Re: [uWSGI] uWSGI cache hit/miss info?

[Skip Montanaro]

Yeah, been there, done that. Misses are always zero... :-(

I just added a "_stats_" cache to my server and maintain my own hits and
misses.

Skip

On Tue, May 15, 2018, 11:28 AM Roberto De Ioris  wrote:

>
> > Skip> I've got a couple small uWSGI caches in my application, and can see
> > how
> > Skip> many elements they contain, but have no idea what their hit/miss
> > ratios
> > Skip> are. Is there some API for that? I thought perhaps uwsgitop might
> > display
> > Skip> it, but I saw nothing there.
> >
> > Roberto> Hi, you can try this:
> > Roberto> https://github.com/goir/uwsgicachetop
> >
> > Thanks. I gave it a whirl. I installed it using pip in a Python3-based
> > Conda environment. While it installed, when I ran it, I got an error
> about
> > 'reduce' not being defined. Clearly hasn't been ported to Python 3. No
> > problem, run it in a Python 2 env. Once installed and run using Python 2,
> > it displays a number of columns, though the values in the MISS column are
> > always zero, making the various derived values not-so-useful. That it
> > doesn't crash suggests that it's likely reading the data correctly from
> > the
> > socket, but that uWSGI itself isn't keeping track of cache misses, at
> > least
> > not automatically.
> >
> > Is there some action I am supposed to take when the request reached my
> > code
> > (indicating a cache miss)? I saw nothing here:
> >
> > http://uwsgi-docs.readthedocs.io/en/latest/Caching.html
> >
> > which suggests that. This seems like the sort of thing uWSGI itself can
> > keep track of (and more efficiently than me). Am I missing something?
> >
> > Skip Montanaro
> > ___
> >
>
> Hi, the cache stats are exposed by the stats-server so you can directly
> telnet to it and get back a json. You can check there if the data are
> correct.
>
> Let me know what you discover :)
>
>
> --
> Roberto De Ioris
> http://unbit.com
> ___
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Re: [uWSGI] uWSGI cache hit/miss info?

[Roberto De Ioris]

> Skip> I've got a couple small uWSGI caches in my application, and can see
> how
> Skip> many elements they contain, but have no idea what their hit/miss
> ratios
> Skip> are. Is there some API for that? I thought perhaps uwsgitop might
> display
> Skip> it, but I saw nothing there.
>
> Roberto> Hi, you can try this:
> Roberto> https://github.com/goir/uwsgicachetop
>
> Thanks. I gave it a whirl. I installed it using pip in a Python3-based
> Conda environment. While it installed, when I ran it, I got an error about
> 'reduce' not being defined. Clearly hasn't been ported to Python 3. No
> problem, run it in a Python 2 env. Once installed and run using Python 2,
> it displays a number of columns, though the values in the MISS column are
> always zero, making the various derived values not-so-useful. That it
> doesn't crash suggests that it's likely reading the data correctly from
> the
> socket, but that uWSGI itself isn't keeping track of cache misses, at
> least
> not automatically.
>
> Is there some action I am supposed to take when the request reached my
> code
> (indicating a cache miss)? I saw nothing here:
>
> http://uwsgi-docs.readthedocs.io/en/latest/Caching.html
>
> which suggests that. This seems like the sort of thing uWSGI itself can
> keep track of (and more efficiently than me). Am I missing something?
>
> Skip Montanaro
> ___
>

Hi, the cache stats are exposed by the stats-server so you can directly
telnet to it and get back a json. You can check there if the data are
correct.

Let me know what you discover :)


-- 
Roberto De Ioris
http://unbit.com
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Re: [uWSGI] uWSGI cache hit/miss info?

[Roberto De Ioris]

> I've got a couple small uWSGI caches in my application, and can see how
> many elements they contain, but have no idea what their hit/miss ratios
> are. Is there some API for that? I thought perhaps uwsgitop might display
> it, but I saw nothing there.
>
> Thanks,
>
> Skip Montanaro
> ___
> uWSGI mailing list
> uWSGI@lists.unbit.it
> http://lists.unbit.it/cgi-bin/mailman/listinfo/uwsgi
>

Hi, you can try this:

https://github.com/goir/uwsgicachetop

-- 
Roberto De Ioris
http://unbit.com
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[uWSGI] uWSGI cache hit/miss info?

[Skip Montanaro]

I've got a couple small uWSGI caches in my application, and can see how
many elements they contain, but have no idea what their hit/miss ratios
are. Is there some API for that? I thought perhaps uwsgitop might display
it, but I saw nothing there.

Thanks,

Skip Montanaro
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