Tag: General
All the articles with the tag "General".
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Disabling session affinity in Azure App Service Web Apps (Websites)
In one of our production systems, we’re using Azure Websites to host a back-end web API. It runs on several machines and benefits from the automatic load balancing we get on Azure Websites. When going through request logs, however, we discovered that of these several machines a few were getting a lot of traffic, some got less and one even only got hit by our monitoring system and no other traffic. That sucks! In our back-end web API we’re not using any session state or other techniques where we’d expect the same client to always end up on the same server. Ideally, we want round-robin load balancing, distributing traffic across machines as much as possible. How to do this with Azure Websites?
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Working with a private npm registry in Azure Web Apps
Using Azure Web Apps, we can deploy and host Node applications quite easily. But what to do with packages the site depends on? Do we have to upload them manually to Azure Web Apps? Include them in our Git repository? None of that: we just have to make sure our app’s package,json is checked in so that Azure Web Apps can install them during deployment. Let’s see how.
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Writing and distributing Roslyn analyzers with MyGet
Pretty sweet: MyGet just announced Vsix support has been enabled for all MyGet customers! I wanted to work on a fun example for this new feature and came up with this: how can we use MyGet to build and distribute a Roslyn analyzer and code fix? Let’s see. Roslyn analyzers and code fixes allow development teams and individuals to enforce certain rules within a code base. Using code fixes, it’s also possible to provide automated “fixes” for issues found in code. When writing code that utilizes DateTime, it’s often best to use DateTime.UtcNow instead of DateTime.Now. The first uses UTC timezone, while the latter uses the local time zone of the computer the code runs on, often introducing nasty time-related bugs. Let’s write an analyzer that detects usage of DateTime.Now!
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Domain Routing and resolving current tenant with ASP.NET MVC 6 / ASP.NET 5
So you’re building a multi-tenant application. And just like many multi-tenant applications out there, the application will use a single (sub)domain per tenant and the application will use that to select the correct database connection, render the correct stylesheet and so on. Great! But how to do this with ASP.NET MVC 6? A few years back, I wrote about ASP.NET MVC Domain Routing. It seems that post was more popular than I thought, as people have been asking me how to do this with the new ASP.NET MVC 6. In this blog post, I’ll do exactly that, as well as provide an alternative way of resolving the current tenant based on the current request URL.
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There is no good mobile operating system
I’m back on Windows Phone. If you follow me on Twitter, you may have read in the past weeks that I switched from being a Windows Phone user to being an Android user. Having been on the platform since before Windows Phone 7 was RTM, I found the operating system was getting slower and slower and less stable on my Nokia Lumia 620. So when I saw a shiny Android being fast, stable and having all the apps I needed, I was sold. Until today, when I switched back to a Windows Phone device. And maybe I’ll switch back again.
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Could not load file or assembly… NuGet Assembly Redirects
When working in larger projects, you will sometimes encounter errors similar to this one: “Could not load file or assembly 'Newtonsoft.Json, Version=4.5.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies. The system cannot find the file specified.” Or how about this one? “System.IO.FileLoadException : Could not load file or assembly 'Moq, Version=3.1.416.3, Culture=neutral, PublicKeyToken=69f491c39445e920' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)”
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Automatically strong name signing NuGet packages
Some developers prefer to strong name sign their assemblies. Signing them also means that the dependencies that are consumed must be signed. Not all third-party dependencies are signed, though, for example when consuming packages from NuGet. Some are signed, some are unsigned, and the only way to know is when at compile time when we see this: That’s right: a signed assembly cannot consume an unsigned one. Now what if we really need that dependency but don’t want to lose the fact that we can easily update it using NuGet… Turns out there is a NuGet package for that!
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Developing for the Tessel with WebStorm
In a previous post, I mentioned that (finally) my Tessel arrived, “an internet-connected microcontroller programmable in JavaScript”. I like WebStorm a lot as an IDE, and since the Tessel runs on JavaScript code (via node), why not see if WebStorm can be more than just an editor for Tessel development… The Tessel runs JavaScript, so naturally a JavaScript IDE like WebStorm will be splendid at that part. It provides a project system, code completion, navigation, inspections to check whether my code is as it should be (which from the screenshot below, it is not, yet ;-)) and so on.
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Getting Started with the Tessel
Somewhere last year (I honestly no longer remember when), I saw a few tweets that piqued my interest: a crowdfunding project for the Tessel, “an internet-connected microcontroller programmable in JavaScript”. Since everyone was doing Arduino and Netduino and JavaScript is not the worst language ever, I thought: let’s give these guys a bit of money! A few months later, they reached their goal and it seemed Tessel was going to production. Technical Machine, the company behind the device, sent status e-mails on their production process every couple of weeks and eventually after some delays, there it was!
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Microsoft Azure cloud plugin for TeamCity (dabbling in Java code)
If you follow me on Twitter, you may have seen me in several stages of anger at Java. After two weeks of learning, experimenting, coding and even getting it all to compile, I’m proud to announce an inital very early preview of my Microsoft Azure cloud plugin for TeamCity. This plugin provides Microsoft Azure cloud support for TeamCity. By configuring a Microsoft Azure cloud in TeamCity, a set of known virtual build agents can be started and stopped on demand by the TeamCity server so we can benefit from Microsoft Azure’s cost model (a stopped VM is almost free) and scaling model (only start new instances when we need them).