Message Delivery Guarantees

Explore the key concepts of message delivery guarantees, including at-most-once, at-least-once, and exactly-once delivery. Learn how to apply persistence and idempotency to build reliable and scalable distributed systems with Elixir.

We'll cover the following...

At-most-once delivery
At-least-once delivery
Exactly-once delivery

Good developers often associate certain words with particular pitfalls or techniques for avoiding them. Large dataset aggregation suggests the MapReduceMapReduce is a programming model and an associated implementation for processing and generating big data sets with a parallel, distributed algorithm on a cluster. pattern. Immutability may suggest functional languages. In this lesson, we’ll build another association. Whenever we consider events, we should also consider message delivery guarantees.

At-most-once delivery

Consider a simple welcome email that we might want to ...

1.Introduction

2.Three Adoption Stories

3.Concept: Team Building

4.Concept: Ensuring Code Consistency

5.Concept: Legacy Systems and Dependencies

6.Development: Making the Functional Transition

7.Development - Distributed Elixir

Project

8.Development - Integrating with External Code

9.Production - Coordinating Deployments

10.Production - Metrics and Performance Expectations

11.Production - Making Your App Production Ready

12.Conclusion

13.Appendix

Message Delivery Guarantees

At-most-once delivery