1. What is message batching in Amazon SNS?
Answer: Message batching is a feature in Amazon SNS that enables grouping of multiple messages into a single message for efficient delivery. It reduces the number of requests needed to publish messages and can improve overall throughput.
2. How can you configure delivery status logging in Amazon SNS?
Answer: Delivery status logging can be configured using the AWS Management Console. It allows you to track the status of messages that have been published to a topic and delivered to subscribers. You can view delivery status attributes for topics subscribed to Amazon SNS endpoints using the AWS SDKs.
3. How does message deduplication work in Amazon SNS?
Answer: Message deduplication is a feature in Amazon SNS that ensures that only unique messages are delivered to subscribers. It uses a message ID to identify duplicate messages and discards them before they are delivered. Message deduplication is enabled by default for FIFO topics.
4. What are dead-letter queues (DLQs) in Amazon SNS?
Answer: Dead-letter queues (DLQs) are used in Amazon SNS to handle messages that cannot be delivered to their intended recipients. They provide a way to store and review failed messages, and can help identify and resolve issues with message delivery. DLQs can be configured for subscriptions and topics.
5. How can you enable raw message delivery in Amazon SNS?
Answer: Raw message delivery can be enabled using the AWS Management Console. It allows you to send messages in their original format without any additional processing or formatting. Raw message delivery is useful for messages that require specialized handling or that contain binary data.