io/ioutil.ReadFile
standard libraryThe 589th most-called standard-library function by production calls. Called 2,528 times across 361 modules; 1,270 of those run outside tests and generated code.
- prod calls
- 1,270
- non-test, non-generated
- all calls
- 2,528
- total callsites
- modules
- 361
- distinct callers
- in loop
- 12%
- of prod calls
- in tests
- 50%
- 1,254 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 →
- Package function100%A direct call to an exported package function, resolved by type.
who calls this
Notable callers
Production calls into ReadFile from notable Go projects. Open one on the map to see what else it hammers.
- CockroachDB 50 4%
- Argo 44 3%
- Kubernetes 30 2%
- Vault 21 2%
- Terraform 20 2%
where it's called
Callsites in the wild
12 representative callsites of 2,528, prioritizing in-loop and non-test usage. We link to source, never display it.
- in loop
- in loop
-
cockroachdb/cockroach @v19.2.12+incompatible
in loop -
docker/distribution @v2.8.3+incompatible
in loop -
etcd-io/etcd @v2.3.8+incompatible
in loop - in loop
-
Binject/debug @v0.0.0-20260128230015-4e22595eaac6
in loop - in loop
-
IBM-Cloud/bluemix-go @v0.0.0-20260624064701-576d2f801297
in loop - in loop
-
TykTechnologies/tyk @v1.9.1
in loop -
aquasecurity/bolt-fixtures @v0.0.0-20200903104109-d34e7f983986
in loop
top callers
The modules that reach for it
The modules that call ReadFile most in this snapshot.
- github.com/hyperledger/fabric2148%
- github.com/elastic/beats1004%
- github.com/cockroachdb/cockroach843%
- github.com/argoproj/argo-cd703%
- github.com/GoogleContainerTools/skaffold663%
siblings
More from io/ioutil
The other most-called functions in this package. See all →