Rob Janssen

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What We Talk About When We Talk About Performance

Describing performance improvements exists at the intersection of mathematics and linguistics. It is quite common to use incorrect math to describe performance improvements, and it is possible to use incorrect, misleading, or just sub-optimal rhetoric to describe your math. AirTrain Inc.

To Close Or Not To Close

Have you ever wondered if it’s better to “close” a br or input tag like <br /> or if it’s better to just write <br> in HTML5? Or why it’s not correct to write <script src="script.

The art of the error message

The concept of “embracing failure” is big in the tech industry. Fail fast, fail often! is almost an industry mantra. But there’s an everyday type of failure that doesn’t get much attention in the product development process. That’s right. The humble error message.

I’m harvesting credit card numbers and passwords from your site. Here’s how.

The following is a true story. Or maybe it’s just based on a true story. Perhaps it’s not true at all. It’s been a frantic week of security scares?—?it seems like every day there’s a new vulnerability.

The Polly Project

Today we released Polly v5.0 in alpha to Nuget. This is the next step in making Polly a much wider resilience framework for .NET, as Hystrix is for Java. This is an exciting day for us, and one we've been working toward for several months. Not only have we pushed out a major release (v5.

Resilient Systems with Polly.NET

General Probably most of the Web sites and Applications we use or visit today are of a distributed nature and running highly complex infrastructure and using sophisticated Software Design patterns for the Cloud along with factors that can lead to difficulties and failure.

Dapper, Prepared Statements, and Car Tyres

Why Doesn't Dapper Use Prepared Statements? I had a very interesting email in my inbox this week from a Dapper user; I'm not going to duplicate the email here, but it can be boiled down to: My external security consultant is telling me that Dapper is insecure because it doesn't use prepared statem

You're using HttpClient wrong and it is destabilizing your software

I’ve been using HttpClient wrong for years and it finally came back to bite me. My site was unstable and my clients furious, with a simple fix performance improved greatly and the instability disapeared.

How do computers read code?

When you first learned to write code, you probably realized that computers don't really have any common sense. You need to tell a computer exactly what you want. But do you know about all the work the computer does to understand what you mean?Twitter: http

Fast exact integer divisions using floating-point operations

On current processors, integer division is slow. If you need to compute many quotients or remainders, you can be in trouble. You potentially need divisions when programming a circular buffer, a hash table, generating random numbers, shuffling data randomly, sampling from a set, and so forth.

This Read-It-Later-list is just that, bookmarks of stuff I intend to read or have read. I do not necessarily agree with opinions or statements in the bookmarked articles.

This list is compiled from my Pocket list.