http.expvar

expvar exposes variables about the runtime or current process state in JSON format. The default endpoint is /debug/vars. By default, it reports memory statistics, the command used to run Caddy, and the number of goroutines.

This is a debugging tool. Although it is usually safe to use this on live sites, take care that you do not reveal anything sensitive. Also note that plugins may add to the list of values that are published.

For more information, please see Go’s expvar documentation.

Syntax

expvar [*path*]

• path is the endpoint at which to serve the variables. Default is /debug/vars.

Examples

Enable expvar at the default path:

expvar

Enable expvar at a custom path:

expvar /stats

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