Andreas Hartmann schrieb:
> Hi Lenya devs,
>
> I did some profiling during the last weeks. One of the
most expensive
> operations in Lenya is resolving fallback:// URLs, for
the following
> reasons:
>
>
> 1. The URLs are context-sensitive.
>
> Resolving a fallback URL requires knowledge about the
current
> publication. Currently this is done by the Avalon
Contextualize
> mechanism. Because of this, the FallbackSourceFactory
can't be
> ThreadSafe, and needs to lookup its services upon each
source resolving,
> which is a quite expensive operation.
>
> A possible solution would be to pass the ID of the
current publication
> to the fallback URL, for instance
>
> fallback:// slt/f
oo2bar.xsl
Maybe a better option would be
fallback:slt/f
oo2bar.xsl
This way we could still support the old format and find old
fallback
URLs using a simple search.
If you don't know if the current request is inside a
publication, you
could use
fallback:{page-envelope:publication-id}slt/f
oo2bar.xsl
which could end up as
fallback:slt/f
oo2bar.xsl
and would be directly served from the core.
-- Andreas
--
Andreas Hartmann, CTO
BeCompany GmbH
http://www.becompany.ch
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