aws-messaging-and-streaming

To choose the right AWS messaging or streaming service, determine whether your workload needs decoupled task/event messaging or durable, replayable streaming data. Map your requirements for message deletion versus retention, replay behavior, and ordering to the appropriate service semantics.

AWS messaging and streaming differ primarily in consumption semantics. Messaging services like SQS delete messages after consumption, while streaming services like Kinesis Data Streams retain records for durable, replayable access, impacting how you handle event replay and ordering.

Use Amazon EventBridge instead of SNS when your pub/sub fan-out requires advanced event routing based on content matching. EventBridge provides structured event routing capabilities, whereas SNS is optimized for high-throughput message delivery to broad sets of subscribers.

To configure a DLQ policy and avoid confused-deputy issues, apply least-privilege resource policy scoping using aws:SourceArn and aws:SourceAccount conditions. This ensures only authorized services can write to your dead-letter queues and prevents security misconfigurations.

SNS to Data Firehose delivery requires specific newline handling to avoid data parsing issues. Firehose expects properly delimited records, so you must ensure SNS messages include appropriate newline characters for successful downstream processing.

You can use Amazon MQ for JMS migration to AWS event-driven architectures. Amazon MQ supports standard messaging protocols and APIs, making it a suitable bridge for migrating existing JMS-based applications to the cloud without immediate re-architecture.