net/http.Flusher.Flush
standard libraryThe 1303rd most-called standard-library method by production calls. Called 962 times across 182 modules; 494 of those run outside tests and generated code.
5% in production calls vs 2026-W39 (471 → 494)
- prod calls
- 494
- non-test, non-generated
- all calls
- 962
- total callsites
- modules
- 182
- distinct callers
- in loop
- 28%
- of prod calls
- in tests
- 47%
- 451 calls
- resolved
- 1%
- 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 →
- Interface method99%Called through an interface. The runtime target may differ.
- Method value<1%A method captured as a value, then called.
who calls this
Notable callers
Production calls into Flusher.Flush from notable Go projects. Open one on the map to see what else it hammers.
- Traefik 21 4%
- Kubernetes 17 3%
- Tailscale 14 3%
- Istio 8 2%
- gRPC 6 1%
where it's called
Callsites in the wild
12 representative callsites of 962, 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 - in loop
-
etcd-io/etcd @v2.3.8+incompatible
in loop -
gitea.dev @v1.27.3
routers/web/events/events.go:81
in loop - in loop
- in loop
- in loop
- in loop
- in loop
-
air-verse/air @v1.67.4
in loop
top callers
The modules that reach for it
The modules that call Flusher.Flush most in this snapshot.
- github.com/infiniflow/ragflow374%
- github.com/mark3labs/mcp-go364%
- golang.org/x/net323%
- github.com/traefik/traefik/v3273%
- github.com/kubernetes/kubernetes263%
siblings
More from net/http
The other most-called members in this package. See all →