I'm not sure about using redis as a queue, seems like blocking operations block the connection? Also, when using BROP to monitor multiple queues, you end up shuffling the queue names so the queue at the front of this list doesn't take priority (round robin?)
Or do you spin up multiple connections and balance the queues across them? It's a multiplexing problem (reminds me of HTTP/2).
I'm using System.Threading.Channels and Redis to expose a really nuget IAsyncEnumerable<T> implementation. Then using static interfaces to provide the RedisValue -> T.
Here's how that interface is used. You can implement it on your message types and use this method.
Then there's the complicated logic to create redis connections and run BROP commands against it and populate the appropriate channel.

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More from @davidfowl

Feb 6
Lets talk about events. We want to write some code that reacts when something happens. This pattern exists in many domains from UI programming to IoT to serverless. What do the programming patterns for this look like today in #dotnet and #csharp?
We create a button (imagine this was referenced by a form or some UI component), then hook up an event handler and write to the console when a button click event happens. This is the one of the most popular and idiomatic event handling paradigms in .NET today.
It's existed for years and years in many different programming languages and domains. There may or may not be data associated with these events.
Read 18 tweets
Oct 16, 2021
Our hackathon project this year was working on making it easier to incrementally migrate large ASP.NET projects to https://t.co/4PmXMQN7SX Core. Here's the MVC music store app: #dotnet #aspnetcore Image
Most pages are running on .NET Framework but the shopping cart is managed by ASP.NET Core. This application is 10 years old and using both technologies at the same time, sharing source where possible. Image
This is made possible because both applications are running in the same IIS pipeline using different modules. It's sharing session and auth with the existing application without many changes to it. The ASP.NET Core application is part of the larger application.
Read 6 tweets
Oct 3, 2021
.NET has 4 built-in dictionary/map types:
- Hashtable
- Dictionary
- ConcurrentDictionary
- ImmutableDictionary

There’s no guidance on when to use what, mostly individual documentation on each implementation.

#dotnet
ConcurrentDictionary - Good read speed even in the face of concurrency, but it’s a heavyweight object to create and slower to update.

Dictionary with lock - Poor read speed lightweight to create and “medium” update speed.
Dictionary as immutable object - best read speed and lightweight to create but heavy update. Copy and modify on mutation e.g. new Dictionary(old).Add(key, value)
Read 7 tweets
Sep 30, 2021
Reflecting on my immigration journey this morning and for anyone else in the same situation it was:
F1/OPT 1 year (student visa) -> H1-B 5 years (work via) -> Green Card 7 years (permanent resident) -> Citizen yesterday. No more immigration anxiety 😅
Since being on a student visa I've always been worried about not being able to enter the US for some random reason or the other (plus being a black immigrant). Travelling with an excess amount of paperwork to prove you belong here.
When I joined Microsoft in 2008, there were huge layoffs and I was sure I was going to be in that set of people. Why not lay off the new employees (and immigrants at that)? It didn't happen and I was thankful. Microsoft sponsored my H1-B and Green card.
Read 4 tweets
Sep 27, 2021
If you are queuing background jobs/work items today in your .NET applications, how are you doing it and what are you using it for? #dotnet #aspnetcore
What about non-durable background work?
Is anyone using the DurableTasks for job scheduling? github.com/Azure/durablet…
Read 4 tweets
Sep 25, 2021
The biggest problem with async await is the “colored functions” problem brilliantly explained by this article journal.stuffwithstuff.com/2015/02/01/wha…. It’s a never ending problem because everything can’t be async and it’s viral. It’s not a new problem though, it’s always been this way.
JavaScript has an easier time because blocking always meant you’d destroy the browsers UI thread. That model naturally made it nicely non blocking on the server side.
Then golang chose a different direction and did go routines. Not conceptually different but the big thing it solves is the “virality”problem. Java’s Loom is also headed this direction. It’s easy to say that .NET should follow but it’s never easy…
Read 13 tweets

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