Sottoprocesso Arbortext PE Pools
The primary purpose of Arbortext Publishing Engine is the manipulation of documents using XML and related technologies. The Arbortext PE Request Manager acts as the facilitator handling requests and responses, but it has no knowledge of XML. XML processing is performed by Sottoprocessi Arbortext PE.
Each Sottoprocesso Arbortext PE is a running instance of Arbortext’s XML processing engine, with the graphic user interface disabled and additional publishing and performance capabilities enabled. Groups of Sottoprocessi Arbortext PE are organized into Sottoprocesso Arbortext PE pools. When a dynamic Arbortext PE Request Manager component determines that it needs the services of an Sottoprocesso Arbortext PE, it invokes a method of the Arbortext Publishing Engine Request Context to obtain an Sottoprocesso Arbortext PE from a particular pool, uses it to perform one or more operations, and then releases it so that the Arbortext PE Request Manager can use it to fulfill other requests.
An Sottoprocesso Arbortext PE pool is a collection of identical Sottoprocessi Arbortext PE that are associated by the following:
• a set of request selectors that specify criteria for determining whether the Sottoprocessi Arbortext PE in the pool should process a given transaction
• a set of parameters that determine how many
Sottoprocessi Arbortext PE are in the pool, how often
Sottoprocessi Arbortext PE should be terminated and restarted, and other behaviors (explained in
Sottoprocesso Arbortext PE Pool Management).
Having multiple Sottoprocesso Arbortext PE pools offer two major advantages:
• Pools of Sottoprocessi Arbortext PE can be initialized differently.
• Sottoprocessi Arbortext PE pools can be configured to process different types of requests.
When a dynamic component (most frequently, a Request Handler) determines that it needs an Sottoprocesso Arbortext PE, it calls an Arbortext Publishing Engine Request Context routine and passes a reference to the HTTP request being processed. The Arbortext Publishing Engine Request Context offers the request to each Sottoprocesso Arbortext PE pool until one replies that it's configured to handle that type of request. The last Sottoprocesso Arbortext PE pool queried is always the default pool, which can allocate an Sottoprocesso Arbortext PE to fulfill any request not already handled.
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