Node.js Queue Design: Storing Alerts Durably So Offline Users Still Get Notified

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The article argues that in a Node.js app, notifications should be queued as durable application state before any live delivery is attempted. Live connections are treated as an optimization, since a user's socket may be absent when an event occurs. Presence data is meant to expire, while a notification should persist until delivery or acknowledgement is recorded. The author highlights failure cases such as restarts or timeouts between acceptance and confirmation, which can cause lost or duplicate alerts. The recommended defense is at-least-once processing paired with an idempotent consumer keyed by a stable notification ID.

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Calibration-free top-k selector speeds MoE decoding without threshold tuning

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ProgrammingDEV Community ·

Two Models for AI-Powered BI: Dashboards with Agents vs. Agent-First Design

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ProgrammingDEV Community ·

Support FAQ bot invented 22 answers until grounding cut that to zero

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ProgrammingDEV Community ·

Confluence Cloud Adds Native Page Approvals, With Limits on Multi-Approver Rules

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