Batch in the age of Java, SOA and Event Driven Business

My customer presented me with a major enterprise architecture task. “We’re building new systems in a new environment, it’s time to modernize our batch processing. Please recommend a toolset and processing model to move our legacy batches to our new environment.” I didn’t realize it at the time, but this was a trick question.

I spent an extensive amount of time investigating modern batch tools as well as Java development and batch. What I found was a very limited set of such tools, but more important as I consulted various architects I know around the world, the question of “why are you trying to modernize batch?” kept arising.

The question is less straightforward than it sounds. SOA, a component orientation, real time business and event driven business make batch exceptionally challenging, but more importantly much less relevant.

Attached is the result of my research, a whitepaper on a modern approach to batch in light of Service Oriented Architecture, Real Time processing, and a more Event Driven business approach.

Modern Batch Directions - Moving from Legacy Batch to Service Oriented - Component Modeled - Event Driven Batch...

Integration Spaghetti™

I’ve been using the term Integration Spaghetti™ for the past 9 years or so to describe what happens as systems connectivity increases and increases to the point of … unmanageability, indeterminate impact, or just generally a big mess. A standard line of mine is “moving from spaghetti code to spaghetti connections is not an improvement”. (A standard “point to point connection mess” slide, by enterprise architect Jerry Foster from 2001.) In the past few days I’ve been meeting with a series of IT managers at a large customer and have come up with a revised definition for Integration Spaghetti™ : Integration Spaghetti™ is when the connectivity to/from an application is so complex that everyone is afraid of touching it. An application with such spaghetti becomes nearly impossible to replace. Estimates of change impact to the application are frequently wrong by orders of magnitude. Interruption in the integration functioning are always a major disaster – both in terms of th

Solving Integration Chaos - Past Approaches

A U.S. Fortune 50's systems interconnect map for 1 division, "core systems only". Integration patterns began changing 15 years ago. Several early attempts were made to solve the increasing problem of the widening need for integration… Enterprise Java Beans (J2EE / EJB's) attempted to make independent callable codelets. Coupling was too tight, the technology too platform specific. Remote Method Invocation (Java / RMI) attempted to make anything independently callable, but again was too platform specific and a very tightly coupled protocol. Similarly on the Microsoft side, DCOM & COM+ attempted to make anything independently and remotely callable. However, as with RMI the approach was extremely platform and vendor specific, and very tightly coupled. MQ created a reliable independent messaging paradigm, but the cost and complexity of operation made it prohibitive for most projects and all but the largest of Enterprise IT shops which could devote a focused technology

From Spaghetti Code to Spaghetti Connections

Twenty five years ago my boss handed me the primary billing program and described a series of new features needed. The program was about 4 years old and had been worked on by 5 different programmers. It had an original design model, but between all the modifications, bug fixes, patches and quick new features thrown in, the original design pattern was impossible to discern. Any pattern was impossible to discern. It had become, to quote what’s titled the most common architecture pattern of today, ‘a big ball of mud’. After studying the program for several days, I informed my boss the program was untouchable. The effort to make anything more than a minor adjustment carried such a risk, as the impact could only be guessed at, that it was easier and less risky to rewrite it from scratch. If they had considered the future impact, they never would have let a key program degenerate that way. They would have invested the extra effort to maintain it’s design, document it property, and consider

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