IdentityCache

Adds convenience methods like fetch and fetch_by_* directly to models, allowing easy adoption without altering existing Rails associations, as shown in basic usage examples.

Supports secondary indexes and composite keys for efficient lookups beyond primary IDs, enabling cache_index usage on fields like handle or vendor and product_type.

Allows embedding has_many or has_one associations with embed: true, loading related data in a single cache fetch to reduce database queries, as demonstrated with Product and images.

Provides fetch_multi and fetch_multi_by_* methods for efficient retrieval of multiple records, optimizing cache usage for bulk read operations from the README examples.

Enables caching of individual attributes via cache_attribute with custom keys, minimizing cache payload size for specific use cases like fetching target by shop_id and path.