Web Caching
- Starting Page
- Table of Content
- Front Matter
- Preface
- Audience
- What You Will and Won t Find Here
- Caching Resources
- Conventions Used in This Book
- How To Contact Us
- Acknowledgments
- Chapter 1. Introduction
- 1.1 Web Architecture
- 1.2 Web Transport Protocols
- 1.3 Why Cache the Web?
- 1.4 Why Not Cache the Web?
- 1.5 Types of Web Caches
- 1.6 Caching Proxy Features
- 1.7 Meshes, Clusters, and Hierarchies
- 1.8 Products
- Chapter 2. How Web Caching Works
- 2.1 HTTP Requests
- 2.2 Is It Cachable?
- 2.3 Hits, Misses, and Freshness
- 2.4 Hit Ratios
- 2.5 Validation
- 2.6 Forcing a Cache to Refresh
- 2.7 Cache Replacement
- Chapter 3. Politics of Web Caching
- 3.1 Privacy
- 3.2 Request Blocking
- 3.3 Copyright
- 3.4 Offensive Content
- 3.5 Dynamic Web Pages
- 3.6 Content Integrity
- 3.7 Cache Busting and Server Busting
- 3.8 Advertising
- 3.9 Trust
- 3.10 Effects of Proxies
- Chapter 4. Configuring Cache Clients
- 4.1 Proxy Addresses
- 4.2 Manual Proxy Configuration
- 4.3 Proxy Auto-Configuration Script
- 4.4 Web Proxy Auto-Discovery
- 4.5 Other Configuration Options
- 4.6 The Bottom Line
- Chapter 5. Interception Proxying and Caching
- 5.1 Overview
- 5.2 The IP Layer: Routing
- 5.3 The TCP Layer: Ports and Delivery
- 5.4 The Application Layer: HTTP
- 5.5 Debugging Interception
- 5.6 Issues
- 5.7 To Intercept or Not To Intercept
- Chapter 6. Configuring Servers to Work with Caches
- 6.1 Important HTTP Headers
- 6.2 Being Cache-Friendly
- 6.3 Being Cache-Unfriendly
- 6.4 Other Issues for Content Providers
- Chapter 7. Cache Hierarchies
- 7.1 How Hierarchies Work
- 7.2 Why Join a Hierarchy?
- 7.3 Why Not Join a Hierarchy?
- 7.4 Optimizing Hierarchies
- Chapter 8. Intercache Protocols
- 8.1 ICP
- 8.2 CARP
- 8.3 HTCP
- 8.4 Cache Digests
- 8.5 Which Protocol to Use
- Chapter 9. Cache Clusters
- 9.1 The Hot Spare
- 9.2 Throughput and Load Sharing
- 9.3 Bandwidth
- Chapter 10. Design Considerations for Caching Services
- 10.1 Appliance or Software Solution
- 10.2 Disk Space
- 10.3 Memory
- 10.4 Network Interfaces
- 10.5 Operating Systems
- 10.6 High Availability
- 10.7 Intercepting Traffic
- 10.8 Load Sharing
- 10.9 Location
- 10.10 Using a Hierarchy
- Chapter 11. Monitoring the Health of Your Caches
- 11.1 What to Monitor?
- 11.2 Monitoring Tools
- Chapter 12. Benchmarking Proxy Caches
- 12.1 Metrics
- 12.2 Performance Bottlenecks
- 12.3 Benchmarking Tools
- 12.4 Benchmarking Gotchas
- 12.5 How to Benchmark a Proxy Cache
- 12.6 Sample Benchmark Results
- Appendix A. Analysis of Production Cache Trace Data
- A.1 Reply and Object Sizes
- A.2 Content Types
- A.3 HTTP Headers
- A.4 Protocols
- A.5 Port Numbers
- A.6 Popularity
- A.7 Cachability
- A.8 Service Times
- A.9 Hit Ratios
- A.10 Object Life Cycle
- A.11 Request Methods
- A.12 Reply Status Code
- Appendix B. Internet Cache Protocol
- B.1 ICPv2 Message Format
- B.2 Opcodes
- B.3 Option Flags
- B.4 Experimental Features
- Appendix C. Cache Array Routing Protocol
- C.1 Membership Table
- C.2 Routing Function
- C.3 Examples
- Appendix D. Hypertext Caching Protocol
- D.1 Message Format and Magic Constants
- D.2 HTCP Data Types
- D.3 HTCP Opcodes
- Appendix E. Cache Digests
- E.1 The Cache Digest Implementation
- E.2 Message Format
- E.3 An Example
- Appendix F. HTTP Status Codes
- F.1 1xx Intermediate Status
- F.2 2xx Successful Response
- F.3 3xx Redirects
- F.4 4xx Request Errors
- F.5 5xx Server Errors
- Appendix G. U.S.C. 17 Sec. 512. Limitations on Liability Relating to Material Online
- Appendix H. List of Acronyms
- Appendix I. Bibliography
- I.1 Books and Articles
- I.2 Request For Comments
- Colophon
- Index
- Index A
- Index B
- Index C
- Index D
- Index E
- Index F
- Index G
- Index H
- Index I
- Index J
- Index L
- Index M
- Index N
- Index O
- Index P
- Index Q
- Index R
- Index S
- Index T
- Index U
- Index V