1 Around 10% of men is affected by pearly penile papules.  After masturbation or sexual intercourse hard swelling might appear near the foreskin, in the shaft of the head of the penis. This swelling is called lymphocele, and is caused by temporary blockage of the lymphatic channels at the area described.
A key-value store, or key-value database, is a data storage paradigm designed for storing, retrieving, and managing associative arrays, a data structure more commonly known today as a dictionary or hash. Dictionaries contain a collection of objects, or records, which in turn have many different fields within them, each containing data.
There is no way to get the time of keys creation unless you store it yourself in the data associated with it. As for the oldest keys, Redis optimized for fast key-value access, so it stores its data as a hash table. â Leonid Beschastny May 13 '13 at 11:20.