This script checks the version of a JSON response from a gist raw API endpoint every 500 milliseconds to find out the update efficency

gist-raw-content-updatelatency.js

/**
 * This script checks the version of a JSON response from a gist raw API endpoint every 500 milliseconds to find out the update efficency.
 * Run this exactly update clicking update JSON, check my test.json jist. Clone it and modify the version.
 * If the version is X, it logs the data. If the version is not X, it logs the current time, the version, 
 * and the time difference between the request initiation and the response reception. 
 * The script also ensures that the API response is not cached by appending a unique timestamp 
 * to each request URL and setting cache control options.
 */

let intervalId;
let a = new Date();
const checkVersion = async () => {
  
  try {
    // Append the current timestamp to the URL to prevent caching
    const response = await fetch(`https://gist.githubusercontent.com/astrarudra/c9a7783d2a4a334a192235d762a27c0d/raw?timestamp=${(new Date()).getTime()}`, {
      cache: "no-store" // Also try to prevent cache on fetch request
    });
    const data = await response.json();
    
    if (data.version === 12) {
      console.log(data);
    } else {
      const b = new Date();
      const timeDifference = b - a;
      console.log(b, data.version, `Time Difference: ${timeDifference}ms`);
      
      // Clear the interval to stop the repeated execution
      clearInterval(intervalId);
    }
  } catch (error) {
    console.error('Error fetching the data:', error);
  }
};

// Ping the URL every second (1000 ms)
intervalId = setInterval(checkVersion, 500);

/* 
  From my testing - Run around 5 times 
  The latency varied from 20s to 50s. So <1min
*/