This talk is relevant for any team using queues / pubsub / or other message brokers and anyone using events for critical application behavior.

The are fundamental challenges related to scaling message processing. Concerns like network interactions, retry mechanism, and transactionality come with hidden complexities that can result in undesirable unplanned work / operational issues.

Do you know why you need to be able to process duplicated messages? Do you know why, despite brokers guaranteeing the ordered delivery of messages, you may need to be able to process messages out of order? In this talk, we will come to understand the most critical patterns and approaches necessary to implement fault-tolerant and scalable messaging.