Tag: SNS

SNS (Simple Notification Service)

admin
  • SNS is a push mechanism, as supposed to be SQS which is pull mechanism.
  • It pushes cloud notification directly to the mobile devices.
  • SNS can deliver the message via SMS/Email to SQS or any HTTP end point.
  • To avoid message loss, message published in the SNS are stored redundantly across multiple availability zone.  
  • SNS Topic
    • SNS allows to group multiple recipients using the topics. A topic is an access point for allowing recipients to dynamically subscribe for identical copies of the same notification.
    • One topic can support deliveries to multiple end point types – e.g. you can group together iOS, Android and SMS recipients.
  • SNS Benefits
    • Instantaneous push based delivery (no Pulling)
    • Simple API and easy integration with applications.
    • Flexible message delivery over multiple transport protocol.
    • Inexpensive, pay-as-you-go model with no up-front costs
    • Web-based AWS management console offers simplicity of a point-and-click interface.
  • SNS vs SQS
    • Both are messaging services in AWS.
    • SNS is Push
    • SQS is Pull
  • SNS Pricing
    • $0.50 per 1 million SNS Requests.
    • $0.06 per 100000 Notification deliveries over HTTP.
    • $0.75 per 100 notifications delivered over SMS.
    • $2.00 per 100000 notifications delivered over email.