The Complete Rust Programming Reference Guide

Log replay

Typically in databases, transaction logs are a resilience measure if something bad happens that the database must be restored—or to keep a replica up to date. The principle is fairly simple: the log represents a timeline of commands that have been executed in this exact order. Thus, to recreate that final state of a database, it is necessary to start with the oldest entry and apply every transaction that follows in that very order.

You may have caught how that fits the capabilities of a linked list nicely. So, what is missing from the current implementation?

The ability to remove elements starting at the front.

Since the entire data structure resembles a queue, this function is going to be called pop, as it's the typical name for ...