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Redis keyspace notifications are popular for lightweight pub sub tasks. Using them for durable queues introduces hidden CPU spikes and message loss under high load.
October 24, 2026
ArticleNode.js MessageChannel instances keep the event loop active even when no messages are queued. Learn why unclosed MessagePorts prevent Node.js processes from exiting cleanly and how to unref or close them.
October 23, 2026
ArticleRow level security policies in PostgreSQL often cause severe query plan degradation when joining secured tables. Learn why the planner fails to inline security functions and how to restore index scans.
October 22, 2026
ArticleMongoose discriminators make schema inheritance easy until missing keys return parent model instances. Here is how to enforce validation.
October 21, 2026
ArticleNode.js applications running in Kubernetes often suffer sudden p99 latency spikes despite showing low average CPU usage. This issue stems from Linux CFS quota enforcement throttling the process mid-burst.
October 20, 2026
ArticleWhen using native fetch in Node.js, failing to consume or cancel unneeded response bodies prevents garbage collection. Learn why undici keeps underlying buffer streams in memory and how to properly drain response streams.
October 19, 2026
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