I need to make about 60 HTTP requests. In the first case, I did not use an asynchronous request and the speed was about 1.5 minutes. In the second case, I used an asynchronous request and the speed did not change either and was about 1.5 minutes. Please see my code. Maybe I’m not doing the asynchronous …
Tag: asynchronous
Asynchronous Programming and Reactive Programming
This question is in my mind about a year. Actually are there any differences in Asysnchronus and Non-blocking. When we call the blocking part in our code then it becomes blocking which is synchronous and at the same time it will not be non-blocking. If we are creating another thread apart from main thread to …
JNI 8 C++ : Thread attach and detach And async callback
How to async call Java method from std::thread ? Let’s assuming this is a IM bot sdk, Because it’s logic basicly a IM bot sdk. The most importtant is: How to async call java method and callback native. There is logic flow at the bottom, Maybe helpful. For example: Receive message A “backup&#…
How to run async bash command in java?
I’m trying to run an async bash command from a java file and wait for it to finish before I continue the java code execution. At this moment I’ve tried using Callable like so: and I call it like so: Thanks!!! Answer An easier way is to use Java 9+ .onExit(): If you want to block anyway, use .waitF…
CompletableFuture runAsync vs supplyAsync, when to choose one over the other?
What is the rationale for choosing one over the other? Only difference I could infer after reading the documentation is that runAsync takes Runnable as an input parameter and supplyAsync takes Supplier as an input parameter. This stackoverflow post discusses the motivation behind using Supplier with supplyAsy…
Linkedin parseq. How to run task after task?
I’m using parseq framework for asynchronous computation. Consider the following code. It first queries the content of google.com and then map the content to it’s length. Finally, the length is printed. The problem is that only the first task is ran. Why? Answer I was able to solve your problem wit…
What advantage is there to using Spring @Async vs. CompleteableFuture directly?
What’s the advantage of using Spring Async vs. Just returning the CompletableFuture on your own? Answer Your application is managed by the container. Since it’s discouraged to spawn Threads on you own, you can let the container inject a managed Executor.
Better way to wait to receive Async messages in ActiveMQ
I have used ActiveMQ to Send messages and Receive them Asynchronously. There, I’m having a problem with deciding the best way to waiting in the for messages. Sleeping thread in a loop is one option. But it feels doesn’t look good for me. Can anyone suggest a better way for this. AsyncReceiver.java…
Difference between CompletableFuture, Future and RxJava’s Observable
I would like to know the difference between CompletableFuture,Future and Observable RxJava. What I know is all are asynchronous but Future.get() blocks the thread CompletableFuture gives the callback methods RxJava Observable — similar to CompletableFuture with other benefits(not sure) For example: if c…
Java async MySQL queries
First of all, I don’t have much experience with thread safe programming. I have a MySQL class, and I want to use one instance in multiple threads to prevent blocking code in the main thread. I read about connection pooling but I want to keep it as simple as it is. This is my MySQL class: Is it possible …