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automatically expiring keys with LevelDB?
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Nate Lawson  
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 More options Oct 21 2011, 4:22 pm
From: Nate Lawson <n...@root.org>
Date: Fri, 21 Oct 2011 13:22:14 -0700
Local: Fri, Oct 21 2011 4:22 pm
Subject: automatically expiring keys with LevelDB?
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I know Bitcask has the expiry_secs option for expiring keys, but what about LevelDB? We're thinking of using Luwak as a file cache frontend to S3, and it would be nice for older entries to be deleted in LRU order as we store newer files. This could be implemented as a storage quota also (high/low water mark).

Thanks,
Nate

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Justin Sheehy  
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 More options Oct 21 2011, 7:11 pm
From: Justin Sheehy <jus...@basho.com>
Date: Fri, 21 Oct 2011 19:11:36 -0400
Local: Fri, Oct 21 2011 7:11 pm
Subject: Re: automatically expiring keys with LevelDB?
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On Oct 21, 2011, at 4:22 PM, Nate Lawson wrote:

> I know Bitcask has the expiry_secs option for expiring keys, but what about LevelDB? We're thinking of using Luwak as a file cache frontend to S3, and it would be nice for older entries to be deleted in LRU order as we store newer files. This could be implemented as a storage quota also (high/low water mark).

There is no functionality like this in LevelDB at this time.

Also, I do not recommend using bitcask's expiry beneath Luwak unless you are prepared to deal with the fact that parts of a Luwak object might disappear before others.

-Justin

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