embed.FS.ReadFile
standard libraryThe 2244th most-called standard-library method by production calls. Called 440 times across 120 modules; 275 of those run outside tests and generated code.
1% in production calls vs 2026-W37 (272 → 275)
- prod calls
- 275
- non-test, non-generated
- all calls
- 440
- total callsites
- modules
- 120
- distinct callers
- in loop
- 26%
- of prod calls
- in tests
- 36%
- 158 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 method99%A method on a value whose type is known exactly.
- Embedded method<1%Reached through an embedded type.
- Method value<1%A method captured as a value, then called.
who calls this
Notable callers
Production calls into FS.ReadFile from notable Go projects. Open one on the map to see what else it hammers.
- Kubernetes 14 5%
- Authelia 8 3%
- Argo 7 3%
- HashiCorp 5 2%
- Istio 5 2%
where it's called
Callsites in the wild
12 representative callsites of 440, prioritizing in-loop and non-test usage. We link to source, never display it.
- in loop
- in loop
-
cilium/cilium @v1.20.2
in loop - in loop
- in loop
- in loop
- in loop
- in loop
- in loop
- in loop
- in loop
- in loop
top callers
The modules that reach for it
The modules that call FS.ReadFile most in this snapshot.
- github.com/gastownhall/gastown286%
- github.com/steveyegge/gastown286%
- github.com/gastownhall/beads256%
- github.com/steveyegge/beads256%
- github.com/alibaba/open-code-review174%