Passing a cancellation token to an IAsyncEnumerable

I talked about the concept of asynchronous streams before. Thanks to the introduction of the IAsyncEnumerable interface, it allowed us to combine the richness of LINQ with the readibility of async-await to asynchronously access databases, microservices and remote APIs.

As enumerating async streams will typically result in remote asynchronous operations it can take a while to complete. I was wondering how we could cancel these async operations?

To support this use case, IAsyncEnumerable has an extension method ‘WithCancellation()’. The CancellationToken will be passed on to the IAsyncEnumerable.GetEnumerator method.

More information about what’s happening behind the scenes can be found here.

Remark: There are some further improvements on the way in ASP.NET Core 6 regarding consuming IAsyncEnumerable streams as mentioned in this post: https://www.tpeczek.com/2021/07/aspnet-core-6-and-iasyncenumerable.html.

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.

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

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 Color B

The art of simplicity

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