FastAPI python: How to run a thread in the background?

Option 1 You should start your Thread before calling, as is blocking the thread. import time import threading from fastapi import FastAPI import uvicorn app = FastAPI() class BackgroundTasks(threading.Thread): def run(self,*args,**kwargs): while True: print(‘Hello’) time.sleep(5) if __name__ == ‘__main__’: t = BackgroundTasks() t.start(), host=”″, port=8000) You could also start your thread using … Read more

Does an asynchronous call always create/call a new thread?

This is an interesting question. Asynchronous programming is a paradigm of programming that is principally single threaded, i.e. “following one thread of continuous execution”. You refer to javascript, so lets discuss that language, in the environment of a web browser. A web browser runs a single thread of javascript execution in each window, it handles … Read more

How does the JVM terminate daemon threads? or How to write daemon threads that terminate gracefully

I just wrote the following code as a test: public class DaemonThreadPlay { public static void main(String [] args) { Thread daemonThread = new Thread() { public void run() { while (true) { try { System.out.println(“Try block executed”); Thread.sleep(1000l); } catch (Throwable t) { t.printStackTrace(); } } } @Override public void finalize() { System.out.println(“Finalize method … Read more

WPF BackgroundWorker vs. Dispatcher

The main difference between the Dispatcher and other threading methods is that the Dispatcher is not actually multi-threaded. The Dispatcher governs the controls, which need a single thread to function properly; the BeginInvoke method of the Dispatcher queues events for later execution (depending on priority etc.), but still on the same thread. BackgroundWorker on the … Read more

Is it possible to force an existing Java application to use no more than x cores?

It’s called setting CPU affinity, and it’s an OS setting for processes, not specific to Java. On Linux: On Windows: On Mac it doesn’t look like you can set it:

Android Process Scheduling

The following list presents the different types of processes in order of importance (the first process is most important and is killed last): Foreground process Visible process Service process Background process Empty process Note: Android ranks a process at the highest level it can, based upon the importance of the components currently active in the … Read more