[erlang-questions] Mnesia or memcached?
Sun Apr 13 04:03:21 CEST 2008
On Fri, Apr 11, 2008 at 11:38 PM, Yariv Sadan <> wrote:
> I need for an Erlang app a caching solution that does essentially what
> memcached does:
> 1. You tell it the max memory it can use or each node.
> 2. You insert, lookup and remove objects by primary key.
> 3. When you look up an object its time stamp is updated to the current time.
> 4. When you insert an object and the max memory is exceeded, the
> oldest object(s) is (are) removed to make room for the new object.
> 5. The cache is distributed. Each key/value pair exists on only one
> node in a cluster and is accessible by all nodes.
> Should I try to use Mnesia for this (I don't need transactions --
> dirty operations are fine) or should I go with memcached? I know
> Mnesia can take care of 1, 3 and 5 but I'm not sure about 1 and 4.
> I'll appreciate any feedback.
Take a look at this paper
Concurrent Caching by Jay Nelson
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