Distributed RESTful services

Wrapper for RESTful services

• Providing authentication and asynchronous communication
• Stateless RESTful interface with callbacks
• Communicating with command line tools
• Based on thin and nginx as a load balancer?

Communication with Hets

• Also stateless via wrapper
• Hets can store a session on disk and resume it later (however, often it is even faster to re-read the whole ontology. See http://trac.informatik.uni-bremen.de:8080/hets/ticket/1152 . Moreover, often storing on disk takes quite long.)
• Wrapper or load balancer can select suitable server that has saved session, based on ontology IRI
• Wrapper communications with Hets?
  • Via REST
    • Has slight overhead in communications and would be more implementation effort on hets side
  • Command line shell (IPC)
    • Multiplexed output via file descriptors or files
  • Other RPC interface
    • msgpack
    • protobuf
    • ... for example