol reverse-engineering algorithms, a few finer points of the MySQL protocol and internals came up. None of this is …

Composition Instead of Inheritance in Go

07/01/14 Looking back, I find object-oriented programming in languages like Java and C++ to be incredibly confusing. There are so many special rules and things to know. By contrast…

Discovering Query Bugs by TCP Inspection

06/23/14 The MySQL wire protocol includes useful result data and metadata, such as warnings and errors raised by the query. These often indicate bugs that will cause problems you m…

Adaptive Fault Detection Versus Anomaly Detection

04/24/14 We get a lot of questions about what our Adaptive Fault Detection algorithm really is and how it works. Although I can’t tell you exact details, I want to explain a few th…

Multi-Threaded Replication in MySQL

03/17/14 For years, people lamented that MySQL’s replication was single-threaded. Peter, Vadim, and I griped about this in High Performance MySQL for two whole editions, as well as…

Performance Schema, Slow Query Log, and TCP Decoding

02/25/14 Peter Zaitsev posted Percona’s answer to the question, “why use the slow query log instead of the PERFORMANCESCHEMA tables to gather information about query execution and …

A Tale of Two Memory Leaks in Go

01/15/14 In this post I’ll illustrate two ways I’ve accidentally caused slow but steady memory consumption in Go programs. The phrase “memory leak” isn’t really accurate, but I can…

Multitick: multiple-subscriber time.Ticker in Go

12/17/13 Many of our agent programs have several independent worker routines that all need to be timed on clock ticks, sometimes with a specific time offset. We recently open-sourc…

Analysis of PayPal’s Node-vs-Java benchmarks

12/09/13 I was interested in the data shown in PayPal’s blog post on switching from Java to Node.js, for two reasons. First, at a glance both sets of benchmark data looked very cle…

How to write Go packages coders will love

12/03/13 This post was featured in our July 2015 anthology of most popular SolarWinds Database Performance Monitor (DPM) blog posts of all time. One of the patterns I’ve found in t…