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DOC-303: Document concurrent SQS event source mapping pollers - #810

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quetzalliwrites merged 1 commit into
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doc-303-doc-featlambda-spawn-concurrent-pollers-for-sqs-event-source
Jul 30, 2026
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DOC-303: Document concurrent SQS event source mapping pollers#810
quetzalliwrites merged 1 commit into
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doc-303-doc-featlambda-spawn-concurrent-pollers-for-sqs-event-source

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@quetzalliwrites

@quetzalliwrites quetzalliwrites commented Jul 23, 2026

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Summary

  • Mark ScalingConfig for SQS Standard as 🟢 implemented in the Lambda Behaviour Coverage table (lambda.mdx), now that ScalingConfig.MaximumConcurrency caps the number of concurrent pollers. SQS FIFO stays 🟡, since a single poller is always used there to preserve message-group ordering and MaximumConcurrency has no effect.
  • Update footnote [^3] to describe the new concurrent-poller behavior for SQS Standard.
  • Document the new LAMBDA_EVENT_SOURCE_MAPPING_SQS_POLLER_COUNT configuration variable (default 5) in configuration-options.md.

Related engineering PR: https://github.com/localstack/localstack-pro/pull/7386
Linear: DOC-303

Test plan

  • astro build completes successfully
  • starlight-links-validator reports all internal links valid

Mark SQS Standard ScalingConfig as implemented in the Lambda
Behaviour Coverage table now that MaximumConcurrency caps concurrent
pollers, and document the new LAMBDA_EVENT_SOURCE_MAPPING_SQS_POLLER_COUNT
configuration variable.
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@quetzalliwrites
quetzalliwrites merged commit 5aa740b into main Jul 30, 2026
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quetzalliwrites deleted the doc-303-doc-featlambda-spawn-concurrent-pollers-for-sqs-event-source branch July 30, 2026 11:05
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