43. Proxy Types

• The Proxy pattern introduces a level of indirection to access other objects.

• The indirection has many uses, depending on the kind of proxy:

  1. Remote proxy can hide the fact that an object resides in a different address space.

  2. Virtual proxy can perform optimizations such as creating an object on demand.

  3. Both protection proxies and smart references allow additional housekeeping tasks when an object is accessed.