Question

I am basically creating a site for recruiters. One of the functionality in my application requires posting to Facebook periodically. The posting frequency can be from 0(Never) to 4(High)

For Eg. If a recruiter has 4 open jobs and he has posting frequency set to 4, each job should be posted as per it’s turn: 1st job on 1st day, 2nd job on 2nd, 3rd job on 3rd etc, on 5th day again 1st job (round robin fashion).

Had he set the posting frequency to 2, two jobs would be posted daily (thus each job would be posted every 2 days)

My only question is what type of threading should I create for this since this is all dynamic!! Also, any guidelines on what type of information should I store in database?

I need just a general strategy to solve this problem. No code..

Answer 1

• I think you need to seperate it from your website, I mean its better to run the logic for posting jobs in a service hosted on IIS ( I am not sure such a thing exists or not, but I guess there is).
• Also you need to have table for job queue to remember which jobs need to be posted, then your service would pick them up and post them one by one.
• To decide if this is the time for posting a job you can define a timer with a configurable interval to check if there is any job to post or not.
• Make sure that you keep the verbose log details if posting fails. It is important because it is possible that Facebook changes its API or your API key becomes invalid or anything else then you need to know what happened.
• Also I strongly suggest to have a webpage for reporting the status of jobs-to-post queue, if they failed what was the causes of problem.