GA4 API Quotas and Limits

import { BetaAnalyticsDataClient } from "@google-analytics/data";

const analyticsDataClient = new BetaAnalyticsDataClient();

async function runReportWithBackoff(propertyId: string, maxRetries = 5) {
  let attempt = 0;
  while (attempt < maxRetries) {
    try {
      const [response] = await analyticsDataClient.runReport({
        property: `properties/${propertyId}`,
        dateRanges: [{ startDate: "30daysAgo", endDate: "today" }],
        dimensions: [{ name: "sessionSourceMedium" }],
        metrics: [{ name: "sessions" }, { name: "conversions" }],
      });
      return response;
    } catch (err: any) {
      if (err.code === 8 /* RESOURCE_EXHAUSTED */ && attempt < maxRetries - 1) {
        const delayMs = 2 ** attempt * 1000; // exponential backoff
        await new Promise((r) => setTimeout(r, delayMs));
        attempt++;
        continue;
      }
      throw err;
    }
  }
}