zap

go.uber.org/zap

Structured logging with typed fields and configurable outputs

Reviewed 2026-09-30 · Package source

Recorded facts

Metadata fetched: 2026-09-30T18:11:16.447Z · Freshness: current. This is a dated snapshot; check the linked sources before adopting a package.

Version: v1.28.0
Minimum Go version: 1.19
Licenses: MIT
Import path: go.uber.org/zap
Capabilities: structured-logging, json
Dependencies recorded: 8

Vulnerability evidence

Status: checked. Checked: 2026-09-30T18:11:16.447Z.

No advisories reported by this check.

Version advisories do not establish whether a vulnerability is reachable in your application.

Vulnerability source

Tradeoffs

Introduces logger and field types specific to this dependency.

Install and import

go get go.uber.org/[email protected]

import "go.uber.org/zap"

Authored example

Verification status: passed · Checked: 2026-09-30T18:16:19.070Z

Package version: v1.28.0 · Go toolchain: go1.27.1

Targets: linux/amd64, windows/amd64 · CGO: disabled

Compilation checks only this displayed example. It does not verify runtime behavior, all package features or vulnerability reachability.

package main

import "go.uber.org/zap"

func main() {
    logger := zap.NewExample()
    logger.Info("application started", zap.String("service", "example"))
}

Compile verification covers this example only. It does not test runtime behavior or every optional feature.

Reproduce the compilation with pinned dependencies

Save the example as main.go alongside these files in a new directory. Use the recorded Go toolchain and CGO_ENABLED=0 to compile for a recorded target.

go.mod

module example.com/discovery/zap

go 1.27.1

require go.uber.org/zap v1.28.0

require go.uber.org/multierr v1.10.0 // indirect

go.sum

github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
go.uber.org/multierr v1.10.0 h1:S0h4aNzvfcFsC3dRF1jLoaov7oRaKqRGC/pUEJ2yvPQ=
go.uber.org/multierr v1.10.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
go.uber.org/zap v1.28.0 h1:IZzaP1Fv73/T/pBMLk4VutPl36uNC+OSUh3JLG3FIjo=
go.uber.org/zap v1.28.0/go.mod h1:rDLpOi171uODNm/mxFcuYWxDsqWSAVkFdX4XojSKg/Q=
go.yaml.in/yaml/v3 v3.0.4 h1:tfq32ie2Jv2UxXFdLJdh3jXuOzWiL1fo0bu/FbuKpbc=
go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

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