new Pool/new Client inside handler body (not singleton)

What it is

A new Pool() or new Client() is constructed inside the request handler rather than once at module scope.

Why it matters

A pool created per request cannot pool anything — it opens connections, serves one request, and is discarded. Under load the instance holds many short-lived pools at once and exhausts the limit.

How to fix it

Create the pool once at module scope so it is reused across invocations on a warm instance. In development, cache it on globalThis so hot reload does not accumulate pools.