What are AWS Step Functions? (and why you should love them)

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AWS Step functions allow developers to offload application orchestration into a fully managed AWS service. This means instead of handling partial failure cases, retries, and other "non happy cases" as part of your application logic, you can modularize your code into "Steps" and let AWS Step Functions worry about the details. In this video, I give you a practical example of how you may solve a problem using traditional methods, followed by how you may achieve the same thing using Step Functions.
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00:23 Step Function Summary
03:32 Step Function Explanation with an Example
08:14 Step Function ASL Example with Dynamo, Lambda, SNS
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☁Topics covered include:
- AWS Step Functions
- Tasks
- Retry Policy
- Lambda Integration
- Dynamo Integration
- SNS Integration
- Cost Structure
- Scalability
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Опубликовано:

28 июн 2024

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Комментарии : 89

@fidgetspinner343 4 года назад

You see, here is an example if you needed it that quality shines through in the end, it is so tough starting off a RU-vid channel and keeping going at look to gain those views and subscribers but a tweet today from from Jeff Barr, the king of AWS!! Bravo and keep up the great content!

@BeABetterDev 4 года назад

Thank you!

@joaosantino717 Год назад

Great playlist! Thanks for your time, effort and for sharing your knowledges with us!

@MagosVeridian Год назад

Studying for the SysOps exam, this really helped me understand step functions. Thanks!

@praneeth0820 3 года назад

WOW !! Now that's the best possible way of explaining the use case of this service, crystal clear ! Great work !!!!

@BeABetterDev 3 года назад

Thanks so much Praneeth! Glad you enjoyed. Daniel

@RahulGupta-sv2vb 3 года назад

All i just want to say, the way you explain the concepts is pretty damn amazing. Highly appreciated. Keep up the good work.

@thinker5270 Год назад

100% true

@zenithwogwugwu6709 Год назад

This is really a great demonstration, I'm sold on step functions!🙌

@TheOntheskies 3 года назад

Thank you for the awesome explanation with awesome graphics. Solid!

@BeABetterDev 3 года назад

Glad you liked it!

@rohitupadhyay4665 4 года назад

Thanks for these great tutorials.. I was able to design and run my first step function work flow to Train and deploy sagemaker model, learning through your content..

@BeABetterDev 4 года назад

Great work Rohit! Glad you are enjoying these videos :)

@thinker5270 Год назад

Thanks a lot for the wonderful video. Got to learn a lot.

@ianlaw4333 2 месяца назад

Hey man Just wanna give you a shoutout, I am currently preparing for my SAA exam and found your videos super useful and I really love the way you explain the architectures with examples. Thank you so much !!!

@DodaGarcia 3 года назад

This is very interesting! At first glance it seemed like overkill, I thought here "Why get vendor-locked for the sake of a workflow so simple to write in code?" But you make a good point in that functionality that seems simple on the surface often ends up being really complex to implement once you take into account not only the many ways each step can go wrong, but also things like atomic transactions and logging.

@kenanekinovic2803 2 года назад

There is also code here, but not shown. How would lambdas work if you do not write some code? :)

@sainadha 2 года назад

Thanks for these great tutorials.... easily understandable.

@BeABetterDev 2 года назад

You're very welcome Amperayani! Glad you enjoyed.

@migueleg6570 Год назад

Great video thank you!

@StockDC2 2 года назад

Hello, you mentioned that step functions help when exceptions are thrown but using your diagram, couldn't the same model work using the "conventional" method? You could set up a DLQ on the pin authorization service so that when it fails, a message gets thrown into the DLQ which the pin authorization service could try to process again without having to write to DynamoDB?

@raviy10 2 года назад

Thank you! It is very detailed and clear (y)

@BeABetterDev 2 года назад

You're very welcome!

@TomerBenDavid 4 года назад

Splendid 👌

@jriverox 4 года назад

Excelente introduction to step functions

@BeABetterDev 4 года назад

Thanks Jhony! Glad you enjoyed.

@KleberJS 3 года назад

Thank you so much! You're great!

@BeABetterDev 3 года назад

You're welcome! Glad it helped :)

@alexovsianycoff6556 2 года назад

Thanks for the Video! Which soft are you using for making presentations?

@brianpwnsjustin 4 года назад

Hey I really appreciate your channel so I am just sending good thoughts.

@BeABetterDev 4 года назад

Thank you. I really appreciate the kind words of support.

@akshatagupta1041 Год назад

Amazing Explanation

@BeABetterDev Год назад

Thanks Akshata!

@wyntertsai6848 4 года назад

Very very good! Keep going!

@BeABetterDev 4 года назад

Thank you for your kind words!

@HambaAllah-xn2zp 4 года назад

Thanks for the video.

@BeABetterDev 4 года назад

You are very welcome Furqon!

@joyebot7371 Год назад

thank you

@abhi20aug 2 года назад

Very Helpful

@BeABetterDev 2 года назад

Thanks Abishek!

@liang-chiwuu4785 4 года назад

This is very useful even for AWS employees 😉 Thanks for the great work.

@BeABetterDev 4 года назад

Thanks so much Liang-Chi!

@keithsato6993 6 месяцев назад

Thanks!

@BeABetterDev 6 месяцев назад

Thank you so much for your generosity!

@TheBjjninja 3 года назад

It would be super helpful to see step function being used in the context of multiple ETL jobs and also Sagemaker to generate predictions.

@tejaszarekar9145 2 года назад

amzing solution arch right there

@jesseallaway1149 3 года назад

Thank you!

@BeABetterDev 3 года назад

You're very welcome!

@pradippsm1983 3 года назад

How to catch lambda payload in step function task catch block?

@chandra4996 4 года назад

very useful video

@BeABetterDev 4 года назад

Thanks a lot!

@sagarsinghrajpoot6788 4 года назад

Very useful :) Liked and Subscribed :)

@BeABetterDev 4 года назад

Thank you and welcome to the channel!

@DileepMemories 2 года назад

Please give clarity on what is TLDR, waiting for your reply

@obszczymucha1337 Год назад

Are you still waiting? :D

@George-bi8sj 2 года назад

Brilliant, such a simplified explanation that even an idiot such as myself can understand. Thank you!

@BeABetterDev 2 года назад

Thanks George! Glad you found this useful.

@arzlanali5591 10 месяцев назад

Great content, but on step 3 would it not be another potential option "Step Up"? ie: OTP

@kenanekinovic2803 2 года назад

First of all I would like to say that your video is great. I have some questions though. I have analyzed the diagram you used at the end of the video, and word-by-word wrote this in a pseudocode: function easy(data) { do { storeHistory(data) } while (error || attemptNo

@bransonS 2 года назад

Some things you gain are: Easily integrate with aws services and have retry and back off logic built in to calls to other services that changes based on which service is called. Built in traceability, it’s easy to debug step functions because of the history and logging. And you can standardize/abstract state management a level above your services, so that anyone can understand your orchestration without caring about implementation. And that standard is well-documented, popular, and always growing in features. Like you said, you can write all of these things yourself, but you have to decide if the cost of using step functions is worth the time(money) you’ll save by using a standard set of features that has been created by someone else (like any library) I’m sure I missed other stuff

@satyak1337 2 года назад

I am working on a appointment app which require checking time slots and credit card payment. Does it make sense to use step function or should i do this in single lambda function ?

@BeABetterDev 2 года назад

Hi Satya, at a quick glance Step Functions seem like a good option for your use case.

@noeliaroot499 3 месяца назад

what is the difference between this and Simple Workflow Service?

@nathanbenton2051 3 года назад

Great vid! Do you have anything Udemy or something like that?

@BeABetterDev 3 года назад

Thanks Nathan! I don't have any courses yet available but I am considering starting one on Udemy. I am actually working on an AWS book right now. You can subscribe to my newsletter at the following URL to get informed when it is released. Thanks for watching! mailinglist.beabetterdev.com/

@ruixue6955 2 года назад

0:28 why aws Step Functions 1:13 step functions are *orchestration for an application* 1:45 native integration with aws services such as Lambda, SNS, sqs, Dynamo etc. 3:37 example

@DevOpsCave 3 года назад

0:23 ok, where is the link?

@gsminfy 3 года назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-s0XFX3WHg0w.html

@rammeharsharma6433 3 года назад

Please Make a video series of Media Services specially MediaConvert and How to implement DRM Security . Whole process of VOD

@NomadAndy 3 года назад

I just had one question as a person who just watched this video for fun.... is the "Pin" like your personal pin on the card or is that a special pin the card has through say Visa or Mastercard or one of those things. I am just curious because the way you described a failure.

@BeABetterDev 3 года назад

Hey Andrew, I was referring to the Authorization pin we use at a credit card terminal. If a transaction comes in, we need to verify the PIN to make sure the user is the actual owner of the card. Hope this cleared things up.

@NomadAndy 3 года назад

@@BeABetterDev ohhhh amazing! Thank you for answering my question. I loved the video and it was very interesting.

@ambikesandboards 3 года назад

Pretty damn brain dead simple, thanks!

@Cahnisama 7 месяцев назад

I am stuck at this queue, help me step-function!

@aryic0153 3 года назад

what is the issue in this code from __future__ import print_function import json import urllib import boto3 import datatime print("Loading function") def process_purchase(message,context): print("Recieved message from step functions:") print(message) response={} response['TranscationType'] = message['TranscationType'] response['Timestamp'] = datatime.datatime.now().strftime("%Y-%m-%d %H-%M-%S") response['Message'] = 'Hello from lmabda land inside the ProcessPurchase Fuction' return response getting error in AWS step functions as The cause could not be determined because Lambda did not return an error type. Returned payload: {"errorMessage": "Unable to import module 'lambda_function'"} { "Comment": "A simple AWS Step Functions state machine that automates purchase and refund.", "StartAt": "ProcessTransaction", "States": { "ProcessTransaction": { "Type" : "Choice", "Choices": [ { "Variable": "$.TransactionType", "StringEquals": "PURCHASE", "Next": "ProcessPurchase" }, { "Variable": "$.TransactionType", "StringEquals": "REFUND", "Next": "ProcessRefund" } ] }, "ProcessRefund": { "Type": "Task", "Resource": "arn:aws:lambda:us-east-2::function:ProcessRefund", "End": true }, "ProcessPurchase": { "Type": "Task", "Resource": "arn:aws:lambda:us-east-2::function:ProcessPurchase", "End": true } } }

@senninrendan 2 года назад

"Step Function What are you doing? Step Function did you just access my Resources?"

@nitinjaiman 2 года назад

Crisp.

@elgs1980 2 года назад

But you have to couple your business to a new layer of dependencies which depends on how you justify it.

@granitetie Год назад

I'm really not convinced of the value prop of step functions. He's saying, rather having complex code to handle the possible failure paths, it's very easy to use ASL language. Except, if you wrote that logic in code, it wouldn't be as nearly as complex as he implies. You could fit it all in a single code file using a language that other devs would already understand. If you used step functions, you're basically using an amazon specific proprietary "language" that is modeled using json (yuck). You lose the ability to run and test this logic locally (without tools to mock AWS functionality, which I would say are leaky abstractions). To even get to the point where you setup your dev environment to run this code you'll have needed to talk to the devops team to get you setup with a personal dev account in AWS. How can one say with a straight face that this is a simpler development workflow than just writing the service in normal non-proprietary code?

@Atpugtihsrah Год назад

Agree with you. This was exactly what I was thinking while going through the video. I'll watch the entire series and then see if StepFunctions really make sense (maybe I didn't understand the pros/cons of it deep enough) Regarding the state saving and starting from the "failed/exception" state is considered, this can easily be done by saving the state in a DDB and reading the state & resuming from it in the next run.

@grilledlettuce5130 Год назад

You sound like moistcritikal

@BeABetterDev Год назад

I've heard this many times haha

@mqtt07 Год назад

Oh no, here is another attempt to replace a general purpose programming language with a tool whose main purpose is to tie your hands and legs to a specific cloud provider

@Rickety3263 7 месяцев назад

Not really. That’s like saying the aws api or cli is trying to be a replacement too. It’s not. It’s just an api

@DioXin 11 дней назад

How is this useful?

@user-vq4ws5lf3v Месяц назад

you kidding me? why all this shit?!?! god damn. It all make not sense!!!! I can describe this as "Let's make software development hard again!". incredible