[Templates] Negative Caching

[Bill Moseley]

I'm using a combination of a database and file system storage for
templates.  I use $STAT_TTL to keep from hitting the mostly static
template very often.

I also use more than one path in INCLUDE_PATH and unfortunately, most
of the template "hits" are in the last path listed in INCLUDE_PATH.

Since only found templates are in the cache, and STAT_TTL only applies
to items in the cache, every request still stats all the template
paths in INCLUDE_PATH dirs

Anyone else dealt with this issue before?

I'm thinking that implementing a negative cache -- one that tracks
templates not found and uses STAT_TTL also to avoid looking too often
for paths that have already been found to be missing.  Does that
seem like a reasonably good solution?



-- 
Bill Moseley
moseley@hank.org