I made a service in Node.js which runs fine. But I've decided to make a change. Untill the time isn't between lets say 7pm and 5am, don't run the service - be in standby mode - or sleep.
Which command or method to use? Is there something specific for such cases?
NodeCron does the Job for you.
You can also try node-schedule to cron the jobs.
Thanks.
Related
I need to notify users of incoming end time of created data. Let's say need to notify the users after 3hrs of created data. But I dont want to run cron job every hour because this will slow down the system.
You can queue a command then add a delay to it.
use Illuminate\Support\Facades\Artisan;
Artisan::queue('your:command')->delay(60 * 60 * 3);
I haven't tried to delay a queue for hours. That's why I think a scheduled task is more reliable as you know the time when it runs.
Laravel has a Task Scheduler pretty efficient to work with cron.
You only have to configure it once to run once a minute and Laravel does the rest for checking when it needs to run.
The syntax is pretty simple and you find all available configurations on your codebase.
https://laravel.com/docs/9.x/scheduling
This hardly slows down the system since Laravel only runs the necessary.
I want to run a cypress test at a particular time of a day or I want to schedule the test to run every 30 minutes for example. How can we achieve this?
I think the only way to do this would be to deploy your tests to a server and run them on some sort of cron job. You could do this locally, as well, but it makes the most sense to run them inside of a container or virtual server.
Hope this helps, let us know how it goes!
Is it possible to create a script that is always running on my VPS server? And what need i to do to run it the hole time? (I haven't yet a VPS server, but if this is possible i wants to buy one!
Yes you can, there are many methods to get your expected result.
Supervisord
Supervisord is a process control system that keeps any process running. It automatically start or restart your process whenever necessary.
When to use it: Use it when you need a process that run continuously, eg.:
A queue worker that reads a database continuously waiting for a job to run.
A node application that acts like a daemon
Cron
Cron allow you running processes regularly, in time intervals. You can for example run a process every 1 minute, or every 30 minutes, or any time interval you need.
When to use it: Use it when your process is not long running, it do a task and end, and you do not need it beign restarted automatically like on Supervisord, eg.:
A task that collects logs everyday and send it on a gzip by email
A backup routine.
Whatever you choose, there are many tutorials on the internet on how configuring both, so I'll not go into this details.
I am wondering if there is a way to monitor these automatically. Right now, in our production/QA/Dev environments - we have bunch of services running that are critical to the application. We also have automatic ETLs running on windows task scheduler at a set time of the day. Currently, I have to log into each server and see if all the services are running fine or not, or check event logs for any errors, or check task scheduler to see if ETLs ran well etc etc... I have to do all the manually... I am wondering if there is a tool out there that will do the monitoring for me and send emails only in case something needs attention (like ETLs fail to run, or service get stopped for whatever reason or errors in event log etc). Thanks for the help.
Paessler PRTG Network Monitor can do all that. we have very good experience with it.
http://www.paessler.com/prtg/features
Nagios is the best tool for monitoring. It checks for the server status as well the defined services in it and if any service goes down or system goes down, sends the mail to specified mail id.
Refer the : http://nagios.org/
Thanks for the above information. I looked at the above options but they have a price.. what I did is an inexpensive way to address my concerns..
For my windows task scheduler jobs that run every night - I installed this tool/service from codeplex that is working great.
http://motash.codeplex.com/documentation#CommentsAnchor
For Windows services - I am just setting the "Recovery" Tab in each service "property" with actions to do when it fails. (like restart, reboot, or run a program which could be an email that will notify)
I built a simple tool (https://cronitor.io) for monitoring periodic/scheduled tasks. The name is a play on "cron" from the unix world, but it is system/task agnostic. All you have to do is make an http request to a unique tracking URL whenever your job runs. If your job doesn't check-in according to the rules you define then it will send you an email/sms message.
It also allows you to track the duration of your jobs by making calls at the beginning and end of your task. This can be really useful for long running jobs since you can be alerted if they start taking too long to run. For example, I once had a backup task that was scheduled every hour. About six months after I set it up it started taking longer than an hour to run!
There is https://eyewitness.io - which is for monitoring server cron tasks, queues and websites. It makes sure each of your cron jobs run when they are supposed to, and alerts you if they failed to be run.
A consultant setup a windows service to run a application. The application is supposed to run every 15 minutes. The application is not running at all and the service appears to be running fine.
I am not familiar with how an application will run at a standard interval when running as a service.
The service uses the SRVANY.EXE tool.
Any 'consultant' that sets up a service to run using SRVANY.EXE should be fired. SRVANY is an unfortunate hack that should have been retired a decade ago; it should never be used in a production environment.
If the only purpose for the service is to run the app on a schedule then it shouldn't exist at all. Run the app as a Scheduled Task. If it has other functionality then rewrite it as a real service. If it is reasonably well written it should be a fairly easy conversion.
There are many potential issues with your application.
SRVANY.EXE turns any application into a Windows Service. If that application ever asks for user input, it will hang. You will want to confirm that the application running as a service does nothing more than start the other application.
You should also be able to run the "starter" application manually, outside the Windows Service. If it still doesn't work as it should you know it's not related to being run as a service.
To add to the other answers: see KB137890 on what SRVANY.EXE actually does and how to find out what application it is running.
It seems to me that you would be better off (if you can) setting up a scheduled task that runs every the application every 15 minutes if you can.
I'm not sure if this is correct, but I believe one way of a serivce running an application is merely to have a thread within OnStart and set it to run the application on an invertal of 15 minutes.