Batching external call to external service in cloudflare worker

I am working on a small worker that logs to an external service (Kinesis firehose) and then does a redirect

I am trying to batch the external calls together to avoid hitting ingestion limits. Is this the correct way to do it or is there a better way? (p.s i looked at using queues but the cost would be high for what we need)

It seems to work locally but not when deployed

Thank you

Josh

import { createUrl, getFinalUrl, getUserId, isValidUrl } from "./lib/url";
import { sendToFirehose } from "./lib/sendToFirehose";

export interface Env {
  AWS_ACCESS_KEY_ID: string;
  AWS_SECRET_ACCESS_KEY: string;
}

let batch: Record<any, any>[] = [];
export default {
  async fetch(request: Request, env: Env): Promise<Response> {
    const { pathname, searchParams } = new URL(request.url);
    ////
    
    const data = {
      date: new Date(),
      url: request.url,  
    };

    batch.push(data);

    if (batch.length === 100) {
      console.log("Batch size reached, sending to firehose");
      await sendToFirehose(batch);
      batch = [];
    }

    return Response.redirect("http://newurl.com", 302);
  },
};

it seems the best way to do it is using cloudflare queue feature