Complex sentence: The technique is used to retain allocated memory that contains a data object of a certain type for reuse upon subsequent allocations of objects of the same type; it is analogous to an object pool, but only applies to memory, not other resources.
Split into simpler sentences: The technique is used to retain allocated memory that contains a data object of a certain type for reuse upon subsequent allocations of objects of the same type. It is analogous to an object pool, but only applies to memory, not other resources.