As Wes Dyer put very elegantly:
Ok ok, I know that’s not an exact quote, but I’m sure this is what he intended to say in the first instance :-P
Anyhow, the IObservable<T>.Retry method has all the same features of its Repeat sister method, in that:
1. You can invoke it as extension method:
var zs = xs.Retry(3);
or as static method:
var zs = Observable.Retry(xs, 3);
2. If you don’t give it a count, it’ll retry indefinitely
3. xs.Retry(1) subscribes to xs only once, and xs.Retry(0) will not subscribe to xs at all.
Only this time, the repetition of the observable collection only happens on exception. So, if you take the illustration from the previous post and swap the colours around and you will arrive at a pretty accurate illustration of how Retry works:
I’m an AWS Serverless Hero and the author of Production-Ready Serverless. I have run production workload at scale in AWS for nearly 10 years and I have been an architect or principal engineer with a variety of industries ranging from banking, e-commerce, sports streaming to mobile gaming. I currently work as an independent consultant focused on AWS and serverless.
Here is a complete list of all my posts on serverless and AWS Lambda. In the meantime, here are a few of my most popular blog posts.
- Lambda optimization tip – enable HTTP keep-alive
- You are thinking about serverless costs all wrong
- Many faced threats to Serverless security
- We can do better than percentile latencies
- I’m afraid you’re thinking about AWS Lambda cold starts all wrong
- Yubl’s road to Serverless
- AWS Lambda – should you have few monolithic functions or many single-purposed functions?
- AWS Lambda – compare coldstart time with different languages, memory and code sizes
- Guys, we’re doing pagination wrong