настройка oracle фы web cache java

Modules (mods), to implement and extend the basic functionality of Oracle HTTP Server. Many of the standard Apache modules are included with Oracle HTTP Server. Oracle also includes several modules that are specific to Oracle Fusion Middleware to support integration between Oracle HTTP Server and other Oracle Fusion Middleware components.

HTTP listener, to handle incoming requests and route them to the appropriate processing utility.

Oracle HTTP Server is based on Apache 2.2.10 infrastructure, and includes modules developed specifically by Oracle. The features of single sign-on, clustered deployment, and high availability enhance the operation of the Oracle HTTP Server. Oracle HTTP Server has the following components to handle client requests:

9.2.1 Oracle HTTP Server Single-Instance Characteristics

Oracle HTTP Server is the Web server component for Oracle Fusion Middleware. It provides a listener for Oracle WebLogic Server and the framework for hosting static pages, dynamic pages, and applications over the Web.

9.2 Oracle HTTP Server and High Availability Concepts

Because Web Cache is fully compliant with HTTP 1.0 and 1.1 specifications, it can accelerate Web sites that are hosted by any standard web servers, such as Apache and IIS. In Oracle Fusion Middleware, Oracle Web Cache resides in front of one or more instances of Oracle HTTP Server. Responses to browser based HTTP requests are directed to the Oracle HTTP Server instance and transmitted through Oracle Web Cache. The Oracle Web Cache instance can handle any Web content transmitted with standard HTTP protocol.

By storing frequently accessed URLs in memory, Oracle Web Cache eliminates the need to repeatedly process requests for those URLs on the application Web server and database tiers. Unlike legacy proxies that handle only static objects, Oracle Web Cache caches both static and dynamically generated content from one or more application Web servers. Because Oracle Web Cache is able to cache more content than legacy proxies, it provides optimal performance by greatly reducing the load on application Web server and database tiers. As an external cache, Oracle Web Cache is also an order of magnitude faster than object caches that run within the application tier.

Oracle Web Cache is the primary caching mechanism provided with Oracle Fusion Middleware. Caching improves the performance, scalability, and availability of Web sites that run on Oracle Application Server by storing frequently accessed URLs in memory.

Oracle Web Cache is a content-aware server accelerator, or reverse proxy, for the Web tier that improves the performance, scalability, and availability of Web sites that run on Oracle HTTP Server.

The Web tier receives each incoming HTTP request and invokes the requested business logic operation in the application. Based on the results of the operation and state of the model, the next view is selected to display. The selected view is transmitted to the client for presentation.

Generates and delivers the next view

Selects the next view for display

Dispatches those requests to an object (for example, an enterprise Java bean) that encapsulates business logic

The Web tier of Java EE application server is responsible for interacting with the end user such as web browsers primarily in the forms of HTTP requests and responses. It is the outermost tier in the application server, closest to the end user. At the highest level, the Web tier does four basic tasks:

This chapter describes high availability concepts and configuration procedures for Oracle HTTP Server and Oracle Web Cache. This chapter includes the following topics:

The Web tier receives each incoming HTTP request and invokes the requested business logic operation in the application. Based on the results of the operation and state of the model, the next view is selected to display. The selected view is transmitted to the client for presentation.

9 Configuring High Availability for Web Tier Components

Oracle® Fusion Middleware High Availability Guide

Configuring High Availability for Web Tier Components