scheduled-tasks

问题 I'm trying to create a very simple program which will run Notepad after two minutes (these are all simplified to make a clearer question). I tried to merge some of MSDN's examples and to my surprise everything compiled successfully, when running the program a .job task is created in C:\Windows\Tasks . I don't see the new task in the "Task Scheduler" GUI program and I assume this is because "Task Scheduler" shows only Task Scheduler 2.0 tasks, but I'm not sure. The problem is that the task is

问题 I have a ruby on rails app in which I'm trying to find a way to run some code every few seconds. I've found lots of info and ideas using cron, or cron-like implementations, but these are only accurate down to the minute, and/or require external tools. I want to kick the task off every 15 seconds or so, and I want it to be entirely self contained within the application (if the app stops, the tasks stop, and no external setup). This is being used for background generation of cache data. Every

问题 I'm trying to get Laravel 5.1 Task Scheduling working on IIS. When I run a batch file using Windows task manager it will run the task one time only. How can I get ->everyMinute() to work? Windows batch file: cd c:\inetpub\myapp c:\PROGRA~2\PHP\php.exe artisan schedule:run 1>> NUL 2>&1 The kernel: class Kernel extends ConsoleKernel { protected $commands = [ \App\Console\Commands\MyCommand::class, ]; protected function schedule(Schedule $schedule) { $schedule->command('test')->everyMinute(); }

问题 I have a .net console application written in c# which does exactly what it should when run inside visual studio and when clicking the .exe file in the file system. It runs like a charm. BUT when I create a scheduled windows task either in my Windows 7 dev machine or the Windows 2008 R2 prod machine it fails to carry out the last step in the application. This step is to open a .doc in the background and covert it (simply running a save as) to a .docx. The application is designed to visita

问题 I have a .net console application written in c# which does exactly what it should when run inside visual studio and when clicking the .exe file in the file system. It runs like a charm. BUT when I create a scheduled windows task either in my Windows 7 dev machine or the Windows 2008 R2 prod machine it fails to carry out the last step in the application. This step is to open a .doc in the background and covert it (simply running a save as) to a .docx. The application is designed to visita

问题 Why is it that I can find lots of information on "work stealing" and nothing on "work shrugging" as a dynamic load-balancing strategy? By "work-shrugging" I mean pushing surplus work away from busy processors onto less loaded neighbours, rather than have idle processors pulling work from busy neighbours ("work-stealing"). I think the general scalability should be the same for both strategies. However I believe that it is much more efficient, in terms of latency & power consumption, to wake an

问题 Why is it that I can find lots of information on "work stealing" and nothing on "work shrugging" as a dynamic load-balancing strategy? By "work-shrugging" I mean pushing surplus work away from busy processors onto less loaded neighbours, rather than have idle processors pulling work from busy neighbours ("work-stealing"). I think the general scalability should be the same for both strategies. However I believe that it is much more efficient, in terms of latency & power consumption, to wake an

问题 I am using Celery to perform asynchronous background tasks, with Redis as the backend. I'm interested in the behaviour of a Celery worker in the following situation: I am running a worker as a daemon using celeryd . This worker has been assigned two queues to consume through the -Q option: celeryd -E -Q queue1,queue2 How does the worker decide where to fetch the next task to consume from? Does it randomly consume a task from either queue1 or queue2 ? Will it prioritise fetching from queue1

问题 In a java web application (servlets/spring mvc), using tomcat, is it possible to run a cron job type service? e.g. every 15 minutes, purge the log database. Can you do this in a way that is container independent, or it has to be run using tomcat or some other container? Please specify if the method is guaranteed to run at a specific time or one that runs every 15 minutes, but may be reset etc. if the application recycles (that's how it is in .net if you use timers) 回答1: As documented in

问题 For better or worse, we have migrated our whole LAMP web application from dedicated machines to the cloud (Amazon EC2 machines). It's going great so far but the way we do crons is sub-optimal. I have a Amazon-specific question about how to best manage cron jobs in the cloud using "the Amazon way". The problem : We have multiple webservers, and need to run crons for batch jobs such as creating RSS feeds, triggering emails, many different things actually. BUT the cron jobs need to only run on