Announcing upgrade to Go 1.25

[purelind]

Dear developers,

We’re planning to upgrade the Go version used in several core PingCAP repositories from Go 1.23 → Go 1.25.
This change aims to take advantage of the latest compiler improvements, performance optimizations, and security updates introduced in recent Go releases https://go.dev/doc/go1.25.

Repositories affected
• pingcap/tidb
• pingcap/ng-monitoring
• pingcap/tiflow
• pingcap/ticdc
• tikv/pd

What will change
• The default Go version used in the master branch build, CI pipelines, and developer environments will be upgraded to Go 1.25.
• Corresponding Dockerfiles and build scripts will be updated to ensure compatibility.
• We will ensure that all dependencies, linting tools, and unit/integration tests pass under Go 1.25 before merging the upgrade.

Timeline
• Preparation and testing: ongoing
• Upgrade in master branches: planned for the coming weeks (exact dates to be confirmed)
• Backports: We also plan to backport the Go 1.25 upgrade to the release-8.5 branch, but the schedule is yet to be determined.

Feedback & discussion
We welcome community feedback before we proceed with the upgrade.
Please share any concerns, compatibility notes, or suggestions in this discussion thread — especially if:
• You maintain downstream projects depending on these repositories, or
• You have custom build environments or CI pipelines using an older Go version.

Thank you for your continued support and contributions!

— The PingCAP Engineering Team