A structured decision guide for when to apply the Memento design pattern in C#. Covers key signals that indicate the pattern is needed (undo/rollback requirements, complex multi-field state, transaction-style safety, encapsulation concerns), concrete scenarios where it fits (text editors, form wizards, game saves, object-level transactions), and situations where it's overkill (immutable objects, single-value resets, easily reversible operations, large state). Includes a step-by-step decision checklist, a before/after refactoring example with a configuration editor, a comparison table against Command, Serialization, and Event Sourcing approaches, and a list of common misuse red flags.
Table of contents
Signs Your Code Needs the Memento PatternScenarios Where the Memento Pattern FitsScenarios Where the Memento Pattern Is OverkillDecision Framework: Should You Use the Memento Pattern?Before and After: Refactoring to the Memento PatternMemento Pattern vs Alternatives: ComparisonRed Flags: When You're Misusing the Memento PatternFrequently Asked QuestionsWrapping Up the Memento Pattern Decision Guide997 Impressions