Our Laravel export workers started at 70 MB and reached 1 GB after six hours, getting slower until Kubernetes killed them mid-job. An always-on query log, a static memo cache and whole-table loads were to blame. We fixed each and added worker limits.
Our Flutter app gained about 9 MB of Dart heap every time a user opened and closed the order details screen, until older Android phones killed it. DevTools showed dozens of retained State objects held alive by a stream subscription and an AnimationController that were never disposed.
Our price streaming API grew from 180 MB to 1.4 GB of heap in a day and was restarted by the orchestrator every night. A listener was attached to a shared EventEmitter on every request and never removed. Heap snapshots proved it; removing listeners on close fixed it.