1. A method of managing a cache including a plurality of entries said method comprising: receiving first and second cache operation requests within a single cache; in responses to receipt of said second cache operation request by said cache, identifying an entry among said plurality of entries for replacement; and in response to said first cache operation request specifying said identified entry such that a conflict exists between said first and said second cache operations, replacing an entry among said plurality of entres other than said identified entry; wherein said cache is a set-associative cache including a plurality of congruence classes that each contain a subset of said plurality entries, wherein said identified entry and said replaced entry are both within a single congruence class among said plurality of congruence classes.