Changes between Version 27 and Version 28 of BluePrint/Synchronisation

Timestamp:

08/17/09 20:46:42 (16 years ago)

Author:

Hasanat Kazmi

Comment:

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BluePrint/Synchronisation

@@ -115 +115 @@
         IRC: #sahana at freenode
         email: <Fran Boon> francisboon at googlemail dot com or hasanatkazmi at gmail dot com
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+= Choosing ZeroConf for Network discovery =
+Automatic synchronization between servers require automatic service discovery. We had two major options to choose from:
+1) ZeroConf
+2) Mesh4x
+
+ZeroConf & Mesh4x solve different problems. They don't overlap in functionality at all:
+ZeroConf provides a solution to automatic discovery.
+Mesh4x provides a solution to the data sync.
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+We were more interested in Zeroconf because:
+1) ZeroConf has Python library but Mesh4x doesn't. I means double work was required if we go with Mesh4x.
+2) We just needed automatic discovery of service because we wanted to use web services, so that foreign developers can also use Restful API
+3) Mesh4x required java daemon, which meant adding jre in the package which would double Sahana package size.
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+= deamonX: Daemon which runs automatic synchronization =
+We created a daemon which calls web services listed above. DaemonX uses ZeroConf libraries available at http://www.amk.ca/python/zeroconf
+Note that ZeroConf is not being maintained after Dec 2006.
+deamonX also requires installing jsonrpc libraries from http://json-rpc.org/wiki/python-json-rpc for processing JSON.
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+Very initial tests of deamonX using Zeroconf are below expectations. Using a GPRS moderm as network source, Zeroconf library has thrown errors. More testing needs to be done before making any final statement.
 = Blueprint for Synchronization =