Function cleanup

src/middleware.ts:52–61

()

const CLEANUP_INTERVAL = 5 * 60_000;

function cleanup() {
  const now = Date.now();
  if (now - lastCleanup < CLEANUP_INTERVAL) return;
  lastCleanup = now;
  for (const map of Object.values(rateMaps)) {
    for (const [key, bucket] of map) {
      if (now >= bucket.resetAt) map.delete(key);
    }
  }
}

function getTier(pathname: string): keyof typeof rateMaps {
  if (pathname === "/api/summarize") return "ai";