background-process

What is a good aproach to handle background processes in a NodeJS application? Scenario : After a user posts something to an app I want to crunch the data, request additional data from external resources, etc. All of this is quite time consuming, so I want it out of the req/res loop. Ideal would be to just have a queue of jobs where you can quickly dump a job on and a daemon or task runner will always take the oldest one and process it. In RoR I would have done it with something like Delayed Job. What is the Node equivalent of this API? If you want something lightweight, that runs in the same

I am trying to write a code which runs at background and monitors the copy actions for copying a .mp3 file or a folder containing a .mp3 file { Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard(); if (cb.isDataFlavorAvailable(DataFlavor.javaFileListFlavor)) { try { String name = ""+cb.getData(DataFlavor.javaFileListFlavor); boolean found = false; if (name.toLowerCase().endsWith(".mp3]")) { System.out.println("Is MP3"); found = true; } if (!found) { System.out.println("Is not MP3"); } } catch(UnsupportedFlavorException ex) { ex.printStackTrace(); } catch(IOException ex) { ex

I've seen hundreds of solutions of how to get a NSTimer to run in the background. I know that it is possible, just look at apps like Strava and Runkepper that tracks your time when working out. But what is the best practice solution for doing so? I can't find one unison solution for this. Also, I would like the NSTimer to be used across different UIViewControllers. How is this done as a best practice? Thanks in regards! :) NSTimers don't run in the background. Store the current time and the elapsed time of the timer when you got the background. When you come back to the foreground, you set up

I'm using a third party library "Reachability.swift" https://github.com/ashleymills/Reachability.swift Followed this blog post to identify network event using Notification Center, So the change in network event can be identified dynamically in the foreground https://blog.pusher.com/handling-internet-connection-reachability-swift/ My Requirement:- I need to run a background service that uses Alamofire (Information not needed for alamofire) to push the locally saved SQLite data to the server whenever internet connection status is Active Important note:- iOS Application should not run in the

I've found this method to work with background thread. My question is that I've run a whole process in background thread which include number of methods. Frist method calls the second one and the the second one makes some data and pass it to the third one. -(void)firstMethod dispatch_async(dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^(void){ if(someCondition == 0) { [self secondMethod:myArray]; } } dispatch_async(dispatch_get_main_queue(), ^(void){ [self.navigationController popViewControllerAnimated:YES]; }); }); } -(void)secondMethod:(NSArray *)array { a= a+3; [self

I have a findObjectsInBackgroundWithBlock method in my viewController. Now i want to execute code, but just until this background method is finished. How can i do that? I'm using the swift programming lanuage. Here is some example code that could help you. It is not clear how you would restrict the code (PRE-BACKGROUND CODE) to run only while the background processing has completed. You may want to insert some code in the notification response function either to confirm that that PRE-BACKGROUND CODE is completed or to terminate it. // ParseTestViewController.swift import UIKit import

I've started getting these errors. It was working perfectly on my previous server. using System; using Abp.Dependency; using Abp.Domain.Repositories; using Abp.Threading.BackgroundWorkers; using EMS.IPs; using System.Threading.Tasks.Dataflow; using System.Threading.Tasks; using System.Linq; using EMS.Contacts; using System.Collections.Concurrent; using Abp.Domain.Uow; using System.Collections.Generic; using EMS.EmailValidation; using Microsoft.AspNetCore.SignalR; using KellermanSoftware.NetEmailValidation; using System.Net; using System.Collections; using System.Threading; using System

I've a question about this answer php execute a background process Can anyone provide me a working simple example to try what the answer explains? Thanks in advance! Alberto On linux box only: result.php <?php $cmd = 'for i in {1..5}; do date; sleep 2; done'; $outputfile = '/tmp/result.txt'; $pidfile = '/tmp/result.pid'; exec(sprintf("%s > %s 2>&1 & echo $! >> %s", $cmd, $outputfile, $pidfile)); ?> in command line: php result.php; tail /tmp/result.txt; /* to monitor the results, take 10 seconds to complete */ cat /tmp/result.pid /* the pid registered */ 来源： https://stackoverflow.com/questions