Snapshot

Aug 16, 2025 Architecture

Memento Pattern: State Snapshot and Restore

The Memento pattern solves a deceptively simple problem: how do you save and restore an object’s state without tearing apart its encapsulation? You need this capability constantly—undo/redo in…

Jul 29, 2025 Engineering

JavaScript Snapshot Testing: UI Regression Detection

Traditional unit tests require you to anticipate what might break. You write assertions for specific values, check that buttons render with correct text, verify that class names match expectations….