Pillar

State and Consistency

How reads, writes, and replication shape correctness budgets.

Consistency decisions are business decisions wearing technical clothes.

Why this pillar matters

The system only feels simple until teams need to explain what stale, duplicated, or delayed data means to the product.

Start here

24 min read

When scale relief introduces correctness ambiguity.

Replica reads are valuable only when engineers can state exactly what stale means in product terms.

Related pillars

Distributed Systems Foundations

Core primitives behind durability, delivery, and consistency.

How information is copied, propagated, retried, and delayed across systems.