Thanks for the reply delano, actually it is possible to build both features in the RDB -> JSON dump (filter by key pattern, type, single DB, and so forth). But

Thanks for the reply delano, actually it is possible to build both features in the RDB -> JSON dump (filter by key pattern, type, single DB, and so forth). But that would be much faster. Your approach is also interesting but IMHO the main limit is that with the current Redis API there is no robust way to iterate keys in a good way if the key space is very big, without blocking the server and using a lot of additional memory, and it is also not possible to easily get big sets in ranges. Also what happens if somebody is writing to the DB while you need the dump? It is no longer point-in-time. Btw since this is an interesting feature to have I'm adding a feature request in the github issues for a redis-cli feature able to do this work. EDIT: feature request added -> https://github.com/antirez/redis/issues/288 https://github.com/antirez/redis/issues/288