A deep-dive into five production stream leak patterns in Node.js that survive correct backpressure handling: client disconnection not detected by legacy `.pipe()`, manual listener teardown pitfalls, timeouts that only close the response without destroying upstream, tying database connection lifecycle to network speed, and race conditions during pipeline teardown. The post then presents a five-rule playbook: always use `pipeline()` over `.pipe()`, respect the `.write()` boolean with a bulletproof drain/error race using AbortController, destroy every stream you create, profile with a constrained heap before production, and write unit tests that verify backpressure compliance. It closes with a look at async generators and `stream.compose()` as the future direction for leak-free, pull-based streaming pipelines.
Table of contents
The Five Ways Your Streams Are Leaking Right NowThe Modern Playbook: How to Stream Without LeakingThe Fix is Simple, The System is NotSort: