Content Distribution Network
How can geographically distributed service consumers achieve equal access to service capabilities?
Service consumers deployed in different geographical locations can experience differences in latency, network availability, and bandwidth consumption when accessing a centralized service.
Include one or more local redundant implementations of the service nearby each service consumer, thereby allowing a given service consumer to interact with a deployed service within closer geographic proximity.
Content distribution networks usually rely on the domain name system (DNS) to resolve logical service names in resource identifiers to the Internet Protocol (IP) address of the nearest redundant service implementation.
Service capabilities that do not require immediate consistent updates between sites are able to be executed locally. This technique reduces consumer latency and bandwidth, and improves scalability by distributing service processing across sites.
The Brewer CAP theorem limits the ability for geographically separate sites to simultaneously support high availability, database consistency, and tolerance of network failures.
ArchitectureInventory, Composition, Service
ContributorsRaj Balasubramanian, Benjamin Carlyle, Cesare Pautasso
Services are redundant deployed as per consumer’s geographical location to build a Content Distribution Network.