How can geographically distributed service consumers achieve equal access to service capabilities?
Problem
Service consumers deployed in different geographical locations can experience differences in latency, network availability, and bandwidth consumption when accessing a centralized service.
Solution
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.
Application
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.
Impacts
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.
Arcitura IT Certified Professionals (AITCP)
Arcitura IT Certified Professionals (AITCP)
Arcitura IT Certified Professionals (AITCP)
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