IGListKit
A data-driven UICollectionView framework for building fast lists
... to this range. This concept lets your section controllers prepare content before they come on screen (e.g. download images). With the IGListDiffable plugin for remodel by facebook, you can automatically generate models conforming to the IGListDiffable. Remember that IGListKit functions on one model per section controller. You want to create a Post model that contains all of the information that the cells require.