The _a/_b partitions are an implementation of a system called “Project Treble”, which was expected to help phone manufacturers deliver updates to their phones faster.
Renovate has had minimumReleaseAge (originally called stabilityDays) for years, long before the rest of the ecosystem caught on, adding a “pending” status check to update branches until the configured time has passed. Mend Renovate 42 went a step further and made a 3-day minimum release age the default for npm packages in their “best practices” config via the security:minimumReleaseAgeNpm preset, making cooldowns opt-out rather than opt-in for their users. Dependabot shipped cooldowns in July 2025 with a cooldown block in dependabot.yml supporting default-days and per-semver-level overrides (semver-major-days, semver-minor-days, semver-patch-days), with security updates bypassing the cooldown. Snyk takes the most aggressive stance with a built-in non-configurable 21-day cooldown on automatic upgrade PRs. npm-check-updates added a --cooldown parameter that accepts duration suffixes like 7d or 12h.
，这一点在谷歌浏览器【最新下载地址】中也有详细论述
Mar 5, 2026 12:00 PM
Американскому сенатору стало «страшнее, чем когда либо» после брифинга по Ирану02:37
return opt.Unknown()