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Simulated network drops + retries. Watch how each mode handles duplicates and losses.
What you're seeing
At-most-once: send and forget. Drops on failure. Used for non-critical telemetry.
At-least-once: retry until ACK. Duplicates possible (consumer must dedupe).
Exactly-once: at-least-once + idempotency keys at the receiver. The consumer dedupes based on the key.
★ KEY TAKEAWAY
At-most-once: drop on failure. At-least-once: duplicate possible. Exactly-once: at-least-once + idempotency at receiver.
▶ WHAT TO TRY
- Switch modes and send 10 messages.
- Compare duplicates and losses per mode.