Flyweight Pattern

• a type of structural design pattern that utilizes sharing to support large numbers of fine-grained objects efficiently

Real-World Example

Example Implementation

Applicability

The Flyweight pattern's effectiveness depends heavily on how and where it's used. Apply the Flyweight pattern when all of the following are true:

• An application uses a large number of objects.
• Storage costs are high because of the sheer quantity of objects.
• Most of the object states can be made extrinsic.
• Many groups of objects may be replaced by relatively few shared objects once the extrinsic state is removed.
• The application doesn't depend on object identity. Since flyweight objects may be shared, identity tests will return true for conceptually distinct objects.

Comparisons

Resources

• https://java-design-patterns.com/patterns/flyweight/