Modern applications rarely live in isolation; they rely on fresh data from the outside world. You likely have a specific script—a cron job or a background worker—that wakes up on a schedule to fetch currency rates, scrape a webpage, or query a weather API.
But these external dependencies are unpredictable. If an API key expires, a rate limit is hit, or the target website changes its layout, your script will crash. We monitor the script itself. If your worker doesn’t finish the job and check in with us, we let you know immediately.
Monitoring the Fetcher Script
It is important to understand what we are monitoring here. We aren’t just pinging the API to see if it’s up; we are monitoring the execution of your code.
Let’s say you have a Python script that runs every minute to fetch stock prices. If the external API hangs and your script times out, or if your server loses internet connectivity, the script will fail to complete. Because it never reaches the line of code that sends the “success ping” to olic.io, we mark the job as “Missing” and alert you.
This distinguishes “Pulling Data” from Importing Data. While imports are often massive bulk syncs, pulling data is usually about frequent, lightweight fetches that your application needs right now.
When Scrapers Fail Silently
Indie Hackers and developers often build tools that rely on web scraping. This is an incredibly fragile way to pull data.
If you are scraping a partner’s site and they decide to rename a CSS class or add a CAPTCHA, your script might not “crash”—it might just return an empty result or a 403 error.
By monitoring the script’s execution, you catch these issues. You can write your code to handle these exceptions and stop the “success ping” if the scrape doesn’t go as planned.
Validating the Payload
Just because the HTTP request returned a “200 OK” doesn’t mean you got the data you wanted. APIs often return success codes even when they send back error messages in the body (like “Quota Exceeded”).
To make your monitoring bulletproof, you should validate the payload before you ping us.
- Bad: Fetch data -> Ping olic.io.
- Good: Fetch data -> Check if
price > 0-> Save to DB -> Ping olic.io.
This ensures you are only notified when you actually have valid data in your system.
Frequently Asked Questions
Can I monitor if my IP got banned? Yes. If your script attempts to fetch data and gets blocked (e.g., a 403 Forbidden error), your script should throw an error or exit. Since it exits before sending the success ping, we will alert you that the job failed.
How often can I check? We support high-frequency monitoring. If your script runs every minute to pull live data, we expect a ping every minute. If you miss one, we let you know.
Do you monitor the API directly? No, we monitor your script. This is better because it confirms that your server can reach the API and process the response. If the API is up but your firewall is blocking the connection, we will still catch the failure.