Patchluku

Patchluku is a Finnish term used primarily in information technology to refer to the count or list of patches associated with a system, release, or project. The word combines patch, borrowed from English, with luku, meaning "number" or "count." There is no single, universally defined standard for patchluku; its exact meaning varies by context and organization.

In patch management, patchluku typically denotes the number of patches that have been identified for remediation in a given scope, such as a particular asset, subsystem, or software product. It may be split into applied patches, patches in testing, and patches not yet addressed. Organizations use the metric to monitor progress, plan resource allocation, and assess remaining risk. Some practices tie patchluku to severity or CVSS scores to prioritize actions.

In software development and change management, patchluku can describe the number of patch changes in a patch series or pull request set. In these contexts, the term helps teams gauge size, review effort, and delivery velocity. The metric is often reported alongside other indicators such as build status and test coverage.

Example: a Linux distribution tracks a patchluku of 24 security fixes for a minor release, of which 16 have been applied on production systems. The remaining eight are staged for testing or scheduled deployment. Patchluku data is typically stored in asset management or vulnerability management inventories and integrated into dashboards for IT governance.

See also: patch management, vulnerability management, software patch, change request, software bill of materials.