Memory Backend TTL doesn't work

2013-10-14 Thread 성동찬_Chan 
Hi~!

I'm checking riak to use as a cache like memcached.
But I found some strange situation.
I set ttl like this to expire data, but failed.
-
 {riak_kv, [
...
{storage_backend, riak_kv_memory_backend},
{memory_backend, [
  {max_memory, 8192},
  {ttl, 1}
   ]},
...
]},

-

TTL isn't supported on riak_kv_memory_backend?
I changed riak_kv_memory_backend to riak_kv_bitcask_backend, that's fine.

Thanks.
Chan.
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Re: Memory Backend TTL doesn't work

2013-10-14 Thread Alex Moore 
Hi Chan,

Instead of:
{storage_backend, riak_kv_memory_backend}, 
{memory_backend, [ 
{max_memory, 8192}, 
{ttl, 1} 
]}, 


Try:

{multi_backend_default, expiring_memory_backend},
{multi_backend, [
{expiring_memory_backend,  riak_kv_memory_backend, [
{max_memory, 8192}, %% 8GB
{ttl, 1}
]}
]},
Also, for future reference, the max_memory field is in MB per vnode, so your 
current setting is 8GB per vnode.  Unless you have a ridiculous amount of RAM, 
you might want to reduce that setting a bit :)

Thanks, 

Alex

-- 
Alex Moore
Sent with Airmail

On October 14, 2013 at 7:32:03 AM, 성동찬_Chan (c...@kakao.com) wrote:

Hi~! 

I'm checking riak to use as a cache like memcached. 
But I found some strange situation. 
I set ttl like this to expire data, but failed. 
- 
{riak_kv, [ 
... 
{storage_backend, riak_kv_memory_backend}, 
{memory_backend, [ 
{max_memory, 8192}, 
{ttl, 1} 
]}, 
... 
]}, 

- 

TTL isn't supported on riak_kv_memory_backend? 
I changed riak_kv_memory_backend to riak_kv_bitcask_backend, that's fine. 

Thanks. 
Chan. 
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Re: Memory Backend TTL doesn't work

2013-10-14 Thread 성동찬_Chan 
Thank you!! I've got it!! :)
Then, if I started server with ring size 32, I need to change max_memory to 
256(8192/32). Is it right?
Chan.

2013. 10. 14., 오후 9:35, Alex Moore amo...@basho.commailto:amo...@basho.com 
작성:

Hi Chan,

Instead of:
{storage_backend, riak_kv_memory_backend},
{memory_backend, [
{max_memory, 8192},
{ttl, 1}
]},


Try:

{multi_backend_default, expiring_memory_backend},
{multi_backend, [
{expiring_memory_backend,  riak_kv_memory_backend, [
{max_memory, 8192}, %% 8GB
{ttl, 1}
]}
]},


Also, for future reference, the max_memory field is in MB per vnode, so your 
current setting is 8GB per vnode.  Unless you have a ridiculous amount of RAM, 
you might want to reduce that setting a bit :)

Thanks,

Alex

--
Alex Moore
Sent with Airmailhttp://airmailapp.info/tracking


On October 14, 2013 at 7:32:03 AM, 성동찬_Chan 
(c...@kakao.commailto://c...@kakao.com) wrote:

Hi~!

I'm checking riak to use as a cache like memcached.
But I found some strange situation.
I set ttl like this to expire data, but failed.
-
{riak_kv, [
...
{storage_backend, riak_kv_memory_backend},
{memory_backend, [
{max_memory, 8192},
{ttl, 1}
]},
...
]},

-

TTL isn't supported on riak_kv_memory_backend?
I changed riak_kv_memory_backend to riak_kv_bitcask_backend, that's fine.

Thanks.
Chan.
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