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Design Patterns for Agile world

Design patterns with Design principle for Agile world
What are Design patterns?
Design patterns are solutions to real world problems that pop up time and again, so instead of reinventing the wheel, we follow the design patterns that are well-proven, tested by others, follow as safe guidelines.

What are Software Design principles?
Software design principles represent a set of guidelines that helps us to avoid having a bad design. The design principles are associated to Robert Martin who gathered them in "Agile Software Development: Principles, Patterns, and Practices". According to Robert Martin there are 3 important characteristics of a bad design that should be avoided:

Rigidity - It is hard to change because every change affects too many other parts of the system.
Fragility - When you make a change, unexpected parts of the system break.
Immobility - It is hard to reuse in another application because it cannot be disentangled from the current application.

Design principles are impo…