BASE Semantics
Updated 2026-08-08
INTRODUCTION
English translation pending.
CORE DEFINITION
BASE stands for Basically Available, Soft state, and Eventually consistent, a model proposed as a counterpart to the ACID properties of traditional databases. It accepts temporary inconsistency in exchange for availability and partition tolerance, following the trade-offs described by the CAP theorem. Systems built this way return approximate or pending results quickly and converge to a consistent state later through background reconciliation. Key qualification: eventual consistency is a guarantee about convergence, not a license for permanent inconsistency, and it is unsuitable where business rules demand strict correctness.
SCAFFOLDING EFFECT
Reduce cognitive load
- Choose the trade: decide whether availability or strict consistency matters more for each operation. - Design the reconciliation: specify how and when divergent replicas will converge. - Set the window: define how much temporary inconsistency the business can tolerate.
Anchor fast decisions
When a network partition or heavy load prevents all replicas from coordinating, refusing writes would make the system unavailable. Accepting writes locally keeps the service responsive but allows replicas to diverge temporarily. Background reconciliation then merges the states, so availability is purchased with a bounded period of inconsistency rather than with data loss.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Eventual_consistencyverified
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