IT Architectures and Middleware: Strategies for Building Large, Integrated Systems / Edition 1by Chris Britton
Pub. Date: 12/06/2000
The challenges of designing, building, and maintaining large-scale, distributed enterprise systems are truly daunting. Written for all IT professionals, IT Architectures and Middleware will help you rise above the obscuring conflicts of new business objectives, new technologies, and vendor wars so that you can think clearly and productively about/b>/i>… See more details below
The challenges of designing, building, and maintaining large-scale, distributed enterprise systems are truly daunting. Written for all IT professionals, IT Architectures and Middleware will help you rise above the obscuring conflicts of new business objectives, new technologies, and vendor wars so that you can think clearly and productively about the challenges you face.
IT Architectures and Middleware focuses on the essential principles and priorities of system design and emphasizes the new requirements brought to the fore by the rise of e-commerce and distributed, integrated systems. It offers a concise overview of middleware technology alternatives and distributed systems. Numerous increasingly complex examples are incorporated throughout, and the book concludes with guidelines on the practice of IT architecture.
Specific topics covered include:
- Middleware technology, covering Distributed Transaction Processing, Message Queuing, CORBA, COM+ and EJB
- Key principles of distributed systems: resiliency, performance and scalability, security, and systems management
- Information access requirements and data consistency
- Creation of a new presentation layer for existing applications
- Application integration
- Component architectures
Once you get your mind around the concepts, principles, and alternatives discussed in IT Architectures and Middleware , you can proceed with greater confidence to design complex enterprise systems.
Table of Contents
List of Figures.
List of Boxes.
1. The Nature of the Problem.
Example: Moving to e-business.
What is IT architecture?
Why is it different from what we did before?
The IT architecture approach.
Why not surround?
How do we get there?
Bringing the techies and modelers together.
2. A Short History of Middleware Technology-- From the Stone Age to Message Queuing.
Remote procedure calls (RPC).
Remote database access.
Distributed transaction processing.
Message queuing vs. distributed transaction processing.
What happened to all this technology?
3. A Short History of Middleware Technology-- Object Middleware.
Object middleware concepts.
Object middleware technologies-- DCOM and CORBA.
Using object interfaces.
4. A Short History of Middleware Technology-- Components and the Web.
Transactional component middleware.
The issues of state.
5. Middleware Classification and Middleware Architectures.
Networking and interoperability.
The programmatic interface.
System administration infrastructure.
A technical classification of middleware?
What is communicating?
How they communicate.
What is the interface?
Classifying middleware from technological principles.
Strawman for user target architecture.
6. What Is Middleware For?
Support for business processes.
The presentation layer.
The transaction server layer.
The data layer.
A generic functional architecture.
Using backup servers.
Clean-up work in progress.
Activating the application.
Reprocessing "lost" messages.
Applying resiliency techniques in practice.
System software failures.
Application software failure.
Developing a resiliency strategy.
8. Performance and Scalability.
The un-slippery slope.
Transactional component containers.
Using remote database access for real-time transactions.
Conclusions on real time.
Is distribution an alternative?
Business intelligence systems.
Ad-hoc database queries.
Backups and recovery.
Design for scalability and performance.
9. Security and Systems Management.
Systems management technology.
Building application security.
Handling internal security violations.
Application support for systems management and security.
10. Implementation Design and Components.
Some general comments on design.
The presentation layer.
Mapping business objects to implementation objects.
Grouping objects into components.
Making reuse work.
Completing the implementation design.
11. Implementing Business Processes.
What is a process?
The alternative view--functional analysis.
Information and processes.
Processes and computer applications.
Real time vs. deferrable.
Generic business processes.
Business process flexibility.
12. Information Access and Information Accuracy.
Basic process information.
Marketing and strategic business analysis.
Summary of requirements for information access.
Shared data or controlled duplication.
Creating consistency in existing databases.
The technical problem.
The data migration problem.
The business process problem.
The information controller.
Creating a presentation layer.
Interface size mismatch.
Turning existing applications into transaction servers.
Building a middle tier.
Business processing change with new interfaces.
Changing the middleware between transaction servers.
Runtime integration products.
Extensible markup language (XML).
Understanding large applications.
15. Building an IT Architecture.
Integrated applications architecture.
Business process design.
The organizational and project management context.
Understanding existing systems.
Business process change design.
Application functional design.
Breaking down the barriers.
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