Hi guys, A product I'm currently developing has a rather big (in many ways) problem. A product instance may store many, (thousands) of big objects, ranging from 1-50 MB in size. Now, whenever the product instance is accessed, with say for example 100 objects with a size of 2MB each, Zope slows down to a crawl, and spends a lot of time loading (I assume) the objects from the ZODB, even though only 10 objects are actually accessed. ..I can't really use any external storages, as the reason for bringing these objects into the ZODB was to structure them and make then indexable by ZCatalog. And there's probably no time for ZPatterns. Someone suggested using BTreeFolder, but the documentation and examples for it are rather scarce. Does anyone know of products that make a good example use of BTreeFolder? Would BTreeFolder work for this? Are there better alternatives? Thank you for your time, Morten