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0 pointscperciva14y ago0 comments

I believe that $0.10 per 100k writes is what both Windows Azure Storage and Amazon S3 cost.

Correct. Of course, those are object writes -- Elastic Block Store disk I/O is 10x cheaper.

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1 comments · 1 top-level

Right. The granularity to be expected with an S3 object (~= "a file") is much higher than with a database index of tree nodes of a few kilobytes each. And of course EBS is subject to caching on the host. Rolling the index into a transaction can eliminate almost all the duplicate I/O to the tree nodes.

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