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feat: add --no-reload flag to disable hot reload for local commands#58

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fix/no-reload-flag
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feat: add --no-reload flag to disable hot reload for local commands#58
cortex-assistant[bot] wants to merge 1 commit into
developfrom
fix/no-reload-flag

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@cortex-assistant cortex-assistant Bot commented Mar 20, 2026

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Fixes #57.

Adds a new --no-reload flag to sam local start-api and sam local start-lambda commands that disables the file watcher/hot reload when used with --warm-containers. This addresses the significant performance issue on Windows where Microsoft Defender scanning causes the watchdog-based file observer to take 2-5 minutes to initialize.

Changes:

  • Added --no-reload CLI option in options.py
  • Wired the option through start-api and start-lambda CLI commands
  • Plumbed through InvokeContext to WarmLambdaRuntime
  • Made LambdaFunctionObserver creation conditional in WarmLambdaRuntime via a _NoOpObserver
  • Added tests for the new flag

@cortex-assistant cortex-assistant Bot mentioned this pull request Mar 20, 2026
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@Stevoni

Stevoni commented Apr 6, 2026 •
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Hey there, I'm looking forward to this, do you know if this mergable into the main SAM repo?

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area/local/invoke area/local/start-api area/local/start-invoke pr/external stage/needs-triage

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Feature request: SAM Local Flag to Disable Hot Reload

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@Stevoni