OpenSRF is a transparent, cross-platform, multi-language application framework that allows for load balancing and high availability. It is based on XMPP and uses distributed services to allow applications to communicate across firewalls with low overhead. OpenSRF provides interfaces using XMPP, XML-RPC, and HTTP to connect applications.

1. OpenSRF 201

2. OpenSRF: Not your father's transparent, cross­platform,
multi­language, load balancing, highly available application
cluster development framework
OR
How I stopped worrying and learned to love Jabber
­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­
Evergreen International Conference
May 21, 2009
Athens, GA
Mike Rylander – miker@esilibrary.com
http://open­ils.org/dokuwiki/doku.php?id=osrf­devel:primer
(hey, it's a start)

3. OpenSRF
IT'S...
 That thing that Evergreen needs
 Based on XMPP
 A load­balancer
 38% cooler than sliced bread

4. But, let's start at the beginning

5. We need something that
 Can cross a firewall
 Has low (or no) amortized connection setup
 Has low per­message overhead
 Uses distributed service
 Is going to be around for a while

6. Decisions, decisions
 spread
 Language­specific (JNI, etc)
 XMPP
 Build our own
 … nothing? (Pile­o­Apache)

7. High up (thank's Bill)

8. Low Down

9. Interfaces
 XMPP (Jabber)
 XML­RPC (Web)
 OpenSRF Gateway (Web – JSON, XML)
 OpenSRF HTTP Translator (AJAX)

10. OpenSRF 201
Evergreen International Conference
May 21, 2009
Athens, GA
Mike Rylander – miker@esilibrary.com
http://open­ils.org/dokuwiki/doku.php?id=osrf­devel:primer
(hey, it's a start)