In the Developer Guide, you will find information on Neutron's lower level programming APIs. There are sections that cover the core pieces of Neutron, including its database, message queue, and scheduler components. There are also subsections that describe specific plugins inside Neutron.
Programming HowTos and Tutorials
api_layer api_extensions plugin-api db_layer rpc_api layer3 l2_agents advanced_services
Add in all the big modules as automodule indexes.
Indices and tables