You must be doing something wrong, or describing your method badly, because the vector [:a1 1] doesn't take nearly that much space in my experiments. The first object you write to a stream requires quite a bit of overhead, but after that future objects are relatively cheap. Here's an example you can try yourself:
user> (def baos (ByteArrayOutputStream.)) user> (def oos (ObjectOutputStream. baos)) user> (.writeObject oos [:a1 1]) user> (.size baos) 671 user> (.writeObject oos [:a1 1]) user> (.size baos) 719 user> (.writeObject oos [:a1 1]) user> (.size baos) 767 user> (.writeObject oos [:x 2]) user> (.size baos) 845 So the first write takes around 600 bytes of overhead, and each write of [:a1 1] takes around 40-50 bytes. Writing a new vector with two different objects takes more, because it can't reuse references to constants like :a1, but it is still just 80 bytes. Nowhere near 1KB per small vector. On Friday, August 7, 2015 at 6:31:46 AM UTC-7, icamts wrote: > > Yes. I suggested nippy. The question is about the size of Java serialized > Clojure data structures. Can a two element vector be 1kB in size? Why > serialization in my REPL experiment (see the code following the link in my > previous mail) produces a 80MB byte buffer while prevayler logs are 1GB? > > Il giorno venerdì 7 agosto 2015 13:51:45 UTC+2, Gary Verhaegen ha scritto: >> >> You should probably look at Clojure-specific solutions, starting with EDN >> (i.e. essentially pr-str), fressian, transit or nippy. >> >> Clojure data structures have a lot of properties that can be exploited >> (we only care about the abstract type and the actual data), so a serializer >> can make a lot of assumptions that a generic Java solution can't. >> >>> >>> -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
