Distributed transactions and the saga pattern

Lasaris presentation 2018-03-01

Transcript

1. DISTRIBUTED DISTRIBUTED DISTRIBUTED DISTRIBUTED DISTRIBUTED DISTRIBUTED TRANSACTIONS AND TRANSACTIONS AND TRANSACTIONS AND TRANSACTIONS AND TRANSACTIONS AND TRANSACTIONS AND THE SAGA PATTERN THE SAGA PATTERN THE SAGA PATTERN THE SAGA PATTERN THE SAGA PATTERN THE SAGA PATTERN
2. MASTER THESIS Use of Transactions within a Reactive Microservices Environment https://issues.jboss.org/browse/JBTM-2920
3. MICROSERVICES ARCHITECTURE
4. ACID TRANSACTION Atomicity Consistency Isolation Durability
5. DISTRIBUTED TRANSACTIONS Two phase commit protocol O(n^2) messages blocking coordinator - single point of failure
6. SAGA PATTERN long lived transactions compensations eventual consistency Hector Garcia-Molina and Kenneth Salem, Princeton Unversity, 1987
7. SAGA EXECUTIONS 2PC - T Saga success - T1, T2, T3, … , Tn compensation - T1, T2, … , Tk, Ck, Ck-1, … , C1
8. EXAMPLE SAGA Success Failure / Compensation
9. TWO PHASE COMMIT PROTOCOL
10. SAGA PATTERN
11. SAGA INVESTIGATION EXAMPLE
12. SAGA IMPLEMENTATION INVESTIGATIONS Axon framework Eventuate.io Narayana LRA Eventuate Tram blog post
13. LRA EXECUTOR MOTIVATION
14. LRA EXECUTOR EXTENSION proof of concept / prototype LRA de nition asynchronicity and scalability recovery capabilities protocol/platform independent https://github.com/xstefank/lra-executor-extension
15. SAGAS long lived transactions distributed environment compensations and failure recovery atomicity vs availability
16. QUESTIONS
17. THANK YOU FOR YOUR ATTENTION mstefank@redhat.com @xstefank http://www.slideshare.net