versionId
VersionId is a label assigned to a specific version of a resource, document, or artifact in computing systems. It serves to distinguish successive revisions, enabling history tracking, data integrity, and coordination across clients and services. The resource’s core identity often remains the same while the versionId changes with each update. In APIs and data stores, versionId can be used to implement optimistic concurrency control: a client sends the versionId it retrieved, and an update proceeds only if the current version matches, preventing lost updates.
Formats for versionId vary. They may be simple numeric counters, semantic version strings (for example, 2.1.0),
In practical use, versionId supports features such as historical queries, rollback, synchronization, and cache invalidation. It