Tài liệu Module 9: Implementing Caching pdf

Module 9: Implementing Caching Overview Caching Overview Configuring General Cache Properties Configuring Cache Rules Configuring Content Download Jobs Lesson: Caching Overview What Is Caching? How Caching Works for Requests for New Objects How Caching Works for Requests for Cached Objects How Content Download Jobs Work How Caching Is Implemented in ISA Server 2004 Web Proxy Chaining and Caching What Is Caching? ISA Server caching provides: ISA Server caching provides: Improved performance — information is stored on the computer running ISA Server Reduced bandwidth usage — no additional Internet network traffic Improved performance — information is stored on the computer running ISA Server Reduced bandwidth usage — no additional Internet network traffic ISA Server caching scenarios include: ISA Server caching scenarios include: Forward caching — Internet Web servers Reverse caching — internal Web servers Forward caching — Internet Web servers Reverse caching — internal Web servers ISA Server caching stores a copy of requested Web content in the server memory or on the hard disk ISA Server caching stores a copy of requested Web content in the server memory or on the hard disk Server hard disk Server hard disk How Caching Works for Requests for New Objects www.contoso.com www.contoso.com http://www.contoso.com http://www.contoso.com Server RAM Server RAM 6 6 ISA Server ISA Server 1 1 5 5 3 3 2 2 4 4 How Caching Works for Requests for Cached Objects Server hard disk Server hard disk www.contoso.com www.contoso.com http://www.contoso.com http://www.contoso.com Server RAM Server RAM ISA Server ISA Server 1 1 3 3 2 2 Server hard disk Server hard disk How Content Download Jobs Work www.contoso.com www.contoso.com http://www.contoso.com http://www.contoso.com Server RAM Server RAM ISA Server ISA Server 3 3 5 5 2 2 4 4 1 1 How Caching Is Implemented in ISA Server 2004 ISA Server caching optimizes Web caching performance by: ISA Server caching optimizes Web caching performance by: Using RAM and disk caching Maintaining the RAM cache in physical memory Maintaining a directory of cached items Using a single cache file Providing quick recovery Using efficient cache updates Providing automatic cleanup Using RAM and disk caching Maintaining the RAM cache in physical memory Maintaining a directory of cached items Using a single cache file Providing quick recovery Using efficient cache updates Providing automatic cleanup Web Proxy Chaining and Caching Internet Internet Branch Office Branch Office Head Office Head Office Branch Office Branch Office 1 1 3 3 5 5 6 6 2 2 4 4 Lesson: Configuring General Cache Properties Caching Configuration Components How to Enable Caching and Configure Cache Drives How to Configure Cache Settings [...].. .Caching Configuration Components Component Explanation Define cache drives Enables caching by configuring a cache drive for storing the cached content Configure caching settings Modifies the default TTL and types of cached content Configure caching rules Enables unique caching policies for specific Web content Configure content download... content before clients request the content How to Enable Caching and Configure Cache Drives Caching is disabled by default on ISA Server 2004 When you enable caching, ISA Server creates a file with an initial size equal to the size you chose for the maximum cache size on the hard disk How to Configure Cache Settings Configure negative caching Configure caching of objects with undefined TTL Configure response... Configure negative caching Configure caching of objects with undefined TTL Configure response to request for unavailable Web site Configure memory used for caching Practice: Configuring General Cache Properties Enabling Web Caching on ISA Server Configuring Web caching on ISA Server Den-ISA-01 Internet Den-DC-01 Lesson: Configuring Cache Rules What Are Cache Rules? How to Create a Cache Rule Managing Cache... both types of content Enables caching of both HTTP and FTP content Define the maximum size for cached objects Does not apply any size restrictions to cached objects Define whether to cache SSL content Caches SSL content How to Create a Cache Rule Cache Rule Wizard Page Cache Rule Destinations Content Retrieval Cache Content Cache Advanced Configuration HTTP Caching FTP Caching Configuration Options... this rule applies to Defines how ISA Server responds to client requests if the content is or is not in cache Defines the types of content ISA Server will cache Defines maximum size for caching objects and SSL response caching Enables and configures TTL settings for HTTP content Enables and configures TTL settings for FTP content Managing Cache Rules Managing cache rules includes: Modifying the cache... download jobs that are no longer required Practice: Configuring Content Download Jobs Creating a Content Download Job Gen-Web-01 Den-ISA-01 Internet Den-DC-01 Lab: Configuring Caching Exercise 1: Testing and Monitoring ISA Server Caching Gen-Web-01 Den-ISA-01 Internet Den-Clt-01 Den-DC-01 ... Content Download Job Wizard Page Download Frequency Configuration Options Defines a schedule for when the content download will occur Defines the content that will be downloaded Content Download Content Caching Includes maximum links, objects, and concurrent connections used for downloads Defines what types of content to cache Defines the TTL for cached content Managing Content Download Jobs Managing . Module 9: Implementing Caching Overview Caching Overview Configuring General Cache Properties Configuring. Jobs Work How Caching Is Implemented in ISA Server 2004 Web Proxy Chaining and Caching What Is Caching? ISA Server caching provides: ISA Server caching provides: Improved