Low Level Design: SOLID principles

6 topics.

• 01FoundationReadSOLID principlesWhat each principle buys you, and where it gets over-applied.
• 02FoundationReadSingle responsibility principleOne reason to change means one group of people who ask for the change.
• 03FoundationReadOpen/closed principleAdd behavior by adding code, at the places where change is likely.
• 04FoundationReadLiskov substitution principleA subtype must keep every promise its parent made, not just its method names.
• 05FoundationReadInterface segregation principleShape interfaces around what each caller uses, not around what a class can do.
• 06Mid-levelReadDependency inversion principleBusiness rules own the interfaces; databases and APIs plug into them.

More in Low Level Design

• Foundations
• Design patterns
• Worked problems
• Low Level Design overview