Speicherkonsis

Speicherkonsis is a term used in German-language discussions of computer storage to denote a model of data storage and retrieval guarantees across distributed systems. It combines Speicher (storage) and Konsistenz (consistency) and is used to discuss how data remains accurate and available when stored on multiple nodes or sites. It describes visibility, ordering, and durability of writes under failures and network partitions.

Key properties include defined write semantics, visibility, and durability. The model considers when updates become visible and how replicas converge after faults. Implementations typically use replication and, for critical paths, consensus protocols such as Paxos or Raft, along with repair mechanisms to ensure consistency.

Variants reflect different trade-offs. Some aim for strong consistency in critical data, while others allow weaker models with bounded staleness or eventual convergence.

Applications include distributed databases, object stores, and cloud storage, where latency, availability, and durability must be balanced.

History and reception: The term appears mainly in German-language literature and niche research; it is less common in English-language sources, where terms like data consistency models and replication are standard.

See also: Data consistency, distributed storage, replication, consensus protocols.