Contents

Title and Copyright Information

List of Figures

List of Tables

Send Us Your Comments

Preface

Audience

Organization

Related Documentation

Conventions

Documentation Accessibility

What's New in Oracle Web Cache?

Part I Getting Started with Oracle Web Cache

1 Introduction to Oracle Web Cache

What is the Big Picture for Caching?

Oracle's Solution to Web Site Performance Issues

How Web Caching Works

Benefits of Web Caching

Features of Oracle Web Cache

Static and Dynamically Generated Content Caching

Cache Invalidation

Performance Assurance

Surge Protection of Application Web Servers

Load Balancing of Application Web Servers

Backend Failover

Application Web Server Binding

Security Features

Restricted Administration

Secure Sockets Layer (SSL) Support

Administration

Compression

2 Oracle Web Cache Concepts

Populating Oracle Web Cache

Request and Response Header Fields

Cache Freshness and Performance Assurance

Caching Dynamically Generated Content

Multiple Versions of the Same Document

Personalized Attributes

Session Information

Session Tracking

Session-Encoded URLs

Content Assembly and Partial Page Caching

Page Assembly Components

ESI Features

ESI for Java (JESI)

3 Deploying Oracle Web Cache

Caching Content for One Application Web Server

Caching Content for HTTPS Requests

Load Balancing Requests Among Application Web Servers

Accelerating Portions of a Web Site

Using Oracle Web Cache Servers in a Failover Pair

Working with Firewalls

Deploying Oracle Web Cache Servers in a Distributed Network

4 Configuration and Administration Tools Overview

Oracle Web Cache Manager

Starting Oracle Web Cache Manager

Navigating Oracle Web Cache

Apply Changes and Cancel Changes Buttons

Status Messages

Navigator Pane

Right Pane

webcachectl Utility

Configuration and Administration Tasks at a Glance

Part II Configuration and Administration of Oracle Web Cache

5 Initial Setup and Configuration

Task 1: Start Oracle Web Cache

Task 2: Modify Security Settings

Task 3: Specify Web Site Settings

Task 4: Set Resource Limits

Cache Memory

Connection Limit

Connections on UNIX

Connections on Windows

Task 5: (Optional) Modify Ports for Administration, Invalidation, and Statistics Monitoring Requests

Changing the Default Administration Listening Endpoint

Changing the Default Invalidation and Statistics Monitoring Listening Endpoints

Task 6: (Optional) Configure the Oracle Wallet

Creating a Wallet

Specifying the Location of Wallets

Enabling Wallets to Open on Windows

Task 7: Specify Caching Rules

Task 8: Restart Oracle Web Cache

6 Creating Rules for Cached Content

Cacheability Rules Overview

Cacheability Rule Creation

Cacheability Rule Syntax

Default Cacheability Rules

Configuring Cacheability Rules

Cacheability Rule Example

Configuring Expiration Rules

Configuring Rules for Multiple-Version Documents Containing Cookies

Configuring Rules for Multiple-Version Documents Containing HTTP Request Headers

Configuring Rules for Pages with Simple Personalization

Example: Personalized Page Configuration

Configuring Rules for Pages with Session Tracking

Configuring Pages for Content Assembly and Partial Page Caching

Enabling Partial Page Caching

Using ESI for Simple Personalization

Examples of ESI Usage

Example Portal Site Implementation

Example of Simple Personalization with Variable Expressions

Configuring Cacheability Attributes in Response Headers

Usage Notes

Example Usage

7 Configuration Considerations for Web Sites with Multiple Application Web Servers

Configuring Load Balancing and Failover

Binding a Session to an Application Web Server

8 Administering Oracle Web Cache

Starting and Stopping Oracle Web Cache

Invalidating Documents in the Cache

Setting the Invalidation Port Number

Sending Invalidation Messages

Manual Invalidation Using Telnet

Manual Invalidation Using Oracle Web Cache Manager

Automatic Invalidation Using Database Triggers

Automatic Invalidation Using Scripts

Automatic Invalidation Using Applications

Invalidation Examples

Example: Invalidating One Document

Example: Invalidating Multiple Objects

Example: Invalidating a Subtree of Documents

Example: Invalidating All Documents for a Web Site

Example: Invalidating Documents with the Prefix

Evaluating Event Logs

Format of the Event Log File

Event Log Examples

Example: Event Log with Startup Entries

Example: Event Log with Unsuccessful Startup Entries

Example: Event Log with an Invalidation Entry

Example: Event Log with an Invalidation Message Error

Example: Event Log with Shutdown Entries

Finding Errors in the Event Log

Configuring Event Logs

Evaluating Access Logs

Format of the Access Log File

Access Log Examples

Example: Access Log with Reload Entries

Example: Access Log with Wrong Path Entry

Example: Access Log with Status Code 404 Entry

Example: Access Log with Status Code 304 Entry

Configuring Access Logs

9 Monitoring Performance

Setting the Statistics Monitoring Port Number

Monitoring Overall Cache Health

Gathering Oracle Web Cache Performance Statistics

Gathering Application Web Server Performance Statistics

10 Troubleshooting Oracle Web Cache Configuration

Startup Failures

Port Conflicts

Cache Memory

Privileged Ports

Greater Than One Thousand Maximum Connections

Wallet Cannot Be Opened

Application Web Server Capacity

Wrong or Older Cached Content

Load on Oracle Web Cache Computer

Configuration Changes Made in Oracle Web Cache Manager

11 A Case Study Deployment

About Digital River

Content of Digital River

Hardware/Network Deployment of Digital River Before Oracle Web Cache

Why Oracle Web Cache?

Hardware/Network Deployment with Oracle Web Cache

Cache Configuration

Performance Results with Oracle Web Cache

Part III Reference

A Oracle Web Cache Directory Structure

B Oracle Web Cache Default Settings

C Invalidation Document Type Definition

Invalidation Request DTD

Invalidation Response DTD

D Edge Side Includes Language

Overview of ESI Tag Library

Syntax Rules

Nesting Elements

Variable Expressions

Usage

Variable Substructure Access

Variable Default Values

Exceptions and Errors

Apology Page

ESI Language Control

Enabling ESI

ESI Tag Descriptions

ESI include Tag

ESI choose | when | otherwise Tags

ESI try | attempt | except Tags

ESI comment Tag

ESI remove Tag

ESI <!--esi-->Tag

ESI vars Tag

E Event Log Messages

Information Events

Warning Events

Error Events

Glossary

Index