New serverless pattern - CloudFront to APIGW with alternative origin for large uploads #2684
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added 2 commits
March 12, 2025 10:07
ellisms
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Apr 2, 2025
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Hi @interludic2000 requesting a few minor edits and also found 2 test cases that don't seem to pass. Can you please review?
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| ## Testing |
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Move the CDK setup steps to the Deployment instructions section.
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| # Amazon Cloudfront to APIGW routing to alternative origin for large payloads | |||
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| # Amazon Cloudfront to APIGW routing to alternative origin for large payloads | |
| # Route large API payloads to alternate origin | |
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| # Amazon Cloudfront to APIGW routing to alternative origin for large payloads | |||
| API Gateway has a [payload limit of 10mb](https://docs.aws.amazon.com/apigateway/latest/developerguide/limits.html#http-api-quotas) which cannot be increaed. This pattern shows how to use Lambda@Edge to route client POST request to an alternative origin based on payload size of the POST request or URL. | |||
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| API Gateway has a [payload limit of 10mb](https://docs.aws.amazon.com/apigateway/latest/developerguide/limits.html#http-api-quotas) which cannot be increaed. This pattern shows how to use Lambda@Edge to route client POST request to an alternative origin based on payload size of the POST request or URL. | |
| Amazon API Gateway has a [payload limit of 10mb](https://docs.aws.amazon.com/apigateway/latest/developerguide/limits.html#http-api-quotas). This pattern shows how to use Lambda@Edge to route client POST request to an alternative origin based on payload size of the POST request. | |
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| ## How it works | ||
| A Cloudfront distribution is created with 2 origins: |
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| A Cloudfront distribution is created with 2 origins: | |
| An Cloudfront distribution is created with 2 origins: | |
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| A Cloudfront distribution is created with 2 origins: | |
| An Amazon CloudFront distribution is created with 2 origins: | |
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| ## How it works | ||
| A Cloudfront distribution is created with 2 origins: | ||
| * Default Origin - API Gateway with a Lambda Integration that returns stub responses based on HTTP request method. |
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| * Default Origin - API Gateway with a Lambda Integration that returns stub responses based on HTTP request method. | |
| * Default Origin - API Gateway with an AWS Lambda Integration returning a stub responses based on HTTP request method. | |
| ## How it works | ||
| A Cloudfront distribution is created with 2 origins: | ||
| * Default Origin - API Gateway with a Lambda Integration that returns stub responses based on HTTP request method. | ||
| * Custom Origin - A mock HTTP endpoint which sends a response with information from the request. We are using echo.free.beeceptor.com but you can substitue this with other endpoint URLs. |
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| * Custom Origin - A mock HTTP endpoint which sends a response with information from the request. We are using echo.free.beeceptor.com but you can substitue this with other endpoint URLs. | |
| * Custom Origin - A mock HTTP endpoint which sends a response with information from the request. We are using echo.free.beeceptor.com but you can use any other endpoint. | |
| #### Test 3: | ||
| A POST request that CloudFront will route to a custom origin as the payload size is larger than `MAX_FILE_SIZE` defined in `lambda.mjs`. | ||
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| `curl https://<CloudFront distribution URL> -i -X POST -F 'data=@largeFile.example` |
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This test fails with the {"message": "POST request processed by API Gateway!"} response.
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| #### Test 4: | ||
| A POST request to a specific URL that CloudFront will route to a custom origin based on the Behaviour defined in `app.py`. |
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This test fails with {"message":"Missing Authentication Token"}
ellisms
requested changes
Apr 2, 2025
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| 1. Delete the stack | ||
| ``` | ||
| cdk destroy |
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deleting the stack ends with the following error for the Lambda function:
Please see our documentation for Deleting Lambda@Edge Functions and Replicas.
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Issue #, if available:
Description of changes:
API Gateway has a payload limit of 10mb which cannot be increased. This pattern shows how to use Lambda@Edge to route POST request to an alternative origin based on payload size of the POST request or URL.
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