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   "License"); you may not use this file except in compliance
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   http://www.apache.org/licenses/LICENSE-2.0

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.. _cache_types:

Cache Types
*********************

.. cpp:type:: HttpCacheKey

   The type used to hold a full cache key.

.. cpp:class:: HTTPCacheAlt

   Description of an alternate in the cache. This contains the metadata for the alternate, such as the fragment table and the request and response headers.

.. cpp:class:: CacheHTTPInfo

   A wrapper class for a pointer to a :cpp:class:`HTTPCacheAlt`.

Traffic Server Types
********************

.. cpp:class:: HttpSM

   The HTTP transaction state machine, which also represents the transaction.

.. cpp:class:: HttpTunnel

   Contains the data sources and sinks for the :cpp:class:`HttpSM`.