Memcached item-size ceiling is startup-only and invisible to protocol clients
Memcached does not provide a query language, so bounding a dataset means constraining value size and key length rather than applying LIMIT or OFFSET semantics. The documented default maximum item size is 1 MB; a larger store is rejected with an object-too-large error and is never truncated or spilled to disk. That ceiling is set at startup with the -I option
memcached