flux | Middlelayer for controlling lux devices & more : jackd

I am trying to understand how JavaRx's Flux.merge and switchIfEmpty work together in regards to the below code as I am a bit confused on results I am seeing which is no doubt the result of my not fully grasping Java RX.

My question is ... If the call to wOneRepository... returns an empty list or the call to wTwoRepository... returns an empty list, will the switchIfEmpty code get executed? Or will it only get executed if both calls return an empty list?

There is a Flux. What is the natural way of converting it to Mono?

in the controller, I save the object. the saveOrUpdateUser method returns mono. but the redirect is faster than the object is saved to the database. Since I do not get this object in another method where the redirect occurs.

I'm beginner in Project Reactor and think it's pretty easy, but I can't find the solution. I have N expensive tasks to do, and I want to implement something like Bounded Semaphore in Java (do not request next element until current count of running task less than K). Shortly: complete all tasks, but no more K tasks at the same time

My project uses MapStruct successfully when it does not include Flux or Flow streams. When I try to generate a mapper with a Flow or Flux, I receive an error: "error: The return type Flow is an abstract class or interface." Since Flow and Flux are interfaces, is there a way to still use MapStruct or do I have to roll my own mapper in this use-case?

Thank you for your comments and time

I'm trying to learn Recurrent Neural Networks (RNN) with Flux.jl in Julia by following along some tutorials, like Char RNN from the FluxML/model-zoo.

I managed to build and train a model containing some RNN cells, but am failing to evaluate the model after training.

Can someone point out what I'm missing for this code to evaluate a simple (untrained) RNN?

In my app I use retrofit2(2.9.0) with OkHttp3(3.14.4). I want to add tls client certificate to all of my requests to some api. I've got the certificate in a .p12 file. I read the file, loaded into X509Certificate class then I used the .addTrustedCertificate(certificate) method. The certificate is correct I tried it using curl. Unfortunately when I run the code I get an exception.

I am trying to do following operations on Flux/Publisher which can only be read once ( think database results which can be read once). But, this question is generic enough that it can be answered in functional programming context without reactor knowledge.

1. count unique item
2. check if an element exists
3. Don't call the publisher/flux generator multiple times.

I have a potentially long-running Flux that I'd like to stop after a certain duration has passed. I've found several methods of doing this, however what I'm struggling with is how to be able to tell that the Flux timed out rather than just completed naturally.

Sample (very simple) code: