Cross Origin Resource Sharing (CORS) - Explained with Example & Demo | API Gateway & Lambda

[@cloudwithraj]

Timestamps added since we cover lot of stuff in this video. Hope this helps your viewing experience.

[@snaidu70]

Raj, all your explanations are very good. I cannot thank you enough.

[@nickdube7881]

Thank you so much. I was struggling with the CORS error between my API and my S3 bucket for days until I watched your video. I really appreciate your work!

[@cloudwithraj]

Glad it helped Nick!

[@mohammadikram687]

Whenever i see your videos it's like jackpot of a knowledge. You are doing a great work sir🙏🙏❤️. I was confused about postman requests to my springboot Microservices in which we don't need any cors policy but now i know why we dnt need that.

[@GoluKidsLearning174]

I found it most useful video on CORS in youtube

[@cloudwithraj]

Glad it was helpful!

[@betterwithrum]

I couldn't get mine to work until the last section demo where you showed adding the header. Nothing worked until I did that.

[@altma61]

Thanks

[@cloudwithraj]

Ty so much Alexandru for the super thanks. Very very appreciated. Glad that the content was helpful 🙌

[@SahilKaironVlogs]

Great video Raj. It would have been a plus if you would have added about access control expose headers. I was a little confused with that.

[@sardonyx_]

What a fantastic explanation of CORS with API Gateway! Thanks Raj!! I'm sharing this with my coworkers!

[@cloudwithraj]

Glad it was helpful! Ty for the kind gesture of sharing with your co-workers

[@zaheer13165]

Thanks alot dude, You explanation was so easy to follow. i got the concepts now.

[@vrindavaneshwari_ju_ki_kripa]

Luv u sir. U solved my problem!!!

[@1989arrvind]

Great explanation 👍👍👍👍

[@cloudwithraj]

Glad you liked it!

[@pasumarthijahnavi123]

I have created a load balancer for a service(spring). I am trying to use the balancer URL in my angular Proj. I am getting this Cros error. Is there any solution for this? In the spring service controller do I need to use cross-origin annotation and deploy in that particular environment (or) should I add anything else? Please help me with this :)

[@fssalihb]

you saved my life thanks, very thourogh explanation

[@cloudwithraj]

Glad it helped!

[@israilkarud9293]

Great explanation ❤️

[@-Altera-]

I still get an error for "Cross origin request blocked: the same origin policy disallows reading the remote resource at . CORS preflight response did not succeed (status code 500) and CORS request did not succeed (null)". Been struggling with this for a while.

[@abhinavpratapsingh4445]

Can't we send array of origins in access control allow origin via integration response or lambda?

[@rationalsage1084]

Nice video. Is there a book you read to learn this stuff?

[@cloudwithraj]

I read the developer guide from AWS Michael. They are the best source of info. However, there is lot of info in the guide, I try to extract the relevant info for folks for these videos. I am glad you liked the video. Thanks for watching.

[@rjkal]

Really good explanation! Thanks man.

[@cloudwithraj]

Thanks Mr. Darth Vader 🚀

[@carlosalvarez-cascos5225]

Good explanation, I followed your tips. Thanks. Still I keep getting an error when requesting data from javascript to my aws REST api , with lambda in the backend. Things go well until I enable cache, still works from sometime and then it fails with your fetch "has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.". I just flush the cache and works again from different origins. Any idea?

[@afitani]

Thank you. Can you please share a video for CORS configuration on HTTP API.

[@cloudwithraj]

Will keep this in mind Toyam for future videos.

[@deepteshagrawal]

I am confused...how at the very first place...browser has sent a Preflight check when it was not enabled for non simple requests? while for Simple request demo...it didn't and the cors is also not enabled...then it should pass the request.

[@harshverm776]

Hi, When I am enabling cors the all conditions are not passing some are failing. What can I do in this case? For you all passed.

[@ngneerin]

Please do a video on AWS HTTP API Gateway CORS, specially for cookies

[@jonbrown7962]

Thanks for the explanation of CORS. So, in the slide, you have the browser sending the pre-flight OPTIONS request specifing the origin. Then it gets a response, then sends the get request. But in your example code, It's just sending the get request. But when you open the network tab in dev tools, it DID make the OPTIONS request. How do you get that behavior without coding it explicitly? I've got a project hitting API Gateway, but there's no options requests to begin with.

[@protonb6090]

the browser is doing that part automatically, you always code for GET only and you get an OPTIONS + GET

[@elvissanchez2703]

Thank you! :)

[@PriThVi_RedDy]

@AgentofChange This is awesome. Can you also please share this sort of projects on Git. That is so helpful.

[@vishwasgupta3180]

Great

[@wangpengce6618]

Thanks a lot! Really nice explanation.

[@cloudwithraj]

Glad it was helpful!

[@atulsinghbankoti750]

nice explanation of CORS...

[@cloudwithraj]

Glad you liked it. Thanks for watching!

[@cassianoperes2062]

Pretty nice

[@harithzainudin9594]

i really like the way you explain. from now onwards. looking forward for all of your video.. im new to aws and i watch a lot of your video to learn! please do more on explaination and tutorial! you get a like, subscribe and share from me! thank you so much :)

[@cloudwithraj]

Thanks Harith, so glad my videos are helping your AWS journey. Thanks for the like, sub, and share 🙏

[@sstoi]

Never thought i would learn programming from James Charles

[@cloudwithraj]

Hahahaha, I do see the similarity. Thanks for watching the video!

[@arivumanis]

👌

[@bigboss-ku3wy]

Hey Arivu, good day to you. may I know where do you work? Your linkedin profile? I have some doubts in AWS and I'm from AP

[@arivumanis]

@@bigboss-ku3wy Hi thanks for your interest, I suggest check out the Udemy course "Rocking AWS CloudFormation, CDK with DevOps, Interview Guide " by Rajdeep Saha(same person of this KZbin channel) which helped me a lot and he can clarify any doubts.

[@splashful]

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