The image shows two boxes:

• Initial state (True Caches are all available)
  • Read-only data flows back and forth between application 1 (music) and True Cache 1 and 2.
  • Read-only data flows back and forth between application 2 (videos) and True Cache 3 and 4.
  • Read-only data flows back and forth between application 3 (books) and True Cache 5 and 6.
• True Cache 1 and 2 unavailable
  • No data flows to True Cache 1 and 2 because they are unavailable.
  • Read-only data flows back and forth between application 1 (music) and True Cache 3 and 4.
  • Read-only data flows back and forth between application 2 (videos) and True Cache 3 and 4.
  • Read-only data flows back and forth between application 3 (books) and True Cache 5 and 6.