1. A method for use in a database cluster, wherein the database cluster comprises a plurality of nodes, the method comprising: receiving a first transaction at a first node of the database cluster; generating a page pre-fetch request corresponding to the first transaction whilst executing the first transaction at the first node, wherein the page pre-fetch request is indicative of at least one database page that is referenced by the first transaction; adding the page pre-fetch request to a replication write-set of a second transaction at the first node; and communicating the replication write-set of the second transaction, along with the page pre-fetch request, to a second node of the database cluster.