| False. And wrong. Read: https://en.m.wikipedia.org/wiki/Consistency_(database_system... We are talking about the word consistency. Which is most often used in the context of databases. Eventual consistency is here: https://en.m.wikipedia.org/wiki/Eventual_consistency It refers to the same concept and technically and colloquially its referring to databases or things similar to databases. If it didn't then every system on the face of the earth is eventually consistent because of browsers and caches and timing. Every browser eventually presents an outdated view if it's not refreshed. If that's the case what is the point of the word? The word is obviously used for categorization. Thus The scope is usually and colloquially a database systems or some combination of services that represent a source of truth. If you read further into the article you cited you will encounter this: "In order to ensure replica convergence, a system must reconcile differences between multiple copies of distributed data. This consists of two part..." Literally the article assumes we are talking about distributed systems where replicas can exist. Is a cache a replica? Is a browser a replica? No. The scope is obviously the source of truth at the resolution where you can have replicas aka: two or more sources of truth. |