Revisionslogger

Revisionslogger is a software component designed to capture and persist every change made to a set of items over time. It functions as an immutable audit log that records who changed what, when, and how, enabling reconstruction of any previous state and analysis of edit history. The core idea aligns with event sourcing and is often used in content management systems, collaborative editors, and data governance platforms.

A typical implementation stores entries with fields such as revision_id, item_id, timestamp, user_id, change_type, summary, and a diff or patch. Revisions can be stored in a relational database, a document store, or a specialized log backend. The system provides APIs to append revisions, fetch the history for an item, query by time range, and reconstruct the item at any given revision. It may also support exporting revisions as patches or JSON representations and reconstructing full item state by applying changes in sequence.

Revisionslogger can adopt an event-sourcing architecture, where the source of truth is the sequence of events rather than the current state. It can be integrated as a library within applications or exposed as a standalone service with access control, versioned schemas, and retention policies. Common concerns include handling large diffs, privacy of author information, and ensuring idempotent writes in distributed deployments.

Typical use cases include auditing edits in content management systems, tracking changes to configurations or datasets, supporting rollback and recovery, and meeting regulatory requirements that require change history. The tool is often designed to be pluggable and framework-agnostic to fit various storage backends and programming environments.

Related concepts include version control, audit trails, and event sourcing.