Send/Receive message To/From two running application

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There are different ways to share information between 2 processes.

First at all you have to think if both processes are going to be always in the same machine or not when your application scales up.

Different Machines

  • Use TCP/UDP socket connection (Can be the quickest solution)
  • Use MSMQ
  • Use WebServices, WCF or Restful Web Service.
  • Reading from a common entry in a db. (Not recommended)
  • Named Pipes (Check this) (Named pipes can be in same machine or fly over a network)

Always in same machine.

Preferred choice: MSMQ

If I were you I would preserve the ability of having processes in different machines so I would use, as Maarten suggested, two windows services that uses MSMQ to communicate. Why?

  1. MSMQ allows you not to lose messages (in case RECEIVER is down)
  2. MSMQ allows you to have processes in same machine or in different machines
  3. Windows service give you the ability to start/stop the processes easily
  4. Windows service can me monitored my SNMP and in general they integrate easily with windows admin tools.

Second preferred choice: Restful Web Service

If you don’t want to use MSMQ I would use two Restful Web Service hosted in IIS to communicate both processes. It can be useful if you have an scenario where RECEIVER is not interested in messages from SENDER if they arrive late.

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