Design Consideration

最新推荐文章于 2024-08-26 18:44:53 发布

最新推荐文章于 2024-08-26 18:44:53 发布 · 100 阅读

文章标签：

#EJB #Web #performance #JDBC

本文探讨了在Web-centric和EJB-centric两种设计模式之间的选择。Web-centric设计适用于小型应用，而EJB-centric设计更适合大型企业级应用，强调代码和性能的可扩展性。此外，还讨论了本地与分布式架构的选择。

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1. Reqirements? Use case diagrams

2. Choosing application tiers: web-centric design, ejb-centric design

In a Web-centric design, Web tier components using container services such
as the JDBC API can communicate directly with the enterprise information
system resources that hold application data.

In an EJB-centric design, enterprise beans running on EJB servers encapsulate
the enterprise information system resources and the core application logic.

There is a trade-off between the two approaches. The Web-centric approach
can enable a quick start for small applications with few transactional needs, while
the EJB-centric approach is better for building a large-scale enterprise application
where code and performance scalability are prime factors. The Web-centric
approach, while more prevalent, has limitations for building large-scale, complex
applications. Applications built with a Web-centric approach can rapidly become
too complex and difficult to maintain.

3. Choosing local or distributed architecture: local ejbs only, or put them at multiple machines?