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SNS

Pragya Keshap answered on February 21, 2023 Popularity 1/10 Helpfulness 1/10

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    SNS is a highly available, fully managed Pub-Sub system which allows high-throughput, push-based, many-to-many messaging.

    A publisher ( also event producer ) will send events to one SNS Topic - which is basically a group for collecting messages.

    Data is immediately forwarded (and does not persist) to the Subscribers of that Topic via different Transport Protocols:

    HTTP/HTTPS

    Email

    SMS

    SQS

    A Subscriber is the actual service (or user, endpoint) that was interested in the event/message and will process that information - a Lambda, SQS, HTTP/S webhooks, Mobile Push, SMS, Emails.

    Lambda is a supported subscriber but not a transport protocol ( while Amazon SMS and SQS are )

    When a message is published, ALL subscribers to that topic will receive a notification of that message. That is a very important aspect of SNS, which introduces an architecture pattern called Fan Out.

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    Contributed on Feb 21 2023
    Pragya Keshap
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