You can run a process in background by appending & in the end. And then use the postscript hook that npm offers us, in order to kill the background process. “scripts”: { “web-server”: “http-server -p 7777 httpdocs &”, “pretest”: “gulp build-httpdocs && npm run web-server”, “test”: “mocha spec.js”, “posttest”: “pkill -f http-server” } But what … Read more
You should definitely check out the following Railscasts: http://railscasts.com/episodes/127-rake-in-background http://railscasts.com/episodes/128-starling-and-workling http://railscasts.com/episodes/129-custom-daemon http://railscasts.com/episodes/366-sidekiq They explain how to run background processes in Rails in every possible way (with or without a queue …)
For the sake of providing an answer to this question, even though it is already self answered… “If you use the newer Core Motion API, you can receive updates in the background.” Here is an example: – (void)startAccelerationCollection { [self.motionManager startAccelerometerUpdatesToQueue:[[NSOperationQueue alloc] init] withHandler:^(CMAccelerometerData *data, NSError *error) { dispatch_async(dispatch_get_main_queue(), ^{ [self.accelerometerReadings addObject:data]; }); }]; }
On Windows, you can run a Python script in the background using the pythonw.exe executable, which will run your program with no visible process or way to interact with it. You also cannot terminate it without a system monitor. More information on pythonw.exe can be found in the answers to the question: pythonw.exe or python.exe?
You don’t indicate what the update trigger mechanism is. You seem concerned about latency (“Your widget may or may not get updated for a while”), so I am going to assume that your concern is tied to user interaction with the app widget, such as tapping a button. Use JobScheduler to schedule a job as … Read more
You should pass IServiceScopeFactory instance (it’s singleton) into your task. Inside task, when data arrives, you should create new CreateScope() and request services from that scope. When data process finishes – dispose this scope (but hold reference to IServiceScopeFactory for next run). See this for example. I run small and fast tasks with this library. … Read more
NOTE: NOW THIS ANSWER IS ONLY VALID FOR ANDROID 7 AND BELOW. SINCE ANDROID 8 GOOGLE HAS CHANGED HOW BACKGROUND TASKS ARE HANDLED Since I posted this question, I have implemented two different approaches to this solution into multiple apps. APPROACH 1 This extract is from an app where I use push notifications, which need … Read more
Its not working because, the minimum interval between two periodic work request is 15 min which is defined by MIN_PERIODIC_INTERVAL_MILLIS. Based on the documentation: Creates a PeriodicWorkRequest to run periodically once every interval period. The PeriodicWorkRequest is guaranteed to run exactly one time during this interval. The intervalMillis must be greater than or equal to … Read more