I've recently enabled Application Insights for my small API project to monitor errors and performance. Initially, I thought it would only cost around £500 (about $6) a month, but to my surprise, my Azure bill hit £2,200 ($27) for telemetry this month! This feels excessive, especially considering that my lightweight API only handles about 50,000 requests a day across a couple of endpoints. I believed the first 5 GB/month was free, so I'm puzzled about what went wrong. How can I regain control over these costs without losing visibility into my application's performance?
5 Answers
Just wait until you discover the reserved costs for log ingestion! If cost is a big concern, consider automatically moving older data to the archive tier. Depending on your needs, you might find that you don’t actually need extensive logging at all, and that can noticeably cut costs.
Make sure to dive into the SDK and implement sampling. It can be a bit tricky, but it’s essential for managing costs effectively.
Consider skipping logs that you won't actually use. For example, if something succeeds, maybe don’t log it since it’s not providing valuable insights.
I always monitor my settings daily after turning something on. Azure can be surprisingly expensive, and a lot of their pricing structures seem designed to catch you off guard. Just keep an eye on your usage.
You should definitely check out the settings under usage and estimated costs. Enabling sampling and setting daily data caps for your App Insights resource can make a big difference. Also, look closely at the types of telemetry data your API is emitting; you might find some that you can safely discard. Adding some processing code to filter what's sent to App Insights can also help.
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