Search results
Results From The WOW.Com Content Network
Eventual consistency is a weak guarantee – most stronger models, like linearizability, are trivially eventually consistent. Eventually-consistent services are often classified as providing BASE semantics (basically-available, soft-state, eventual consistency), in contrast to traditional ACID (atomicity, consistency, isolation, durability) .
An eventual consistency [4] is a weak consistency model in a system with the lack of simultaneous updates. It defines that if no update takes a very long time, all replicas eventually become consistent.
The name weak consistency can be used in two senses. In the first sense, strict and more popular, weak consistency is one of the consistency models used in the domain of concurrent programming (e.g. in distributed shared memory, distributed transactions etc.). A protocol is said to support weak consistency if:
Strong versus eventual consistency (storage) [ edit ] In the context of scale-out data storage , scalability is defined as the maximum storage cluster size which guarantees full data consistency, meaning there is only ever one valid version of stored data in the whole cluster, independently from the number of redundant physical data copies.
Eventual consistency; I. Indivisibility (programming) J. Java memory model; L. ... Weak consistency This page was last edited on 14 August 2016, at 19:27 (UTC). ...
Causal consistency was proposed in 1990s [1] as a weaker consistency model for shared memory models. Causal consistency is closely related to the concept of Causal Broadcast in communication protocols. [2] In these models, a distributed execution is represented as a partial order, based on Lamport's happened-before concept of potential ...
Because consistency of ZF is not provable in ZF, the weaker notion relative consistency is interesting in set theory (and in other sufficiently expressive axiomatic systems). If T is a theory and A is an additional axiom , T + A is said to be consistent relative to T (or simply that A is consistent with T ) if it can be proved that if T is ...
Gödel's incompleteness theorems show that Hilbert's program cannot be realized: if a consistent computably enumerable theory is strong enough to formalize its own metamathematics (whether something is a proof or not), i.e. strong enough to model a weak fragment of arithmetic (Robinson arithmetic suffices), then the theory cannot prove its own ...