calibre server in a production environnment

akieni · 03-10-2015, 09:59 AM

Hello,
I'm new to Calibre and I would ike to know if a Calibre server (linux) can be deployed in a College or University campus to service e-books to a small population of 25000 students using their smartphones as e-book reader (calibre companion for example) ?
Thanks

theducks · 03-10-2015, 03:26 PM

Copyright permission is the biggest issue.
The sever has no DRM enforcement provision

Dr. Drib · 03-10-2015, 03:50 PM

Since this a question related to calibre, why not take the time now to review our site and post responsibly?

Now moved out of the GENERAL DISCUSSION forum and into the CALIBRE forum.

Don
(Moderator)

akieni · 03-10-2015, 05:03 PM

Thanks theducks, the idea is to offer free DRM e-books to students but not quiet sure if calibre installed on a good server, can serve a student population of 25000 (Campus)..

Thanks

theducks · 03-10-2015, 05:23 PM

Quote:

Originally Posted by akieni

Thanks theducks, the idea is to offer free DRM e-books to students but not quiet sure if calibre installed on a good server, can serve a student population of 25000 (Campus)..

Thanks

25K are going to access books at the same instant?
Would even 10% ?
1%?
IMHO the load will affect the hardware long before the content serve collapses

Slow would be the first sign

Since Calibre costs zilch
and Linux costs 2x that

All you lose is time

BTW you could just run 2 x copies (2 servers, 2 library copies)

akieni · 03-10-2015, 05:50 PM

Quote:

Originally Posted by theducks

25K are going to access books at the same instant?
Would even 10% ?
1%?
IMHO the load will affect the hardware long before the content serve collapses

Slow would be the first sign

Since Calibre costs zilch
and Linux costs 2x that

All you lose is time

BTW you could just run 2 x copies (2 servers, 2 library copies)

No I don't think there will be 25000 concurrent students accessing calibre server at the same time... It could be 200 to 300 students downloading books directly every hour...
The server itself is a dell server 2950 Generation III with 64GB of memory and 2 x Intel Xeon Quad Core 2.66ghz 1333..

What did you mean by running two 4 servers ?
Did you mean clustering 4 servers in the following scenario:
2 web server and two database servers as libraries ?

loviedovie · 03-10-2015, 06:11 PM

There are php backends for Calibre.

Quote:

Originally Posted by akieni

No I don't think there will be 25000 concurrent students accessing calibre server at the same time... It could be 200 to 300 students downloading books directly every hour...
The server itself is a dell server 2950 Generation III with 64GB of memory and 2 x Intel Xeon Quad Core 2.66ghz 1333..

What did you mean by running two 4 servers ?
Did you mean clustering 4 servers in the following scenario:
2 web server and two database servers as libraries ?

theducks · 03-10-2015, 06:16 PM

My idea was 1 server cant handle the load, just replicate (clone) the rig

eg East campus Svr1. West campus Svr2

If both are loaded with the same books and DB, who cares which serves the book as long as they get it

kovidgoyal · 03-10-2015, 10:03 PM

There should be no problem serving that load with the calibre server. The server (and indeed all of calibre) is designed to operate in an environment with a lot of RAM. As long as you make enough RAM available the server will happily cache lots of things in memory to ensure speedy operation.

But this kind of thing is simple enough to test. There are many load testing tools out there, just use one.

03-10-2015, 09:59 AM	#1
akieni Junior Member Posts: 3 Karma: 10 Join Date: Mar 2015 Device: android	calibre server in a production environnment Hello, I'm new to Calibre and I would ike to know if a Calibre server (linux) can be deployed in a College or University campus to service e-books to a small population of 25000 students using their smartphones as e-book reader (calibre companion for example) ? Thanks

03-10-2015, 05:03 PM	#4
akieni Junior Member Posts: 3 Karma: 10 Join Date: Mar 2015 Device: android	Thanks theducks, the idea is to offer free DRM e-books to students but not quiet sure if calibre installed on a good server, can serve a student population of 25000 (Campus).. Thanks Last edited by akieni; 03-10-2015 at 05:10 PM.

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03-10-2015, 03:26 PM	#2
theducks Well trained by Cats Posts: 31,211 Karma: 60406678 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	Copyright permission is the biggest issue. The sever has no DRM enforcement provision

03-10-2015, 03:50 PM	#3
Dr. Drib Grand Sorcerer Posts: 45,568 Karma: 60184181 Join Date: Jan 2007 Location: Peru Device: KINDLE: Oasis 3, Scribe (1st), Matcha; KOBO: Libra 2, Libra Colour	Since this a question related to calibre, why not take the time now to review our site and post responsibly? Now moved out of the GENERAL DISCUSSION forum and into the CALIBRE forum. Don (Moderator)

03-10-2015, 06:16 PM	#8
theducks Well trained by Cats Posts: 31,211 Karma: 60406678 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	My idea was 1 server cant handle the load, just replicate (clone) the rig eg East campus Svr1. West campus Svr2 If both are loaded with the same books and DB, who cares which serves the book as long as they get it

03-10-2015, 10:03 PM	#9
kovidgoyal creator of calibre Posts: 45,579 Karma: 28548962 Join Date: Oct 2006 Location: Mumbai, India Device: Various	There should be no problem serving that load with the calibre server. The server (and indeed all of calibre) is designed to operate in an environment with a lot of RAM. As long as you make enough RAM available the server will happily cache lots of things in memory to ensure speedy operation. But this kind of thing is simple enough to test. There are many load testing tools out there, just use one.

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