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Software Fortresses: Modeling Enterprise Architectures by Janet Van Sickler, Roger Sessions

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Summary

Here's a review of the most important points of this chapter:

  • Whereas synchronous drawbridges are based on component technologies, asynchronous drawbridges are based on message queues.

  • The message queues that are used for asynchronous drawbridges are both persistent and transactional.

  • The insertion of an infogram is transactionally coordinated with work being done by the donor fortress by DTC, the distributed transaction coordinator.

  • The receipt of an infogram is also transactionally coordinated by DTC, this time with work being done by the recipient fortress.

  • Sending of the infogram is fairly well coupled with receipt of the infogram.

  • Homogeneous asynchronous drawbridges are based on a configuration in which a component veneer is placed over ...

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