The Forefront TMG Web proxy implements a cache of frequently requested
objects to improve network performance. You can configure the cache
to ensure that it contains the data that is most frequently used by
users in your organization or accessed by your Internet
Forefront TMG caching features include:
caching. When Forefront TMG allows internal clients to send
outgoing Web requests to external Web servers, Forefront TMG can be
configured to maintain a centralized cache of frequently requested
Web objects that are retrieved from the external Web servers. These
cached objects can be accessed by any client Web browser. Objects served
from a disk cache require significantly less processing than
objects served from the Internet. This improves client browser
performance, decreases user response time, and reduces bandwidth consumption on
your Internet connection.
caching. Forefront TMG can be deployed in front of Web
servers that it publishes, and can cache the content from the
published Web servers, thereby improving their performance and
accessibility. When incoming Web requests arrive, Forefront TMG can
impersonate a Web server to the outside world, fulfilling client
requests for Web content from its cache. Forefront TMG forwards
requests to the Web server only when the requests cannot be served
from its cache. All Forefront TMG caching features are applicable
for the content on published servers.
- Content download jobs. You can configure Forefront TMG
to download frequently requested content from the Internet to its
cache according to predefined schedules using the Microsoft®
Forefront TMG Job Scheduler service.
caching. When you set up an array of multiple Forefront TMG
computers (not supported in Forefront TMG Medium Business Edition),
you benefit from distributed caching. Forefront TMG uses the Cache
Array Routing Protocol (CARP) to enable multiple Forefront TMG
computers to be arrayed as a single logical cache.
caching. Forefront TMG further extends distributed caching
by allowing you to set up a hierarchy of caches, chaining together
arrays of Forefront TMG computers, so that clients can access
objects from the cache geographically nearest them.
For more information about the Forefront TMG cache, see About the Forefront TMG
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