DOC-303: Document concurrent SQS event source mapping pollers#810
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quetzalliwrites wants to merge 1 commit into
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DOC-303: Document concurrent SQS event source mapping pollers#810quetzalliwrites wants to merge 1 commit into
quetzalliwrites wants to merge 1 commit into
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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.
quetzalliwrites
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July 23, 2026 13:43
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Summary
ScalingConfigfor SQS Standard as 🟢 implemented in the Lambda Behaviour Coverage table (lambda.mdx), now thatScalingConfig.MaximumConcurrencycaps the number of concurrent pollers. SQS FIFO stays 🟡, since a single poller is always used there to preserve message-group ordering andMaximumConcurrencyhas no effect.[^3]to describe the new concurrent-poller behavior for SQS Standard.LAMBDA_EVENT_SOURCE_MAPPING_SQS_POLLER_COUNTconfiguration variable (default5) inconfiguration-options.md.Related engineering PR: https://github.com/localstack/localstack-pro/pull/7386
Linear: https://linear.app/localstack/issue/DOC-303/doc-featlambda-spawn-concurrent-pollers-for-sqs-event-source-mappings
Test plan
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