zlacker

>>mpweih+(OP)
One important drawback of SQS is that it's eventually consistent, you can read the same message twice from different workers. Nevertheless we keep using it with additional checks when it's critical, it's still the cheapest solution by maintenance.

>>varela+Z9
Implementing a queue that does exactly once delivery is a very hard problem and comes with its own trade-offs. Mostly around scalability and reliability.