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expvar.Map.Set

standard library

The 2892nd most-called standard-library method by production calls. Called 240 times across 18 modules; 213 of those run outside tests and generated code.

No change in production calls since 2026-W39.

All of expvar → Docs on pkg.go.dev ↗

prod calls
213
non-test, non-generated
all calls
240
total callsites
modules
18
distinct callers
in loop
4%
of prod calls
in tests
11%
27 calls
resolved
100%
to a known target

resolution mix

How each call resolves

How each call was attributed. Only resolved kinds, where the target function is known, count toward the ranking. Interface dispatch and unresolved receivers are reported separately and never guessed. Read the taxonomy →

  • Concrete method34%A method on a value whose type is known exactly.
  • Embedded method66%Reached through an embedded type.

who calls this

Notable callers

Production calls into Map.Set from notable Go projects. Open one on the map to see what else it hammers.

where it's called

Callsites in the wild

12 representative callsites of 240, prioritizing in-loop and non-test usage. We link to source, never display it.

Map.Set · 12 of 240 callsites

top callers

The modules that reach for it

The modules that call Map.Set most in this snapshot.

  • tailscale.com8937%
  • github.com/sagernet/tailscale7632%
  • github.com/distribution/distribution94%
  • github.com/docker/distribution94%
  • github.com/cilium/statedb83%

siblings

More from expvar

The other most-called members in this package. See all →