segments-and-spans.md

Segments and spans

Segments and spans (when distributed tracing is enabled) are captured for Next.js middleware and getServerSideProps(Server-Side Rendering).

Next.js middleware segments/spans

Next.js middleware was made stable in 12.2.0. As of v0.2.0 of @newrelic/next, it will only instrument Next.js middleware in versions greater than or equal to 12.2.0.

/Nodejs/Middleware/Nextjs//middleware

Since middleware executes for every request you will see the same span for every request if middleware is present even if you aren't executing any business logic for a given route. If you have middleware in a deeply nested application, segments and spans will be created for every unique middleware.

Server-side rendering segments/spans

/Nodejs/Nextjs/getServerSideProps/<Next.js page name>

Next.js pages that contain server-side rendering must export a function called getServerSideProps. The function execution will be captured and an additional attribute will be added for the name of the page.

Attributes

Name	Description
next.page	Name of the page, including dynamic route where applicable