Timer Job Sharepoint

 APIs that return all sites in the site collection, a web part called that shows all sites.you need a SharePoint timer service that will run every night to update the sitemap. The time to run the service be configurable.

 timer jobs, that must be deployed as full-trust farm solutions 
https://msdn.microsoft.com/en-us/library/ff798362.aspx

You can create an Application Page that sits in the ADMIN directory in the SharePoint Root Folder. You need to add a mapped folder in Visual Studio to do this.

You can then create a Custom Action which will add a link to your application page, within any area and section within Central Administration that you wish.

Here is the tutorial I followed on MSDN for this: http://msdn.microsoft.com/en-us/library/ff798467.aspx

Also, the full reference implementation for a timer job with a config page:http://msdn.microsoft.com/en-us/library/ff798362.aspx

Possible to add a “configuration” page to my custom timer job?

http://sharepoint.stackexchange.com/questions/14568/possible-to-add-a-configuration-page-to-my-custom-timer-job

SharePoint: Developing Custom Timer Jobs

https://platinumdogs.me/2010/05/05/sharepoint-developing-custom-timer-jobs/

Creating Custom SharePoint Timer Jobs

http://www.andrewconnell.com/Creating-Custom-SharePoint-Timer-Jobs

Create and Deploy Custom Timer Job Definition in SharePoint Programmatically

https://www.codeproject.com/Tips/634208/Create-and-Deploy-Custom-Timer-Job-Definition-in-S

Step by Step procedures to create a Timer Job in SharePoint 2013

http://www.splessons.com/create-a-timer-job-in-sharepoint-2013/

How to: Create the Web Application-Scoped Timer Job

https://msdn.microsoft.com/en-us/library/ff798313.aspx

Step by Step procedures to create a Timer Job in SharePoint 2013

http://www.sharepointpals.com/post/Step-by-Step-procedures-to-create-a-Timer-Job-in-SharePoint-2013

How to Create Timer Job in SharePoint 2013

http://www.c-sharpcorner.com/UploadFile/b8e86c/how-to-create-timer-job-in-sharepoint-2013/