How Can Go 1.10 Speed Up Builds and Eliminate Unnecessary Rebuilds with CGO?

Unnecessary Rebuilds with go build

Programmers working with small programs that involve CGO invocations often encounter excessive build times with go build and go run. This time-consuming process discourages caching binaries and leveraging source modification timestamps for incremental builds.

An alternative approach is the implementation of a cache that maintains built packages and metadata. This solution offers incremental builds and faster execution, eliminating the need for user intervention with commands like go test -i or go build -i.

Go 1.10, slated for release in Q1 2018, incorporates this caching functionality, ensuring that go build and go install become significantly faster. The cache directory is configurable via the $GOCACHE environment variable, and cached data can be cleared using go clean -cache without affecting the cache's log file.

By caching build products, the Go community hopes to simplify developer workflows, reducing build times and streamlining the development process. This cache-based approach is expected to be embraced as the preferred solution for caching and reusing build outputs.

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