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From Juho Mäkinen <juho.maki...@gmail.com>
Subject Re: Digg 4 Preview on TWiT
Date Wed, 07 Jul 2010 10:32:14 GMT
Nice to hear, 150 nodes is quite a lot. I have another question on the
topic: I've read that most of the data in facebook is stored as
key=>value -pairs which are cached to memcached layer and then stored
to mysql as simple key-value -pairs for persistence (so no relations
in mysql). Are you still doing this, or have you switched to store the
key-value -pairs in cassandra instead of mysql? What else are you
storing in cassandra than just the inbox search?

 - Juho Mäkinen

On Tue, Jul 6, 2010 at 10:01 PM, Prashant Malik <pmalik@gmail.com> wrote:
> This is a ridiculous statement by some newbie I guess , We today have a 150
> node Cassandra cluster running Inbox search supporting close to 500M users
> and over 150TB of data  growing rapidly everyday.
>
> I am on pager for this monster :) so its pretty funny to hear this
> statement.
>
> - Prashant
>
> On Tue, Jul 6, 2010 at 6:21 AM, Avinash Lakshman
> <avinash.lakshman@gmail.com> wrote:
>>
>> FB Inbox Search still runs on Cassandra and will continue to do so. I
>> should know since I maintain it :).
>>
>> Cheers
>> Avinash
>>
>> On Tue, Jul 6, 2010 at 3:34 AM, David Strauss <david@fourkitchens.com>
>> wrote:
>>>
>>> On 2010-07-05 15:40, Eric Evans wrote:
>>> > On Sun, 2010-07-04 at 13:14 +0100, Bill de hÓra wrote:
>>> >> This person's understanding is that Facebook 'no longer contributes
to
>>> >> nor uses Cassandra.':
>>> >>
>>> >> http://redmonk.com/sogrady/2010/05/17/beyond-cassandra/
>>> >
>>> > Last I heard, Facebook was still using Cassandra for what they had
>>> > always used it for, Inbox Search. Last I heard, there were no plans in
>>> > place to change that.
>>>
>>> I had the opportunity to talk with some Facebook infrastructure
>>> engineers in San Francisco over the past few weeks. They are no longer
>>> using Cassandra, even for inbox search.
>>>
>>> Inbox search was intended to be an initial push for using Cassandra more
>>> broadly, not the primary target of the Cassandra design. Unfortunately,
>>> Facebook's engineers later decided that Cassandra wasn't the right
>>> answer to the right question for Facebook's purposes.
>>>
>>> That decision isn't an indictment of Cassandra's capability; it's
>>> confirmation that Cassandra isn't everything to everyone. But we already
>>> knew that. :-)
>>>
>>> --
>>> David Strauss
>>>   | david@fourkitchens.com
>>>   | +1 512 577 5827 [mobile]
>>> Four Kitchens
>>>   | http://fourkitchens.com
>>>   | +1 512 454 6659 [office]
>>>   | +1 512 870 8453 [direct]
>>>
>>
>
>

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