Ciao Paulius,
you can find my answers inline below...
Regards,
Simone Giannecchini
Ing. Simone Giannecchini
@simogeo
Founder/Director
GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 333 8128928
http://www.geo-solutions.it
http://twitter.com/geosolutions_it
-------------------------------------------------------
On Mon, Sep 2, 2013 at 1:10 PM, Paulius Litvinas <paulius@anonymised.com> wrote:
Hello List,
Maybe someone knows and could provide such information:
1. How many concurrent users can be served by GeoServer? Where is a
requirement to handle concurrent 500 users, so I am thinking what
approximately configuration and server technical specifications should be.
It would be helpful as you maybe could share your results with different
configuration: etc. with such configuration where is no problem to serve
such count of users/requests. I know every case is unique, but I think with
such info it would be possible approximately evaluate the need.
Basic tasks would be to review layers through WMS, WMTS and update data
through WFS with GIS client software.
Maybe there is already something about GeoServer capabilities, but I was not
able to find?
It is hard to answer this question in such generic terms as the
throughput pretty much depends on the HW as well as on the type of
data (as well as on the level of processing).
I mean, if you want to have 500 users connecting to an Oracle
corporate instance where you have a slot of 15 connections available,
you are already out of luck!
You can find some general numbers here:
http://2010.foss4g.org/presentations/benchmarking2010.pdf
http://geo-solutions.blogspot.it/2013/03/libjpeg-turbo.html
http://geo-solutions.blogspot.it/2011/01/developers-corner-improving.html
I have also some other spreadsheets I can share privately since they
contain sensitive information.
2. There is a competition to create internal GIS data management system with
some custom functionality. One of qualification requirements is to provide
GIS software vendor issued technical qualification certificate or other
equivalent document.you can
While it was in technical specification phase we were thinking about
GeoServer implementation for it, but now in competition such requirement
appeared and I can't imagine if such qualification certificate is even
possible for OpenSource solutions?
Well everything is possible 
I believe this would be relatively hard as GeoServer is a _real_
community driven open source project meaning that there is no single
company behind it
acting as a benevolent dictator (can a dictator be benevolent ? )
What you might find around is the posibility to be trained by
Companies offering professional services for GeoServer and get a
certificate for that.
Here http://geoserver.org/display/GEOS/Commercial+Support find a list
of companies that (might) do that.
It is the first time we are planning to use OpenSource (GeoServer) solution
as GIS server, so my question would be is it possible to meet such
requirement using GeoServer?
Maybe you could share best practices how you compete (I believe you do) with
OpenSource solutions for government public procurements to meet needed
qualification?
Thank you for you help.
Sincerely,
Paul
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