Tool provider provides tools used for the development and packaging of application components. Application component provider creates Web components, enterprise beans, applets, or application clients for use in J2EE applications. Application assembler takes a set of components developed by component providers and assembles them in the form of an enterprise archive (EAR) file. Deployer is responsible for deploying an enterprise application into a specific operational environment. System administrator is responsible for the operational environment in which the application runs. Product providers and tool providers have a product focus. Application component providers and application assemblers focus on the application. Deployers and system administrators focus on the runtime. These roles help identify the tasks to be performed and the parties involved. Understanding this separation of roles is important for explaining the approach that should be taken when developing and deploying J2EE applications.
J2EE benefits The J2EE standard empowers customers. Customers can compare J2EE offerings from vendors and know that they are comparing parallel products. Comprehensive, independent compatibility test suites ensure vendor compliance with J2EE standards. Some benefits of deploying to a J2EE-compliant architecture are: A simplified architecture based on standard components, services, and clients, that takes advantage of write-once, run-anywhere Java technology. Services providing integration with existing systems, including Java Database Connectivity (JDBC); Java Message Service (JMS); Java Interface Definition Language (Java IDL); JavaMail™; and Java Transaction API (JTA and JTS) for reliable business transactions. Scalability to meet demand, by distributing containers across multiple systems and using database connection pooling, for example. A better choice of application development tools, and components from vendors providing off-the-shelf solutions. A flexible security model that provides single sign-on support, integration with legacy security systems, and a unified approach to securing application components.
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Performance Tuning for Content Manager