how do I improve my server app with tracing

To improve your server app with tracing, you can utilize the Swift on Server ecosystem, which provides tools for observability, including logging, metrics, and distributed tracing. Here's a brief overview of how you can implement tracing:

1. Structured Logging: Use Swiftlog to emit logs with metadata, which helps in understanding what a service did and provides context for troubleshooting.

2. Metrics: Implement counters using Swiftmetrics to track the number of requests processed by your service. This gives a high-level overview of your service's health.

3. Distributed Tracing: Add Swift distributed tracing to create spans around critical operations like database queries. This helps in tracing the path of a request through your system, which is particularly useful in distributed systems.

The APIs for these observability tools are backend agnostic, allowing you to choose where to send the data. You can bootstrap these systems in your application, starting with logging, followed by metrics, and then instrumentation.

For more detailed guidance, you can refer to the session Explore the Swift on Server ecosystem (10:53) from WWDC 2024, which covers observability in the Swift on Server ecosystem.