27.3.12. Proxy Pattern

Try these first

1. 1.

   What is a proxy in the context of design patterns?

   Hint

   Think about what a proxy does in relation to another object.

2. 2.

   Name one type of proxy.

   Hint

   Consider different access scenarios for objects.

3. 3.

   What is the main role of a Proxy in design patterns?

   • To create new objects
   • To control access to another object
   • To store data

   Hint

   Consider what a proxy does in terms of access control.

4. 4.

   True or False: A virtual proxy always creates an object immediately.

   • True
   • False

   Hint

   Think about resource optimization techniques.

5. 5.

   Design a simple application that utilizes the Proxy Pattern for accessing a database. Describe the classes and their responsibilities.

   Hint

   Think about separating the concerns of direct database interactions and access control.

6. 6.

   Discuss a scenario where a protection proxy might introduce latency. How would you mitigate this issue?

   Hint

   Look at the interaction flow and consider optimizations in permission checking.