Function checkRateLimit

apps/api/src/controllers/tools.controller.ts:98–117

(
  key: string,
  windowMs: number,
  max: number,
)

const IP_LOOKUP_MAX = 20;

function checkRateLimit(
  key: string,
  windowMs: number,
  max: number,
): boolean {
  const now = Date.now();
  const record = rateLimitMap.get(key);

  if (!record || now > record.resetAt) {
    rateLimitMap.set(key, { count: 1, resetAt: now + windowMs });
    return true;
  }

  if (record.count >= max) {
    return false;
  }

  record.count++;
  return true;
}

function detectCDN(headers: Headers): string | null {
  const server = headers.get('server')?.toLowerCase() || '';