riak_kv_cache_backend config questions

Kelly McLaughlin kelly at basho.com
Tue Aug 23 10:51:40 EDT 2011


Tony,

Yes, you are correct.

Kelly

On Aug 23, 2011, at 8:38 AM, Tony Bussieres wrote:

> Thanks Kelly!
> 
> So, if I understood well. 
> 
> with a config like this :
> riak_kv_cache_backend_ttl 60
> riak_kv_cache_backend_max_ttl 300
> 
> If I put a key at time 0, and access it will disappear after 60 second.
> If I put a key at time 0, and access it at time 50, it will disappear at time 110
> If I put a key at time 0, and access it every 15 seconds, it will disappear after 300 seconds.
> 
> I'm I right?
> 
> Regards,
> 
> -tony
> 
> 
> 
> On Tue, Aug 23, 2011 at 10:22 AM, Kelly McLaughlin <kelly at basho.com> wrote:
> Tony,
> 
> riak_kv_cache_backend_ttl is the amount of time to extend an object's lease or lifespan when accessed whereas riak_kv_cache_backend_max_ttl is the amount of time after which no further extensions should be granted. 
> 
> Kelly
> 
> 
> On Aug 23, 2011, at 7:49 AM, Tony Bussieres wrote:
> 
>> Hi all,
>> 
>> Could someone explain with an example what's the difference between :
>> 
>> riak_kv_cache_backend_max_ttl 
>> and 
>> riak_kv_cache_backend_ttl
>> 
>> Does the value of riak_kv_backend_max_ttl is also in seconds?
>> 
>> Here's a snippet from the documentation found at http://wiki.basho.com/Configuration-Files.html
>> riak_kv_cache_backend
>> A backend that behaves as an LRU-with-timed-expiry cache
>> riak_kv_cache_backend_memory
>> Maximum amount of memory to allocate, in megabytes (default: “100”)
>> riak_kv_cache_backend_ttl
>> Amount by which to extend an object’s expiry lease on each access, in seconds (default: “600”)
>> riak_kv_cache_backend_max_ttl
>> Maximum allowed lease time (default: “3600”)
>> Thanks!
>> 
>> -tony
>> _______________________________________________
>> riak-users mailing list
>> riak-users at lists.basho.com
>> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
> 
> 

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