| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/prometheus/client_golang/prometheus | Package prometheus is the core instrumentation package. |
| github.com/prometheus/client_golang/prometheus/promauto | Package promauto provides alternative constructors for the fundamental Prometheus metric types and their …Vec and …Func variants. |
| github.com/prometheus/client_golang/prometheus/promhttp | Package promhttp provides tooling around HTTP servers and clients. |
| net/http | Package http provides HTTP client and server implementations. |