SQS partial batch response failure feature tutorial 

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You are welcome, Santosh! And I am glad it was helpful. Please like, share & subscribe :)

10 is the maximum batch size. If you have 2 messages in the queue, you won't wait until you have 10 messages to process the first two that arrived.

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It depends on your needs, but in general yes I think the DLQ (on the SQS queue, not lambda) would still be useful, because the failed messages might be permanent failures (i.e. never succeed on retry), so eventually the max number of receives would get hit, and you probably want a DLQ to capture those.

In this video, I have used Keynote. In a few other videos, I have used Manim. I hope this helps. Please like, share & subscribe :)