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From Tatu Saloranta <tsalora...@gmail.com>
Subject Re: Images store in Cassandra
Date Sun, 13 Dec 2009 03:08:01 GMT
On Sat, Dec 12, 2009 at 3:08 PM, Ryan King <ryan@twitter.com> wrote:
> On Sat, Dec 12, 2009 at 12:05 PM, Ran Tavory <rantav@gmail.com> wrote:
>> As we're designing our systems for a move from mysql to Cassandra we're
>> considering moving our file storage to Cassandra as well. Is this wise?
>> We're currently using mogilefs to store media items (images) of average size
>> of 30Mb (400k images, and growing). Cassandra looks like a performance
>> improvement over mogilefs (saves roundtrip, no sql in the middle) but I was
>> wondering whether the fact that cassandra stores byte arrays should
>> encourage us to store images in it. Is Cassandra a good fit?
>> Has anyone had any similar experience or can send guidelines?
>> To phrase the question in more general terms: What's cassandra's sweet spot
>> in terms of Value size per column or total row size?
>
> Large objects aren't feasible without some work:
> http://issues.apache.org/jira/browse/CASSANDRA-265.
>
> In general, if it's not suitable for a RDBMS, its probably not
> suitable for Cassandra.

For what it's worth, this is where something like Amazon's S3 works pretty well.
Similar key/value storage and access, but more aimed at larger
payloads (and more limited number of entries).

-+ Tatu +-

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