NServiceBus

An NServiceBus introduction talk I did with my colleage Mark Taling (http://www.twitter.com/marktaling) at our weekly internal knowledge sharing session: the Info Support Kennis Avond (ISKA).

Transcript

1. NServiceBus #ISKANSERVICEBUS
2. Udi Dahan & ADSD NServiceBus http://tinyurl.com/ISKAADSD
3. Agenda What is NServiceBus (not)? NServiceBus concepts Scaling, monitoring, transactions & retry Tech stuff! Sagas Azure Evaluation NServiceBus
4. NServiceBus
5. What is a servicebus? Architectural pattern Simplifies communications between services/components in a distributed system Loosely coupled messaging – Contract – Temporal decoupling (queues) NServiceBus
6. Where’s the bus? NServiceBus
7. What is NServiceBus? .NET framework to help implement the Service Bus architectural pattern Abstracts away transport, threading, queues, transactional handling Focuses on implementing business logic Developer focused NServiceBus
8. What is NServiceBus Takes care of serialization/deserialization of messages Provides a neat model for dispatching messages w. handlers, polymorphic dispatch, arranging handlers in a pipeline etc. Handles Unit of Work Provides a neat Saga implementation Gives you a host process that can be F5-debugged as well as installed as a Windows service NServiceBus
11. Sample architecture Sales Billing Shipping SubmitOrder OrderBilled OrderShipped NServiceBus
12. NServiceBus
14. Transactions & retry NServiceBus Tx Q $$ Order App Receive DB Call 1 of 3 Rollback Call 2 of 3 Rollback The order is back in the queue
15. Transactions & retry NServiceBus A B C D WS DB [HTTP] Invoke $$ Order Deadlock Rollback Not Rolled back
16. Transactions & retry Messaging Gateway A B C D WS Msg DB $$ Order [HTTP] Invoke NServiceBus
17. NServiceBus
22. Evaluation Lock-in? Pricing Support Stability NServiceBus Free •RPL1.5 •Basic max 1 msg/sec •Express max 1 server/4 cores ca. 30 msg/sec Commercial •Basic 2, 4, 8, 16, 32 msg/sec incremental price $200, $400, $800 ... Flat fee •Standard “Enterprise level” ~1000 msg/sec/process $500 per core
23. Questions? www.nservicebus.com github.com/nservicebus www.udidahan.com @roycornelissen @marktaling NServiceBus