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  5. Distributed transactions & microservices: how to?

Distributed transactions & microservices: how to?

Session details
Speaker(s): 
Jean-François James (Worldline)
Experience level: 
Intermediate
Session Track: 
Programming Languages & Runtimes
Session Type: 
Standard

Evolving from a monolithic architecture to microservices is not a long, quiet river. One of the main challenge, is transactional integrity. How to ensure global data consistency with business transactions spanning and changing several services?

The first solution that comes to mind is distributed ACID transactions. Unfortunately, this solution is far from optimal in terms of coupling, performance, scalability and fault tolerance.

The good news is that there is an alternative that is better suited to microservices architectures: SAGA! The concept is quite old but implementations are relatively recent and propose different flavors. SAGA can be declined in 2 modes: choreography and orchestration (technical or functional). We will see how to implement them concretely with 3 technical solutions: MicroProfile Long Running Action specification, Eventuate Tram and Debezium Outbox Event Router frameworks.

This presentation will give you a global understanding of the transactional integrity problem and how to effectively address it in your next microservices project.

 

Objective of the presentation: 
The objective of this presentation is to understand the often overlooked need for distributed transactions with microservices and how to implement it. Different approaches (functional and technical orchestration, choreography) and technologies (MicroProfile LRA, Eventuate Tram, Debezium) will be showcased. In the absence of a clearly identified solution, more often than not the requirement for transactional integrity is often poorly estimated and implementation is swept under the carpet. Let’s tackle it concretely!
Attendee pre-requisites - If none, enter "N/A": 
Basic understanding of transaction management and microservices.
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