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From Bren Norris <bren.nor...@measanctum.com>
Subject Re: LDAP scalability
Date Tue, 17 May 2011 23:13:03 GMT
Oh and on a side note, never have I seen facebook directly disclose its
infrastructure. Yes there are rumours it uses a mySQL database however I say
that (a) it is a rumour and (b) it would be highly modified.




On Wed, May 18, 2011 at 9:09 AM, Bren Norris <bren.norris@measanctum.com>wrote:

> Here's one for you guys.
>
> Blizzard, the entertainment guru's had the following appear on their
> website which is ample evidence to suggest they are using LDAP for their
> member infrastructure.
> http://us.battle.net/sc2/en/forum/topic/2325095821
>
> What emmanual has said is correct, sensitive infrastructures aren't openly
> discussed.
>
> That reflects an infrastructure of users which includes all the players of
> "Starcraft II", "World of Warcraft" (16.7 million users) So there you go,
> now in the multiples of millions and outside the hundreds of thousands with
> a subscription value of over $334 million USD.
>
> ;)
>
>
>
> On Wed, May 18, 2011 at 8:57 AM, Emmanuel Lecharny <elecharny@gmail.com>wrote:
>
>> On 5/17/11 11:54 PM, Manoj Khangaonkar wrote:
>>
>>> Hi ,
>>>
>> Hi,
>>
>>> I am evaluating LDAP in general (Apache DS as possible LDAP) for use
>>> as a user repository to be used for authentication /authorization for
>>> a large scale web application.
>>>
>>> The choice is RDBMS vs LDAP vs NoSQL.
>>>
>> It's not really a choice. LDAP is the only pristine solution when it comes
>> to manage authentication and authorization. Using a RDBMS or a NoSQL system
>> implies you build a authn/authz solution on top of it (I'm not talking about
>> LDAP over a RDBMS)
>>
>>  I am well aware that LDAP is used by large enterprises. These
>>> enterprises have typically thousands of users.
>>>
>> Hundred of thousands, and I have seen big telco companies using LDAP for
>> more than 70 000 000 users...
>>
>>
>>  But have not seen it referenced in large scale web application
>>> architectures - such as those at google , facebook, linkedin which
>>> deal
>>> with millions of users. ( They might be using ldap but I have not seen
>>> anything on the web that says they do)
>>>
>>
>> Probably because they don't necessarily want to expose such a sensitive
>> part of their IT, but most certainly because they need a highly replicated
>> system.
>>
>>  Can LDAP in general and Apache DS in particular scale to millions of
>>> users ?
>>>
>> Base line, yes. Dealing with millions of users is not really an issue.
>> What is important here is not the number of users, but much more the
>> operation per second you want to process on the LDAP server. On a laptop,
>> OpenLDAP currently deal with up to 10 000 authentication *per second*, and
>> with ApacheDS, last time I conducted a test (last year), it was around 4 500
>> authentication per second.
>>
>>
>>  Are there any blogs/articles on web that talk of LDAP use in
>>> architectures of  very large scale.
>>>
>> Not that I know of. But the next LDAP conference (in Germany,
>> http://www.daasi.de/ldapcon2011/) might see some talks about such a
>> thing.
>>
>> Hope it helps.
>>
>>> thanks
>>>
>>>
>>
>> --
>> Regards,
>> Cordialement,
>> Emmanuel L├ęcharny
>> www.iktek.com
>>
>>
>

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