Message Logging..

• Solution:

  • Fix an order the first time and always follow it
  • Receiver gives each message a ticket number
  • Process messages in order of ticket number

• Protocol

  • Sender logs message and requests receiver for TN
  • Receiver sends back TN
  • Sender stores TN with log and sends message
  • Receiver processes messages in order of TN

• Processor virtualization complicates message logging