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Design Decomposition Blog
Iridium Satellite Collision in Space
You might have seen the recent news reports about the collision between U.S. and Russian communication satellites. The U.S. satellite was one of the Iridium satellites. What wasn’t reported and you probably don’t know is that an object database management system (ODBMS) is an important part of the Iridium system. Even though ODBMSs are a [...]
February 13, 2009
(The Acronym) SOA is (Perhaps) Dead (at Some Companies); Long Live Services
I am now also posting on the Cutter Blog. My initial posting is (The Acronym) SOA is (Perhaps) Dead (at Some Companies); Long Live Services. It is a response to Anne Thomas Manes’ SOA is Dead; Long Live Services on her blog at the Burton Group.
January 9, 2009
Atomicity
The typical definition of an atomic task or process is one that cannot be decomposed further. This is vague and subject to interpretation. The Decomposition Matrix on this site uses a specific definition: A task (for business process diagrams) or a process (for data flow diagrams) is atomic if every input relates to every output [...]
December 3, 2008
Well-Formed Business Process Diagrams
My last posting referenced the criteria for a well-formed business process diagram mentioned in Business Process Driven SOA using BPMN and BPEL by Matjaz B. Juric and Kapil Pant. I am going to expand on their criteria to create a more comprehensive definition of a well-formed business process diagram. To start, here are three criteria [...]
November 18, 2008
Recent Business Process Modeling Books
I recently received two new books on business process modeling. Both books looked interesting because they had great titles. As it turns out, one book is great and the other not so good. The not so good book is Business Process Driven SOA using BPMN and BPEL by Matjaz B. Juric and Kapil Pant. There [...]
October 9, 2008
The Design Decomposition Blog
is written by Doug Barry.

EJB accelerators can speed up the performance of Enterprise Java Beans (EJB). You should consider EJB accelerators if EJB performance is (or might be) a concern.

EJB accelerators can be part of most any J2EE enterprise architecture. To see how EJB accelerators can participate in an "in-line update" architecture, see  J2EE enterprise architecture with in-line updates (new window).

Also, EJB accelerators can be used to "stage" data. This would involve a temporary staging of data in the middle tier to avoid the Java object to table data conversion with an existing relational database. This data conversion can sometimes result in significant performance problems. This particularly true if the data in the EJBs is complex. If you are not familiar with the concept of complex data, see complex data (new window). For an example of staging data, see J2EE enterprise architecture with staged data (new window).

For more information on EJB accelerator data mapping, see EJB accelerator data conversion (new window).

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