Output-side response archiving: capture unique responses

• Pros

  • Coverage
    • not subvertable
    • address-space and temporally complete

  • Robust
    • conceptually simple
    • independent of content type

  • Re-creation
    • faithful

  • Cost
    • small volumes

• Cons

  • Cost
    • overhead

  • Robustness
    • if in the critical path, failure is fatal to the web server

  • Coverage - "too complete"
    • non material changes may be archived