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From Apache Wiki <>
Subject [Couchdb Wiki] Update of "One laptop per child" by MartinCzura
Date Sun, 02 Nov 2008 01:58:39 GMT
Dear Wiki user,

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The following page has been changed by MartinCzura:

The comment on the change is:
page creation

New page:
The One Laptop Per Child XO laptop is based on Fedora Linux, it can run CouchDB. The OLPC
user interface and the applications (or activities in OLPC terminology) are written in Python
with the ''python-gtk'' library. It would seem logical to have a CouchDB client written in
Python for this platform.

== Applications ==

  * One database per child with a replica of each on the teachers laptop.
    * Personal Journal
    * Homework assignments with marking replicating back from the teacher to the student
  * One database per class with replicas on every laptop in the class
  * Polls
  * Synchronous/asynchronous chat messaging

== Features ==

  * Opportunistic replication

  If a couchDB server sees another one on the local network via Avahi it should replicate
databases in common.

  * Real time replication when available

  All client applications should always be pointing at the local couchdb server. Real time
replication when available would mean there is never a distinction between using the local
replica and server replicas. If there is connectivity then updates should happen just as fast
as if the clients were talking to the server directly.

  * Database list discovery

  A couchdb server should be able to discover databases in common between it and another couchdb
server. Initially this would be by iterating through the databases and passing each other
a big list. It would be good to have a URL that returns the server name and an MD5 hash of
it's list of databases. This would allow one laptop to meet another and quickly decide whether
or not the database list of the other has changed since they last met.

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