Understanding Caching Options
Enabling caching improves performance because after the pagelet is stored in the cache memory, the next time the pagelet is accessed, the information is retrieved and displayed from cache memory instead of requiring a trip to the server. Three caching options exist:
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Private.
Private caching is user-based; pagelet caching is stored per user. For example, if user A accesses the pagelet, only user A will access the pagelet from the cache.
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Public.
Public caching is application-based; pagelet caching is stored per web server instance. For example, if a user accesses the pagelet using web server instance 1, only other users accessing the pagelets using web server instance 1 will access the pagelet from the cache.
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Role.
Role caching is role-based; pagelet caching is stored per user role combination. For example, if user A has membership in roles 1, 2, and 3, only another user with all roles 1, 2, and 3 will access the pagelet from the cache.
Content Reference Attributes
If you enable caching, Pagelet Wizard adds the following attribute information to the pagelet content reference:
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Name: PSCACHECONTROL
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Label: PSCache-Control
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Attribute value: Caching Type field value;max-age=Minutes to Cache field value
For example, Public;max-age=30.
After the pagelet is saved and registered, you can use Pagelet Wizard to alter caching options in the same way that you can alter other registration information. However, altering caching option values requires that you reregister the pagelet.