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7.8 Exercises

  • Run df on your existing filesystems and calculate the ratio of inodes to disk space. If any of those partitions are used for Squid's disk cache, do you think you'll run out of space, or inodes first?

  • Try to intentionally make Squid run out of disk space on a cache directory. How does Squid deal with this situation?

  • Write a shell script to search the cache for given URIs and optionally remove them.

  • Examine Squid's store.log and estimate the percentage of requests that are subject to the refresh_pattern rules.

  • Can you think of any negative side effects of the ignore-reload, override-expire, and related options?



    		Preface
    		Chapter 1. Introduction
    		Chapter 2. Getting Squid
    		Chapter 3. Compiling and Installing
    		Chapter 4. Configuration Guide for the Eager
    		Chapter 5. Running Squid
    		Chapter 6. All About Access Controls
    		Chapter 7. Disk Cache Basics
    		7.1 The cache_dir Directive
    		7.2 Disk Space Watermarks
    		7.3 Object Size Limits
    		7.4 Allocating Objects to Cache Directories
    		7.5 Replacement Policies
    		7.6 Removing Cached Objects
    		7.7 refresh_pattern
    		7.8 Exercises
    		Chapter 8. Advanced Disk Cache Topics
    		Chapter 9. Interception Caching
    		Chapter 10. Talking to Other Squids
    		Chapter 11. Redirectors
    		Chapter 12. Authentication Helpers
    		Chapter 13. Log Files
    		Chapter 14. Monitoring Squid
    		Chapter 15. Server Accelerator Mode
    		Chapter 16. Debugging and Troubleshooting
    		Appendix A. Config File Reference
    		Appendix B. The Memory Cache
    		Appendix C. Delay Pools
    		Appendix D. Filesystem Performance Benchmarks
    		Appendix E. Squid on Windows
    		Appendix F. Configuring Squid Clients