Deno Subhosting is your way to use Deno Deploy's secure infrastructure to drive your own platform and products.

Here, Luca and Ryan talk about how Deno's platform provides integrated OpenTelemetry support and show how simply you can start exposing telemetry data from Deno Subhosting to your existing observability suite.

https://deno.com/subhosting

Deno's official blog provides updates, tutorials, and use cases for Deno, a secure JavaScript/TypeScript runtime. Developers can explore Deno's features, security model, and ecosystem integrations, gaining insights into modern JavaScript development practices. With contributions from Deno core contributors and community members, the blog offers resources for developers adopting Deno for their projects.

Deno

Deno Subhosting allows platforms to programmatically deploy and run untrusted user code at scale. A key challenge is observability across potentially hundreds of thousands of deployed apps. Deno Deploy addresses this with built-in OpenTelemetry support, automatically instrumenting console.log calls, incoming HTTP requests, and outbound fetches as traces and spans. Developers can also add custom OTel instrumentation using the standard @opentelemetry/api. To integrate with existing observability stacks, Deno Deploy supports an OTLP firehose — a configurable endpoint that streams all telemetry data to external platforms. A live demo shows configuring Honeycomb as the destination by setting the endpoint URL and an API key header in the Deno Deploy dashboard, after which traces and logs appear automatically in Honeycomb.

OpenTelemetry support in Deno Subhosting — observability at scale