PodRocket - A web development podcast from LogRocket
Debugging apps with Deno and OpenTelemetry with Luca Casonato
Mar 27, 2025
Luca Casanato, a member of the Deno core team, shares his expertise on debugging applications with Deno and OpenTelemetry. He reveals how OpenTelemetry elevates application monitoring through metrics, logs, and traces. The conversation uncovers the streamlined instrumentation of Deno compared to Node.js, emphasizing its built-in telemetry features. Luca also discusses the complexities of debugging while providing valuable tips for developers to simplify their code and enhance performance monitoring. Plenty of insights for anyone diving into modern app development!
24:55
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Quick takeaways
- Deno's integration with OpenTelemetry streamlines application monitoring, enabling easier identification of performance bottlenecks without additional SDK installations.
- Understanding performance metrics through OpenTelemetry's pillars—metrics, logs, and traces—empowers developers to improve application efficiency based on actual data rather than benchmarks.
Deep dives
Performance Insights of Auto-Instrumented Applications
Many developers are often surprised by the slower performance of various frameworks when they analyze auto-instrumented applications. Despite regular benchmarks being released, the actual performance metrics of an application greatly depend on how it is structured and the databases it utilizes. This insight underscores the value of understanding one's own application's data rather than solely relying on reported benchmarks. By having visibility into specific slow endpoints, developers can effectively identify performance bottlenecks and take targeted actions to improve efficiency.
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