author:


Networks

An Introduction to SNMP Basics

July 13, 2015

Simple  Network Management  Protocol (SNMP) is  a  popular technology that lets  you  monitor  network  devices such  as switches, routers, servers, printers, and other IP-based devices. While most network and systems admins are familiar with using SNMP, fewer are clear on setting it up on …


author:


Database

Probabilistic Sampling With A Sketch

July 10, 2015

In a previous post, I explained that we observe rich and complex streams of events, something like the following multiplied by a million: And our goal is to choose a sample of those events that can help understand what typical and/or important queries look …


author:


Networks

4 Steps to Create a Wireless Heat Map

July 9, 2015

Wireless heat maps have gotten a lot of press lately, from SolarWinds and the industry at large. There’s a good reason for this. As wireless devices become faster and gain more users, the completely wireless office space becomes a reality for larger and larger organizations. But …




author:


Networks

How To Fix Network Experience Problems

July 1, 2015

If you run a network, you know how complaints start. Lowly users or high-placed executives come to you complaining of lousy bandwidth, applications that freeze mid-transaction, phone calls breaking up, video scrambled, etc. It seems that whatever the cause, it’s your fault. Often, even the …



author:


Database

The Strategic Importance of Database Administration

June 17, 2015

If you draw a diagram of information flow and interaction amongst teams and processes in IT, you’ll probably find that although some parts of the organization are “leaf” or “edge” nodes, the people who manage the data are not. The DBAs would usually be …



author:


Database

Parsing the Redis TCP Protocol

June 5, 2015

When we decided to go beyond just MySQL monitoring, we had a couple of natural next choices. The decision involved engineering effort, the likelihood we’d find MySQL-specific things in our system that would slip our schedule, alignment with existing customers, and the commercial opportunity. …