Class responsibilities and behavior in LLD - Architecture Diagram

System Overview - Class responsibilities and behavior

This system models how classes in software have clear responsibilities and behaviors. Each class handles specific tasks and interacts with others to complete a process. The design ensures that classes do not do too much and communicate properly.

Architecture Diagram

  +-------------+       +-------------+       +-------------+
  |  Class A    |<----->|  Class B    |<----->|  Class C    |
  | (Behavior)  |       | (Behavior)  |       | (Behavior)  |
  +-------------+       +-------------+       +-------------+
         |                     |                     |
         v                     v                     v
    +------------+        +------------+        +------------+
    | Responsibility A|    | Responsibility B|    | Responsibility C|
    +------------+        +------------+        +------------+

Components

Class A

class

Handles responsibility A and communicates with Class B

Class B

class

Handles responsibility B and acts as a bridge between Class A and Class C

Class C

class

Handles responsibility C and completes the behavior chain

Request Flow - 6 Hops

User → Class A

Class A → Class B

Class B → Class C

Class C → Class B

Class B → Class A

Class A → User

Failure Scenario

Component Fails:Class B

Impact:Tasks delegated to Class B cannot be processed, so Class A cannot complete its behavior fully.

Mitigation:Implement fallback in Class A to handle missing Class B response or retry mechanism.

Architecture Quiz - 3 Questions

Which class acts as a bridge between Class A and Class C?

A Class B

B Class A

C Class C

D User

Design Principle

This design shows the principle of single responsibility where each class handles a specific task. It also demonstrates clear communication paths between classes to complete complex behaviors in a manageable way.