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Enterprise Integration Patterns in ESB
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In fact, if we look at many MOM for integrations such as Websphere MQ, Microsoft
Biztalk, TIBCO, Webmethods, and Microsoft MQ, they already provide many of
these patterns at the framework-level. Perhaps, we didn't notice them as patterns
in the first go, but surely as experience builds up we cannot miss a repeated way of
addressing a problem of a particular nature.
Months after my first reading of the EAI patterns book I started evaluating a few of
the SOI-based products, especially in the Java world including Mule and the ESB
framework. The best part of these frameworks is that we have many of the EAI
patterns in the form of code! Believe me, if I were to have used these integration
frameworks a few years back, it would have saved me many man months! Today,
I am wondering how much code our team has written previously for receiving,
selecting, storing, and then sequencing, and aggregating multiple passenger name
lists (PNL) messages for a major airline. Look at the flow given in the following:
Here, I used EAI pattern blocks to connect them together to create my own design
for my PNL part merging problem.
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