APDN
Table of Contents
About
What's APDN ? APDN mean App Python Distributed Network, APDN is a new way for run Python applications into a middleware. APDN is strong inspired with old grid middlewares architectures, like maui or openpbs. You can see APDN how a global python job queue.
The main characteristics of APDN are :- With APDN you can run hundred Python application into tens of computer nodes.
- You can choose different scheduler algorithms for load balancing.
- APDN has a small and easy framework for write applications. With this framework is possible describe a deterministic input/output variable.
- APDN has a data model based on users, nodes, applications and namespaces for build different situations.
- You will can use a php or python API for use APDN in anyplace, may be a webserver environment.
- .. and a lot of more.
Roadmap and Future Plans
APDN has a two milestones, the first and more important it's called stable release and second it's called future release.
Stable release is expected for end of this year - 2008 - and it is based into two different goals : make a bug free version and implement some new characteristics. You can visit all tickets related with this milestone.
Future release is a group of advanced characteristics and now are in brainstorm moment.
- Lua or scripting support for performance paral.lel instances with input/output connected. For example with script a ,b=c APDN will run a and c instances at the same time, and then will be connect output of c into input of b
- Master/Slave or Multi Maters architecture for improve APDND fail over.
- Semi decentralized architecture for improve bottleneck of APDND, like GFS. User tools first will connect to APDND, and this will redirect talk to APDNN.
- Distributed file system for instances
- ... and more
Documentation
A little architecture description
APDN has a "two side client/server architecture" with three components. One side for communication user with middleware and other side for communication middleware for all nodes. With this architecture user only will see a one entry point but APDN can run any Python application to any node applying some balancing algorithm.
Other papers
End project degree presentation [Cat]
End project degree full paper [Cat]
Download
You can access to subversion repository and checkout all source code
user@localhost:~$ svn co http://apdn.milnou.net/svn apdn