The _____ Pattern is a design pattern that optimizes memory usage and performance by sharing common, immutable parts of objects across multiple instances.
* Proxy
* Flyweight
* Twin
* Marker
The Flyweight Pattern is a design pattern in software development that focuses on minimizing memory usage and improving performance by sharing common, immutable parts of objects across multiple instances. It's particularly useful when dealing with a large number of similar objects, allowing them to share common data, thus reducing memory overhead.
Key components of the Flyweight Pattern:
1. Flyweight: The Flyweight is an interface or abstract class that defines the shared, reusable state and behavior that can be shared among multiple objects.
2. Concrete Flyweight: Concrete Flyweight objects implement the Flyweight interface and store the intrinsic, shared state. They are typically immutable.
3. Unshared Concrete Flyweight: In some cases, not all parts of an object can be shared. Unshared Concrete Flyweights store the non-shareable, extrinsic state unique to each instance.
Flyweight Factory: The Flyweight Factory manages the creation and sharing of Flyweight objects. It ensures that shared Flyweights are reused, and it creates new ones when needed.
The Flyweight Pattern is valuable in scenarios where you have a large number of objects that share common characteristics but also have individual, unique attributes. It reduces memory consumption by allowing objects to share common parts and promotes efficient resource usage.