n3rv is a C++ library that leverages the power of ZeroMQ to create multiservices architectures. Using ZMQ as core communication mechanism, n3rv basically provides all the components that modern services development requires, meaning:
- A Services Directory & subscribing mechanism.
- An events handler.
- Messages encapsulation methods.
- Logging.
- An HTTP/ZeroMQ gateway.
- Dynamic architecture reconfiguration.
Actually it is quite similar to Facebook’s fbzmq, but easier to use and with more features.
Running nodes create ZMQ socket bindings, then register them to a directory service (service controller). Each update of the directory triggers a broadcast-update on all the nodes, thus making the bindings joinable by everyone.
From the developer’s perspective, n3rv lets you implement custom service classes, inheriting from the n3rv::service superclass. In these custom classes you will describe the complete behaviour of your services:
- Which sockets they must bind.
- Which nodes they must connect to.
- Backend interractions.
- Business rules, ..
After that, you just need to instanciate your defined service classes to let the magics begin !
Running example of a proto-algotrading solution using a n3rv multinodal architecture
n3rv framework is available on github at the following address: https://github.com/n3rvcpp/n3rv
git clone https://github.com/n3rvcpp/n3rv
You will find below the changelog for the different versions of n3rv framework.
- Implement redundency mechanisms for the service controller component.
- Better support of NATed networks for service controller.
- Add FastCGI and easy file serving support for the HTTP Gateway.
- Improve unit tests code coverage.
- WYSIWYG edtior to generate topologies and class templates (separate project).
- Webmin interface for service controller.
- Possible replacement of ZeroMQ by Nanomsg for services I/O.
- Python binding (maybe)
@WintermeW on twitter, or by email at clement.game@gmail.com