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Posted to user@couchdb.apache.org by Kismat Sood <Ki...@spacex.com> on 2011/10/01 01:07:11 UTC
Max number of collections
Hello all,
Can anyone tell me if there is a limit to the maximum number of collections a database can hold.
Re: Max number of collections
Posted by Robert Newson <rn...@apache.org>.
The maximum number of databases is 'however many you can fit on disk'
unless you are using a filesystem that performs poorly if you have
lots of files in the same directory (though embedded /'s in your db
names is a poor man's hack around that).
CouchDB keeps an LRU of open dbs and closes one to open a new one, it
defaults to 100. Raise this to prevent thrashing if lots of databases
are active (and increase the file descriptor limit, most linuxes
default to 1024, for example).
B.
On 1 October 2011 02:24, Mark Hahn <ma...@boutiquing.com> wrote:
> As I understand the actual limits are in file/net descriptors in the OS, not
> in Couch. Some are using one DB per registered user.
>
> On Fri, Sep 30, 2011 at 4:57 PM, Kismat Sood <Ki...@spacex.com> wrote:
>
>> Sorry about that. What I should have asked was if there is a maximum on the
>> number of databases that can be created.
>>
>>
>>
>>
>> -----Original Message-----
>> From: Robert Newson [mailto:rnewson@apache.org]
>> Sent: Friday, September 30, 2011 4:26 PM
>> To: user@couchdb.apache.org
>> Subject: Re: Max number of collections
>>
>> what are 'collections'?
>>
>> On 1 October 2011 00:07, Kismat Sood <Ki...@spacex.com> wrote:
>> > Hello all,
>> >
>> > Can anyone tell me if there is a limit to the maximum number of
>> collections a database can hold.
>> >
>> >
>>
>
Re: Max number of collections
Posted by Mark Hahn <ma...@boutiquing.com>.
As I understand the actual limits are in file/net descriptors in the OS, not
in Couch. Some are using one DB per registered user.
On Fri, Sep 30, 2011 at 4:57 PM, Kismat Sood <Ki...@spacex.com> wrote:
> Sorry about that. What I should have asked was if there is a maximum on the
> number of databases that can be created.
>
>
>
>
> -----Original Message-----
> From: Robert Newson [mailto:rnewson@apache.org]
> Sent: Friday, September 30, 2011 4:26 PM
> To: user@couchdb.apache.org
> Subject: Re: Max number of collections
>
> what are 'collections'?
>
> On 1 October 2011 00:07, Kismat Sood <Ki...@spacex.com> wrote:
> > Hello all,
> >
> > Can anyone tell me if there is a limit to the maximum number of
> collections a database can hold.
> >
> >
>
RE: Max number of collections
Posted by Kismat Sood <Ki...@spacex.com>.
Sorry about that. What I should have asked was if there is a maximum on the number of databases that can be created.
-----Original Message-----
From: Robert Newson [mailto:rnewson@apache.org]
Sent: Friday, September 30, 2011 4:26 PM
To: user@couchdb.apache.org
Subject: Re: Max number of collections
what are 'collections'?
On 1 October 2011 00:07, Kismat Sood <Ki...@spacex.com> wrote:
> Hello all,
>
> Can anyone tell me if there is a limit to the maximum number of collections a database can hold.
>
>
Re: Max number of collections
Posted by Robert Newson <rn...@apache.org>.
what are 'collections'?
On 1 October 2011 00:07, Kismat Sood <Ki...@spacex.com> wrote:
> Hello all,
>
> Can anyone tell me if there is a limit to the maximum number of collections a database can hold.
>
>