// Shopify API Rate Limiting Strategy
                const rateLimiter = {
                  maxRequests: 40,
                  perSecond: 2,
                  bucketSize: 40,
                  refillRate: 2,
                  
                  async executeWithRetry(fn) {
                    const delay = this.calculateDelay();
                    if (delay > 0) await sleep(delay);
                    
                    try {
                      return await fn();
                    } catch (error) {
                      if (error.status === 429) {
                        await this.handleRateLimit(error);
                        return this.executeWithRetry(fn);
                      }
                      throw error;
                    }
                  }
                };