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Vlad  
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 More options Oct 3 2012, 11:16 am
From: Vlad <vl.ga...@gmail.com>
Date: Wed, 3 Oct 2012 08:16:25 -0700 (PDT)
Local: Wed, Oct 3 2012 11:16 am
Subject: MongoDB on appliance

Hi mongodb-user,

I am currently evaluating feasibility of using MongoDB in our application.
Here's the basic outline of our use case.

1. My main feature of interest at this time is flexible schema/efficient
search(indexing). Our deployment model would be single-node, no
replication, no sharding.
Our transaction volume is expected to be moderate and expected collection
size average about 1 million items/per collection in likely less than 10
collections.
High availability currently is less critical for us, but data durability is
important.

2. Our product offering is security appliance that runs in a headless,
unattended fashion.
Assume there will be no human intervention to perform monitoring or execute
manual recovery steps upon system crash.
Also, assume there's no inbound/outbound web traffic from 3-rd party
vendors so we can't use MMS service for monitoring.
The way I see it we would need to develop kind of stripped-down, very basic
version of MMS to perform basic monitoring/recovery for a single-node
instance.

I am just trying to assess feasibility of such solution.
I understand the new journaling feature will probably go some way in
addressing this as far as data loss is concerned(self-recovery on crash),
but there may be other pitfalls that I am unaware of.

Does anyone use Mongo in a similar setting?
Would you recommend on using it?

Thanks


 
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Jose Silva  
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 More options Nov 9 2012, 4:00 am
From: Jose Silva <pelas...@gmail.com>
Date: Fri, 9 Nov 2012 01:00:09 -0800 (PST)
Local: Fri, Nov 9 2012 4:00 am
Subject: Re: MongoDB on appliance

Hi, I would like to have more comments on that topic. I'm using MongoDB in
our solution, and I'm pretty much happy with the solution (We have a high
write rate, that would be impossible to cope with any RDBM). However we
have problem with the huge files that are allocated in advance.  local.x,
journaling, etc, etc.. they are huge and they keep growing.

As partial solution we configured smallfiles=true and optSize (for replica)
= 10 Mb and we are monitoring them. Any other tip/idea about "how to keep
those extra files managable for devices where disk space does matter" ?

thanks


 
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Sam Millman  
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 More options Nov 9 2012, 7:02 am
From: Sam Millman <sam.mill...@gmail.com>
Date: Fri, 9 Nov 2012 12:02:15 +0000
Local: Fri, Nov 9 2012 7:02 am
Subject: Re: [mongodb-user] Re: MongoDB on appliance

It could be possible your getting very high fragmentation with high write
rates, have you tried commands such as compact:
http://docs.mongodb.org/manual/reference/command/compact/

On 9 November 2012 09:00, Jose Silva <pelas...@gmail.com> wrote:


 
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Sam Millman  
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 More options Nov 9 2012, 7:04 am
From: Sam Millman <sam.mill...@gmail.com>
Date: Fri, 9 Nov 2012 12:03:59 +0000
Local: Fri, Nov 9 2012 7:03 am
Subject: Re: [mongodb-user] Re: MongoDB on appliance

However I just realised that isn't a good answer to what you WERE actually
asking.

On 9 November 2012 12:02, Sam Millman <sam.mill...@gmail.com> wrote:


 
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Jose Silva  
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 More options Nov 9 2012, 8:39 am
From: Jose Silva <pelas...@gmail.com>
Date: Fri, 9 Nov 2012 05:39:01 -0800 (PST)
Local: Fri, Nov 9 2012 8:39 am
Subject: Re: [mongodb-user] Re: MongoDB on appliance

Hi, you are right, but good to know that there is a way to do a
"repairDatabase" per collection ;-)


 
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