API architectures refer to the fundamental design, including principles, practices, and patterns, used to define and build the structure of an API, which facilitates communication and data exchange between software applications.
Cache, in computer systems, refers to a mechanism that utilizes high-speed memory to temporarily store frequently accessed data or instructions, regardless of its specific form (such as CPU cache, disk cache, or web cache), with the aim of improving overall system performance by reducing data access latency.