golang.org/x/sync/singleflight.Group.Do
third-partyThe 5020th most-called third-party method by production calls. Called 130 times across 57 modules; 121 of those run outside tests and generated code.
2% in production calls vs 2026-W39 (119 → 121)
All of golang.org/x/sync/singleflight → Docs on pkg.go.dev ↗
- prod calls
- 121
- non-test, non-generated
- all calls
- 130
- total callsites
- modules
- 57
- distinct callers
- in loop
- 0%
- of prod calls
- in tests
- 7%
- 9 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 method100%A method on a value whose type is known exactly.
who calls this
Notable callers
Production calls into Group.Do from notable Go projects. Open one on the map to see what else it hammers.
- Kubernetes 12 10%
- Grafana 6 5%
- containerd 5 4%
- MinIO 3 2%
- gRPC 2 2%
where it's called
Callsites in the wild
12 representative callsites of 130, prioritizing in-loop and non-test usage. We link to source, never display it.
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x/sync @v0.23.0
singleflight/singleflight_test.go:64
in loop test -
x/sync @v0.23.0
singleflight/singleflight_test.go:138
in loop test -
x/sync @v0.23.0
singleflight/singleflight_test.go:243
in loop test -
x/sync @v0.23.0
singleflight/singleflight_test.go:278
in loop test -
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cilium/cilium @v1.20.2
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go/storage @v1.68.0
bucket_metadata_cache.go:109
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top callers
The modules that reach for it
The modules that call Group.Do most in this snapshot.
- github.com/seaweedfs/seaweedfs86%
- golang.org/x/sync86%
- github.com/sqlc-dev/sqlc75%
- github.com/GoogleContainerTools/skaffold/v265%
- github.com/kubernetes/kubernetes65%