AWS SNS to Lambda Tutorial in Python | Step by Step

SNS and Lambda integration is a crucial component of building event driven applications. In this video, I show you how to hook up a Lambda function to an SNS topic with the sns message content as the input payload. I start out by talking about the general concepts of SNS and Lambda before heading into the console and creating the resources. From there, I show you how to add the necessary permissions and how to test your setup.
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Resources:
SNS to SQS Setup: • AWS SNS to SQS Tutoria...
AWS Lambda Introduction: • AWS Lambda Introduction
Getting started with AWS: • Introduction to AWS | ...
☁Topics covered include:
- Lambda Cost Optimization (memory usage)
- Lambda DLQ (Dead letter queue)
- Lambda XRay (profiling service)
- Lambda Concurrency Gotchas
- SNS
- SNS Encryption
- SNS Access Policy
- SNS Retry Policy
- SNS Filter Policy
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#Serverless
#SNS
#SimpleNotificationService
#Lambda
#AWS

[@alexanderkrasnov6944]

Thank you!
I found it very helpful and definitely in a better way that the official docs present it.
I am looking forward to watch more videos on other topics!

[@BeABetterDev]

Thanks Alex. Would love to hear about areas you're interested in for my future videos.

[@angeltrades3844]

Excellent video man! You explained SNS and Lambda very well!!

[@BeABetterDev]

Glad you liked it!

[@praneeth0820]

Yet another great presentation, as always you rock again !!
Very helpful.

[@BeABetterDev]

Thanks Praneeth!

[@BilalAhmed-nt9gi]

At least the only youtuber I found who actually replies to your messages :) explanation is obviously fantastic and replies to Questions/Comments makes it a complete lecture type (Y) Thanks man for your efforts

[@BeABetterDev]

Thanks Bilal! I read every one!

[@aykhan.g]

thank you for the video, I found it very helpful. For the info, permissions section when you create sns topic also used to give permissions to other aws services (such as s3 ) to publish messages on SNS topic.

[@startprinting]

Fab. These videos are so much better than the AWS docs!

[@BeABetterDev]

Thanks patrick, glad you enjoyed.

[@johnnguyen1655]

yes definitely better than AWS docs

[@brutusforce1852]

Correction: 6:50 , encryption in transit is enabled by default for almost all AWS services. The encryption offered here is server side encryption-- encryption at rest. Often this feature is deemed as worthless and overlooked; however it's extremely to enable and forget about. It's definitely worth the extra layer of security.

[@BeABetterDev]

good callout, thanks brutus!

[@mcan543]

Very well explained in every detail. Just how it should to be. Thank you.

[@daniel280187]

A fantastic tutorial, well explained and concise. Thanks for sharing!

[@BeABetterDev]

You're very welcome!

[@akinwalefemi8728]

you are the boss. thanks

[@BeABetterDev]

Thanks akinwale! Glad you enjoyed :)

[@jimle8372]

Amazing content! Explained in a great, communicative fashion!

[@BeABetterDev]

Thanks Jim! Glad you enjoyed!

[@probhakarsarkar2430]

awesome man!

[@BeABetterDev]

Thank you very much Probhakar!

[@lucky88shp]

Really good tutorial for newbies! Thanks!

[@BeABetterDev]

You're very welcome! Thanks for watching.

[@guryashdhall9529]

Thanks a lot for detailed explanation!

[@RichardHema]

Thank you so much, you explained things so well, thank you for sharing.

[@BeABetterDev]

Glad it was helpful!

[@jorgemariorios6860]

Thank you very much for this video, awesome way to make it easy and interesting you are awesome !

[@BeABetterDev]

You're very welcome jorgemario! Glad you enjoyed :)

[@arunajay8497]

Excellent Tutorial!!!! Thank you :)

[@BeABetterDev]

You're very welcome!

[@MrRounaksoni]

Thank you!!
This video is very helpful

[@BeABetterDev]

Glad it was helpful!

[@karthikeyanasari]

Great Video man,
Its very useful for beginners, I love it.

[@BeABetterDev]

Thank you! Glad you enjoyed.

[@harishdewangan2661]

this is helpful, I am also looking for the same configuration using sam template

[@GabrielVasile]

Awesome! Thanks for this!

[@BeABetterDev]

Thanks Gabriel!

