Hi
I can tell you for public facing websites (vs enterprise), caching is a
key feature that system architects will insist upon. In order to support
extremely high concurrency & throughput, one simply must be able to
cache portions of HTML fragments.
On my previous php based projects, I use caching to increase throughput
from 30pps to 300pps. That's a factor of 10x. So we're talking about 1
machine replacing 10. From a business perspective, this is absolutely
crucial.
In my opinion, if wicket is going to make it to the mainstream
public-facing web, it absolutely needs a comprehensive caching
framework. If possible, the caching framework should not only eliminates
re-rendering of cached HTML fragments, but also eliminate the need to
instantiate objects until actually needed.
John
Juergen Donnerstag wrote:
On 1/2/06, Dariusz Wojtas <[EMAIL PROTECTED]> wrote:
Hi,
Is it possible to cache dynamically generated content with Wicket?
When using JSP I may use OSCache tags (specify conditions, timeout,
etc) or create a custom tag that uses any cache implementation inside.
Can this be done with Wicket?
Can panel contents be cached? Other elements? How?
For example I generate table where each row contains quite complex data.
I'd like to be able to cache each row if needed. Every row might
contain a unique ID to make caching possible.
Not out of box yet, but I don't think it is difficult to implement
based on the recently committed "transformers". Currently only a XSLT
and a noop transformer is available but the idea would be the same.
You just wouldn't transform the output generated by the component but
store them in a cache and restore it when needed. The cache key could
be anything from the component object, its id or path. All children
would have to me marked rendered though in order to avoid an
exception.
Tranformers are available as Container and Behaviours.
Q. Should the cache span the whole application because the panel you
want to cache is used on multiple pages? Will the panel/list be the
same for all users?
Q: what would be the best cache key?
Juergen
Darek
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