STRING, read-only.

Available inall subroutines.

Hostname of the cache server. Hostnames follow two possible patterns:

  • cache-{siteID}{nodeID}, e.g. cache-jfk1034
  • cache-{POP}-{siteID}{nodeID}, e.g. cache-iad-kiad7000001

A POP is a single pool of cache storage shared by many cache servers. A site is a physical facility housing servers. Learn more about POPs and sites.

Sites and POPs have historically shared a namespace, but newer generation sites have 4-character IDs, while POP IDs are always 3 characters.

HINT: server.pop is a better source for the POP identifier.