Skip to main content

Serve static content from a cookieless domain

While performance testing an Angular.js website, I ran the site through a few benchmarking tools like Google PageSpeed Insights, Yahoo’s YSlow, and so on…

One of the recommendations that these tools returned is ‘Serve static content from a cookieless domain’. Although there is some discussion going on if this recommendation actually makes sense, I spend some time reconfiguring IIS to get this working so I can measure the impact myself.

Here are the steps I took to get it working:

  • Inside IIS I configured 2 websites:

image

    • A Default Web Site that listens on port 80 and has a custom host header configured(I used www.test.com as an example)

image

    • A second website CDN that also listens on port 80 and has a different custom header configured(I used cdn.test.com for this one)

image

  • For the CDN site, disable ASP.NET session state, this prevents cookies from being returned by ASP.NET.
    • Click on Session State.
    • Set the Session State Mode on Not enabled and click on Apply.

image

image

  • Copy your static content(images, css, javascript) over to the CDN site
  • Inside your website, change the urls for the static content to point to the CDN site.
  • Run your application
    • If you look at the requests to the default website, you see that cookies are sent with the request:

image

    • But if we look at a request to the CDN, no cookies are included:

image

Labels:

Popular posts from this blog

Azure DevOps/ GitHub emoji

I’m really bad at remembering emoji’s. So here is cheat sheet with all emoji’s that can be used in tools that support the github emoji markdown markup: All credits go to rcaviers who created this list.
Read more

Kubernetes–Limit your environmental impact

Reducing the carbon footprint and CO2 emission of our (cloud) workloads, is a responsibility of all of us. If you are running a Kubernetes cluster, have a look at Kube-Green . kube-green is a simple Kubernetes operator that automatically shuts down (some of) your pods when you don't need them. A single pod produces about 11 Kg CO2eq per year( here the calculation). Reason enough to give it a try! Installing kube-green in your cluster The easiest way to install the operator in your cluster is through kubectl. We first need to install a cert-manager: kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.5/cert-manager.yaml Remark: Wait a minute before you continue as it can take some time before the cert-manager is up & running inside your cluster. Now we can install the kube-green operator: kubectl apply -f https://github.com/kube-green/kube-green/releases/latest/download/kube-green.yaml Now in the namespace where we want t...
Read more

DevToys–A swiss army knife for developers

As a developer there are a lot of small tasks you need to do as part of your coding, debugging and testing activities.  DevToys is an offline windows app that tries to help you with these tasks. Instead of using different websites you get a fully offline experience offering help for a large list of tasks. Many tools are available. Here is the current list: Converters JSON <> YAML Timestamp Number Base Cron Parser Encoders / Decoders HTML URL Base64 Text & Image GZip JWT Decoder Formatters JSON SQL XML Generators Hash (MD5, SHA1, SHA256, SHA512) UUID 1 and 4 Lorem Ipsum Checksum Text Escape / Unescape Inspector & Case Converter Regex Tester Text Comparer XML Validator Markdown Preview Graphic Col...
Read more