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When a JetStream pull consumer’s AckPending climbs and messages keep redelivering, the culprit is often AckWait, MaxAckPending, or missing acknowledgments. This guide walks you through spotting the pattern, diagnosing the root cause, and applying targeted fixes to restore smooth delivery.
A step‑by‑step diagnostic guide to pinpoint and fix Apache Pulsar consumer acknowledgment issues—covering auto‑ack, manual ack, ack timeouts, batch ack, and subscription type interactions.
Goal Configure Socket.IO so that alerts are sent only to clients in a specific room, use the volatile flag to skip delivery when a client is not ready, and attach an acknowledgment callback with a timeout to detect missed deliveries and avoid repeated noisy notifications. Constraints and Uncertainty The acknowledgment timeout must be long enough to accommoda
nats
pulsar
socketio