I'm looking for an STL-like library that would let me do something like the following: tp::database data; tp::map<int, string> map1(data); tp::list<float> list1(data); ... tp::transaction t; map1.start_transaction(t); list1.start_transaction(t); map1[5] = "hello"; // does NOT commit to container or database list1.push_back(1.0); // does NOT commit either t.commit(); // Finally commits to container and database. // Without this call, t would call rollback // in destructor. Does anyone know of such a library ? If not, I guess I'll have to do some writing. If I do write it, it seems that using boost serialization would save a lot of the work. But I've looked at it and it seems to be missing a couple things I need. For one, it seems to require that you serialize the entire container each time you change one element. Perhaps I'm wrong ? The other problem is that I don't see anything related to transactions within the library. This may even prevent me from using the library to implement the actual serialization of each element, as I wouldn't be able to gurantee that the data was NOT written. Unless one can hook up transactional archives to boost serialization ? Any advice or pointers would be greatly appreciated.