Which cache type is described as data that is replicated on each node and invalidated remotely by other nodes?

Which cache type is described as data that is replicated on each node and invalidated remotely by other nodes?

• A. Local Cache
• B. Distributed Cache
• C. Hybrid Cache
• D. None of the above

Answer: (C)

Replication on every node for fast local access, combined with remote invalidation to keep all copies coherent, is the hallmark of a hybrid caching approach. In this setup, each node keeps its own copy of the data so reads are quick, while updates or changes on one node trigger invalidation signals to the others to ensure everyone fetches fresh data when needed. This balances the speed of local caches with the need for cross-node consistency. A purely local cache wouldn’t coordinate invalidations across nodes, and a strictly distributed cache often centers on partitioning rather than guaranteeing that every node holds every item. The described behavior—data replicated on all nodes with remote invalidation to maintain coherence—best matches a hybrid caching strategy.

Replication on every node for fast local access, combined with remote invalidation to keep all copies coherent, is the hallmark of a hybrid caching approach. In this setup, each node keeps its own copy of the data so reads are quick, while updates or changes on one node trigger invalidation signals to the others to ensure everyone fetches fresh data when needed. This balances the speed of local caches with the need for cross-node consistency. A purely local cache wouldn’t coordinate invalidations across nodes, and a strictly distributed cache often centers on partitioning rather than guaranteeing that every node holds every item. The described behavior—data replicated on all nodes with remote invalidation to maintain coherence—best matches a hybrid caching strategy.