Here you can find links to various PostgreSQL related presentations

https://wiki.postgresql.org/wiki/PostgreSQL_Related_Slides_and_Presentations

http://tech.zalando.com/getting-a-quick-view-of-your-postgresql-stats/

http://www.niwi.be/2013/02/17/postgresql-database-table-indexes-size/

Handling Growth with Postgres: 5 Tips From Instagram

http://instagram-engineering.tumblr.com/post/40781627982/handling-growth...

What means scalability ?

http://momjian.us/main/blogs/pgblog/2012.html#January_26_2012

After two successful sessions dedicated to the version 9.0 (feb. 2011) and PostGIS (june 2011), we'd like to announce that the 3rd PostgreSQL Session will be held on February 2nd 2012 in Paris, France.

The second beta release of PostgreSQL 9.1 is now available.  This beta fixes several issues reported with 9.1 beta 1.  All users should help the project by downloading and testing PostgreSQL 9.1 beta 2 as soon as they can.

 The PostgreSQL Global Development Group has set the schedule for version 9.2 development. This schedule was determined at the Developers' Meeting in Ottawa, Cananda last week.

Vediamo in dettaglio come ricompilare ed installare su una Debian GNU/Linux Apache 2.2, con supporto Subversion (dav_svn), PHP
con supporto PostgreSQL e Trac con beckend PostgreSQL per la gestione dei progetti, ho testato la configurazione anche su FreeBSD 7, ne evidenziero' le differenze dove necessario.

Prerequisiti:

Installare le librerie necessarie o ricompilarle direttamente dai sorgenti, come preferite