Master thesis

Architecture

TODO:

• pgadmin init config
• implement db per app
• paying service
• ticketing service
• scripts for initial data
• read model service
  • update read service during saga
  • push updates to FE
• FE
  • room component
  • post request
  • seat picker
  • update room after read service update
  • fix bug where too many sockets were being created
• integration tests
  • paying
  • ticketing
• orchestrating service/choreographing
  • setup rabbitmq + celery
  • setup auto-reload for celery
  • write controller (saga workflow) as celery task/multiple tasks
• experiment
  • save time of reservation for further analysis
  • save duration of the reservation for further analysis
  • script which will reserve seats concurrently
  • alternative - wait for response and only then send next request
  • stats from experiments
    • avg time to reserve seats
    • number of requests which failed
    • number of requests which succeeded
    • time of experiment
  • find out why inconsistent reservations appear
  • check that payments and ticket renders are all correct
  • check for correctness under heavy load
  • write trigger/check for uniqueness of reserved seats
  • different container for read and write path (CQRS) because due to writes reads become unresponsive due to queueing up requests on django
  • read model service shows all screenings instead of just one with uuid given in url
  • benchmark rewrite to CLI
  • fix amount of queries generated by orm
• distributed transactions approach
• use uwsgi instead of django dev server
• check periodically for updates in read model service
• add spinner to FE
• remove screening endpoint (mark as full)
• update benchmarking script to creating/deleting screenings
• gather data for thesis
• visualize data
  • high load
    • time to reserve all seats (or almost all)
      • avg
      • std dev
      • distribution
    • time to complete a reservation
      • avg
      • std dev
      • distribution
    • success/failure rate (status code >= 400)
      • avg
      • std dev
      • distribution
  • small load
    • time to reserve all seats (or almost all)
      • avg
      • std dev
      • distribution
    • time to complete a reservation
      • avg
      • std dev
      • distribution
    • success/failure rate (status code >= 400)
      • avg
      • std dev
      • distribution
• write thesis
  • abstract,
  • introduction,
  • related work,
  • system design,
  • implementation,
  • evaluation,
  • conclusion,
  • bibliography
  • acknowledgements
  • appendix