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From Andrew Purtell <apurt...@apache.org>
Subject Re: Storing images in Hbase
Date Mon, 28 Jan 2013 21:13:09 GMT
You bring up a very common consideration I think.

For static content, such as images, then a cache can help offload read load
from the datastore. This fits into this conversation.

For dynamic content, then an external caching may not be helpful as you
say, although blockcache within HBase will help if you are assembling
content dynamically from repeated queries some of which are bringing in the
same data over and over.

On Mon, Jan 28, 2013 at 12:23 PM, yiyu jia <jia.yiyu@gmail.com> wrote:

> Let's say I have an web application which use HBase as data source at the
> backend. I have cache configured in my reverse proxy which is at the front
> of my Web server. And the cache is configured based on URL pattern or
> parameters. In this case, the cached data will be delivered to the client
> if the input parameter/url is same. So, the same data cached behind Web
> server wil not be hitted. if this is the case, I will say the cache between
> HBase and HDFS will not be helpful.

Best regards,

   - Andy

Problems worthy of attack prove their worth by hitting back. - Piet Hein
(via Tom White)

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