SQS

SQS provides a simple replay buffer between investigation and processing.

ReplayQueue

Replay Lambda sends one message per event:

{
  "event_id": "...",
  "entity_id": "...",
  "event_time": "2025-12-28T23:59:59Z",
  "s3_bucket": "...",
  "s3_key": "raw/source=.../event_id=....json"
}

Why SQS?

• Decouples replay from processing.
• Lets you scale the processor independently.
• Provides backpressure and retry behavior.

Notes

• Processor is optional (EnableProcessor=true wires SQS → Processor Lambda).
• If processor is disabled, SQS still collects replay messages for external consumers.