I've been playing with caching and looking through the mailing list and
have a bit of confusion about whether or not you can actually cache DAL
Selects with anything other than cache.ram due to issues with what
can/cannot be pickled. When I use
db(...).select(...,cache=(cache.disk, 300), cacheable=True)
Caching works just fine. But if I try it with cache.disk or cache.redis
instead then I get errors which seem to be related to not being able to
unpickle the cached select results.
type 'exceptions.TypeError'> ("cannot create 'pyodbc.Row' instances", <type
'pyodbc.Row'>, ....)
This, admittedly old, post seems to suggest that cache.redis should be
pretty much drop-in for cache.ram but that's not my experience.
https://groups.google.com/forum/?fromgroups#!searchin/web2py/caching$20model$20data/web2py/Tn4TiLPScII/jtMR1KtT4V8J
So does the ability to cache DAL Selects really only exist for cache.ram or
am I missing something?
Brian
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