WCF REST: Video blog from DotNetIQ

How to Expose WCF service with Multiple endpoints,How to Call WCF REST (JSON) & SOAP services from JQuery

http://www.dotnetiq.com/2012/01/how-to-expose-wcf-service-with-multiple.html

Windows Service observations

Scenario: A windows service actively monitor the replication status in StatusDB. On status change, windows service open the configuration file of QuickSet service/Standard webservice and modify it. Windows service will also restart the IIS in order to reflect the configuration file changes immediately. This helps Quickset service/Standard web services in pointing to StandbyDB/LiveDB automatically.


Note:

• Debugging windows service is a real bottleneck.
• Use Microsoft event log for logging purpose. Event viewer helps to navigate through logs.
• Test the code in console application, then move it to windows service
• It is better to use SQL server authentication when connecting from windows service to SQL Server. 
• If windows service runs under Local System, then it won't be able to create instance of SQL server connection. Service property > Log on > Select a network account.
• Polling has to be done in a different thread.

Reference:  

• http://www.codeproject.com/Articles/16615/How-to-Create-a-Simple-Polling-Service 

• http://stackoverflow.com/questions/7509522/connection-between-windows-service-and-sql-database