Cache (computing): Difference between revisions

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===Cloud storage gateway===

{{Main|Cloud storage gateway}}

A [[cloud storage gateway]] is a [[hybrid cloud storage]] device that connects a local network to one or more [[cloud storage service]]s, typically [[object storage]] services such as [[Amazon S3]]. It provides a cache for frequently accessed data, providing high speed local access to frequently accessed data in the cloud storage service. Cloud storage gateways also provide additional benefits such as accessing cloud object storage through traditional file serving protocols as well as continued access to cached data during connectivity outages.<ref name="searchstorage1">{{cite web|url=https://www.techtarget.com/searchstorage/definition/cloud-storage-gateway|title=Definition: cloud storage gateway|work=SearchStorage|date=July 2014}}</ref><!--[[User:Kvng/RTH]]-->

===Other caches===

The BIND [[Domain Name SystemBIND|BIND DNS daemon]] daemon caches a mapping of ___domain names to [[IP address]]es, as does a [[DNS resolver]] library.

Write-through operation is common when operating over [[unreliable networks (like an Ethernet LAN)network]]s, because of the enormous complexity of the coherency protocol required between multiple write-back caches when communication is unreliable. For instance, web page caches and [[client-side]] caches for [[Network File System|networkdistributed file system]] cachess (like those in [[Network File System (protocol)|NFS]] or [[Server Message Block|SMB]]) are typically read-only or write-through specifically to keep the network protocol simple and reliable.

[[Web search engine|Search engine]]s also frequently make web pages they have indexed available from their cache.[[Search Forengine example, [[Googlecache|cache]] provides a "Cached" link next to each search result. This can prove useful when web pages from a web server are temporarily or permanently inaccessible.<!--[[User:Kvng/RTH]]-->

[[Database caching]] can substantially improve the throughput of [[database]] applications, for example in the processing of [[Database index|indexes]], [[Data dictionary|data dictionaries]], and frequently used subsets of data.