Database

Query Digesting and String Quoting Syntax in SQL

02/16/15 One of the interesting challenges in writing a system like SolarWinds® Database Performance Monitor (DPM) is writing a query digesting algorithm that deals with all of the…

Compressed Messages Using Kafka

02/11/15 First things first: A big shout out to the engineers at Shopify who work on Sarama, the Go Client we use for Kafka – they do a great job on the library! Alright, now to to…

How Database Performance Monitor Measures Queries

02/10/15 We often get questions about how we measure queries inside MySQL (and now PostgreSQL too). Many of these questions reveal assumptions about the metrics we provide and our …

Distributed and Diverse: The New Reality of Modern Data Persistence

01/23/15 We create applications in an age of simple, powerful, flexible databases that do magic for us. There’s a large variety of modern databases that supply just what’s needed f…

Securing JSON APIs With Wrapper Objects

01/21/15 Security is a top priority. Leading companies such as Zappos, Dyn, and Etsy use Database Performance Monitor (DPM), a cloud-based database performance management service t…

Go’s Connection Pool, Retries, and Timeouts

01/19/15 This is a story of intermittent 500 Internal Server errors from APIs, that ended up being caused by a hardcoded constant in Go’s database/sql package. I’ll mostly spare yo…

Monitor MySQL Database Users with VividCortex

01/08/15 VividCortex now supports per-user metrics in Top Queries, so you can monitor MySQL database user activity in detail. By changing the Rank menu from Queries to Users you ca…

New reCaptcha support in angular-recaptcha

12/23/14 Google released a new reCaptcha that is “tough on bots, easy on humans.” It is really simple to use, and it has greatly improved the security against robots and other hack…

Find Queries That Lack Indexes

12/17/14 It’s an ancient tradition amongst MySQL DBAs to analyze slow query log files and sort the results by the so-called “index ratio” to find badly indexed queries. The “index …

In Case You Missed It – Building a Time-Series Database in MySQL

12/16/14 In this webinar, Baron Schwartz explains how VividCortex has used MySQL to support a large-scale, high-velocity time-series database in the AWS cloud. If you did not have …

MySQL Error Codes Out Of Context

12/11/14 In the wrong context, almost anything can be funny, and MySQL’s error codes are no exception. A few weeks ago, things got a little loopy as we discovered some definitions …

Why Data Performance Monitor is Cheaper Than DIY Open-Source

12/04/14 Talk to someone who runs monitoring systems at a company with more than a few servers and you’ll quickly find out that scaling their monitoring systems is far from a minor…