Fadlagring

Fadlagring is a term used in Norwegian information technology to describe the practice of using short‑term data storage to accelerate processing and improve system performance. In this context, fadlagring denotes a storage layer or mechanism that temporarily holds data as it moves between producers and consumers or between slower and faster components of a system.

Common forms of fadlagring include in‑memory caches, disk‑backed caches, and buffers in data pipelines. It can operate at different levels, such as an application’s in‑process cache, operating system buffers, or distributed cache systems and message queues in a networked architecture.

Advantages of fadlagring include faster data access, reduced input/output operations, and better throughput during peak loads. It also helps decouple components and absorb bursts of activity. Disadvantages include the risk of stale data, the need for cache invalidation and coherence strategies, and memory or storage overhead. In some cases, data may be lost if the cache or buffer is not persisted.

Designers select eviction policies (for example, least recently used or FIFO), consistency models, and persistence requirements based on workload. Fadlagring is closely related to caching, buffering, and data staging; each term highlights different guarantees about data freshness and durability.

Limitations include that fadlagring does not replace durable storage and must be carefully managed to avoid data loss or inconsistencies. It is commonly used to speed up web services, databases, and data processing pipelines by keeping frequently accessed or intermediate data close to processing components.