What is Immutable Logging?

Immutable logging is a technique for storing log data in a way that ensures it cannot be changed or deleted. This can be useful in a number of situations, such as when it is important to have an unaltered record of events for auditing or compliance purposes, or when it is necessary to maintain a permanent record of activity for forensic analysis.

There are several ways to implement immutable logging, but one common approach is to use a database or file system that does not allow for updates or deletions. This can be achieved through the use of append-only data structures, such as a append-only log file or an append-only database. Alternatively, immutable logging can be implemented using cryptographic techniques, such as hashing or digital signing, to ensure that log data cannot be altered without detection.

Regardless of the specific implementation, the goal of immutable logging is to create a tamper-evident record of events that can be relied upon for purposes such as auditing, compliance, and forensic analysis.