When Messaging or Your System Is Unavailable
No single approach to developing complex software systems is a panacea. There are always issues and drawbacks with any approach, some of which we have already discussed. One problem with a messaging system is that it can become unavailable for a period of time. This may be an infrequent situation, but when it does happen, there are a few things to keep in mind.
When a messaging mechanism is offline for some time, notification publishers will be unable to send messages through it. Since this situation may be detected by the publishing client, it would likely work best to back off attempts to send notifications until the messaging system is available once again. This will be evident when any one send ...
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