memory-leak.txt
My <app / page / worker> uses more memory the longer it runs, and a
restart fixes it. Stack: <stack>.

Here's the relevant code: <paste>

Look for the usual causes:
- Event listeners added and never removed.
- Timers and intervals never cleared.
- Things pushed into an array or map that's never pruned.
- Closures holding references to large objects.
- Connections, streams or file handles opened without being closed.
- Caches with no eviction.

For each candidate: how it leaks, and how I'd confirm it with a
heap snapshot or a simple counter.

An unbounded cache is the most common one and the least likely to look like a bug. It reads as an optimisation right up to the point the process dies.