New serverless pattern - Lambda response streaming from DynamoDB #2481
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
ellisms
requested changes
Sep 23, 2024
Contributor
ellisms
left a comment
ellisms
left a comment
There was a problem hiding this comment.
Thanks for your submission @sandykumar93 . Requesting a few minor edits.
lambda-streaming-ttfb-write-sam-with-dynamodb/example-pattern.json
Outdated
Show resolved
Hide resolved
lambda-streaming-ttfb-write-sam-with-dynamodb/example-pattern.json
Outdated
Show resolved
Hide resolved
Contributor
Author
|
@ellisms thank you for taking the time to review and provide suggestions. I have applied all the suggestions in the latest commit. I have resolved all the comments except the one for data population. Please have a look when possible and let me know if any other changes are required. |
Co-authored-by: ellisms <114107920+ellisms@users.noreply.github.com>
ellisms
approved these changes
Sep 24, 2024
Contributor
|
Thanks, adding to the publishing queue. |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Issue #2482
Description of changes:
The newly added pattern shows how to use Lambda response streaming to incrementally retrieve and stream DynamoDB query / scan results using the write() method. Instead of waiting for the entire query / scan operation to complete, the Lambda function streams data in batches by setting a limit on the number of items per query and sending each batch as soon as it's retrieved. This improves the time-to-first-byte (TTFB) by streaming results to the client as they become available.
By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.