Innihaldsspegill

Innihaldsspegill is a term used in Icelandic computing to describe a system or mechanism that reproduces content from a primary source to one or more secondary destinations. Such mirrors are used to improve availability, performance, or access to information.

The term is a compound of innihald meaning "content" and spegill meaning "mirror".

Common forms include web content mirroring, where copies of web pages are hosted on a separate server, content delivery network edge nodes, offline archives for storage or indexing, and data or API mirrors that provide replicated datasets.

Key considerations include update strategies (pull versus push), ensuring content consistency, cache invalidation, access controls, and legal aspects such as licensing and terms of service.

In practice, innhaldspegill can support redundancy, faster access for users in different regions, and offline or archival access. Implementations should respect copyright, robots exclusions, and the policies of the original content providers.