Making sense of application logs and metrics has been an interesting challenge at Tailwind Traders - how do we know what we're looking for? Do we look at logs? Metrics? Both? Using a service such as Azure's Application Insights has helped Tailwind Traders elevate our application logs to something a bit more powerful: Telemetry. Telemetry isn't just about catching errors and logging events. It's about detecting anomalies in otherwise normal behaviors.
In this talk we'll wire up Azure's Application Insights to the Tailwind Traders public-facing website and see how we can fix a slow-loading home page. We'll then see how we can expand this concept of telemetry into understanding why our bill for Cosmos DB is higher than we expect.