Variable granularity cache coherence
Lily Mummert, Mahadev Satyanarayanan · ACM SIGOPS Operating Systems Review · 1994
Weak connectivity is characterized by slow or intermittent networks. Distributed file systems using weak connections must function in spite of limited bandwidth and frequent connectivity changes. Callback-based cache coherence schemes were designed to minimize client-server communication, but with an underlying assumption that the network is fast and reliable (i.e., a LAN). This paper large presents granularity callbacks as a way to reduce the client-server communication necessary to maintain file cache coherence. Large granularity callbacks trade off precision of invalidation for speed of validation after connectivity changes.