flyweight-pattern

To reduce memory usage in JavaScript, separate intrinsic shared attributes from extrinsic unique fields, cache reusable objects in a map keyed by a stable identifier, and return existing instances when the identifier repeats.

Handling high-cardinality catalog data requires splitting intrinsic state like titles or ISBNs from extrinsic fields like availability, caching shared object instances by their intrinsic lookup key to prevent memory duplication across repeated entities.

Split intrinsic and extrinsic state for object reuse when your application generates large numbers of batch items or inventory records that share the same core attributes but differ in per-instance data like sales status.

Instance caching for inventory systems works by storing a shared object in a map using a stable identifier such as an ISBN, returning the existing cached instance whenever a matching intrinsic state is requested again.

The flyweight pattern works for batch item generation in JavaScript by caching reusable objects keyed by stable identifiers, preventing excessive memory consumption when creating many similar entities that share intrinsic attributes.

Your application runs out of memory loading large catalogs because it duplicates intrinsic state across every item. Refactoring object creation to reuse cached shared instances keyed by identifiers like ISBN eliminates this excessive memory consumption.