SNS Flashcards
This deck aims to help retain concepts related to the SNS service.
Which AWS service facilitates message delivery from publishers to subscribers, often referred to as producers and consumers?
Amazon Simple Notification Service (SNS)
What is the maximum message size that SNS can handle?
256 KB
What is the resiliency posture of the SNS service?
SNS is a region-resilient public AWS service
Which service is commonly used across AWS for notifications?
Amazon Simple Notification Service (SNS)
How can SNS be used in a cross-account environment?
By using a resource-based policy on the SNS topic
What are the primary features of Amazon SNS?
- Delivery status logs (for HTTP, Lambda, SQS)
- Delivery retries
- Server-side encryption (SSE)
What SNS component represents a logical access point and acts as a communication channel?
A Topic, controls permissions and defines configurations
Which SNS component is responsible for sending messages to topics?
Publisher
Which architecture is typically referred to as a fanout?
A single SNS topic with multiple SQS queues as subscribers
Which SNS component subscribes to a topic to receive messages sent by the publisher?
Subscriber (e.g. HTTP(S), Email (JSON), SQS, Mobile Push, SMS Message, Lambda)
What policy can be applied to an SNS subscriber to ensure they only receive relevant messages?
Filter policy
