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Message from discussion getting rid of AS::Cache::Entry in the memcached store
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Xavier Noria  
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 More options Sep 23 2012, 11:20 am
From: Xavier Noria <f...@hashref.com>
Date: Sun, 23 Sep 2012 17:19:39 +0200
Local: Sun, Sep 23 2012 11:19 am
Subject: Re: [Rails-core] Re: getting rid of AS::Cache::Entry in the memcached store
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On Sat, Sep 22, 2012 at 11:42 PM, Xavier Noria <f...@hashref.com> wrote:

On Sat, Sep 22, 2012 at 10:55 PM, Michael Koziarski
<mich...@koziarski.com>wrote:

>  I disagree very strongly with this line of reasoning.  If you're using
>> memcached as a cache store, you should be relying on its semantics,  which
>> is that nil and 'no value' are identical.

> Basing the store on that premise seems sound to me.

I have checked the memcache binary protocol and memcache does tell you if a
key is not known. Wouldn't dalli be the one not following the semantics
here?

If I understand everything correctly we could theoretically use a different
client that provides that interface and allow us to cache nil values. Not
claiming such client exist, only digging into where is the real problem
regarding nil.


 
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