[@dddd1137]

Nicely explain

[@BeABetterDev]

Thanks!

[@yumlive5698]

Wonderful, thank you

[@BeABetterDev]

You're very welcome John!

[@evanserickson]

Great video. Thanks so much!

[@BeABetterDev]

Thanks Evan! Glad you enjoyed :)

[@deonsanchez2508]

great tutorial and explanation.

[@BeABetterDev]

Thanks Deon, glad you enjoyed!

[@NitinSatish]

Very helpful!

[@jiangfenglin4359]

good tutorial! thank you for posting :)

[@BeABetterDev]

You're welcome!

[@johnnguyen1655]

great tutorial, thanks!

[@BeABetterDev]

You are very welcome!

[@sinafereshteh]

Well explained & thank you :)

[@BeABetterDev]

Glad it was helpful!

[@manivikram1350]

Can you explain how to Mute alerts for a process using lambda URL's invoke function ?

[@renejacques8288]

Since there is just one subscriber, Lambda, receiving SNS notification, would it be OK to replace SNS with SQS in this case?

[@BeABetterDev]

Hi Rene, yep that would work fine!

[@foreyes4]

I've done this before, but it wasn't working when using IAC (Terraform). I walked along through the tutorial and was missing the Lambda trigger (14:53) which TF calls a "lambda_permission." Thanks!

[@maazm4722]

Hello is it just for the example that you are using sns to call lambda ? In the other case I don't understand why we don't just directly call lambda

[@anxinhuang6061]

How can I publish the messages to the SNS topic from my application deployed in the EC2?

[@gtn2808]

How do I setup Lambda when I want to receive messages from Pinpoint Longcodes and process it. For example I want to optin a mobile number if I receive a test START from the opted out mobile number

[@shirazabdelkarim9707]

I have an exciting lambda function, how I can add the code to my script ?

[@user-oj9fw9nq7u]

When some file uploads on s3, i want to send to email in all of coginto's use email using aws sns. Is it possible? I watched your s3 trigger lambda video

[@BeABetterDev]

Hi s hyun,
It is definitely possible, you will have to write a bunch of code to do this. The steps I can think of are:
1) On S3 Put, Trigger Lambda
2) In lambda code, query Cognito to get list of all users
3) Subscribe users to SNS (maybe this can be done in advance?)
4) Push message to topic to send notification to users.
hope this helps!
Daniel

[@OkolieRaymond]

Is it possible to get an SNS notification when a user logs into an ec2 instance?

[@BeABetterDev]

Not that I know of but this may be possible via an Eventbridge EC2 event.

[@OkolieRaymond]

@@BeABetterDev I finally found a way to get this done using postfix and i get email notifications

[@MrGabriribeiro]

What if I need lambda to trigger an SNS topic? The Lambda would pass a list to SNS so it can forward the list to the subscribers. Is it possible?

[@juandiegopatinovargas5141]

How can I handle the response from the Payment Processor for example if I am pushing an event from an app or web app. How can I get that response?

[@BeABetterDev]

Hi Juandiego,
That is a great question. Unfortunately the nature of publishing to SNS is asynchronous. That is, you as the publisher to the topic are decoupled from how other listeners are using the data you are publishing. If you would like to retrieve the result of one of the actions your subscriber is taking, you would need to store state somewhere (perhaps dynamodb), and set up an API on your application layer that can retrieve said state.
Hope this helps.

[@carloscoliver9427]

Hi.. I Tried to make the exercise but didn't show me the "amazon cloudwatch logs" as the destination from Lambda. I don't If there is because a change in Aws

[@BeABetterDev]

Hi Carlos,
Are you sure you selected the basic lambda execution role when setting up your lambda?

[@aussietramp]

What i dont get...is ...IN REAL LIFE those messages you pubblish...what are they?is it possible to do an example? Thanks

[@careymain3036]

Instead of pushing the data how do you pull event based from an api?

[@BeABetterDev]

Hi Carey, I'm not understanding your question. Can you elaborate on your use case?

[@careymain3036]

AWS Simplified how do you pull or request data from web api like weather or zip code data I have API and key to like AWS S3

[@switchbranch8411]

Does anybody know why I might be receiving the "internal error" message?

[@BeABetterDev]

Hi there, can you post the message you are receiving via Cloudwatch Logs?