Java Serialization Options

Just a quick list for now - i need to come back and do a proper comparison at some point.

• Java serialization
  • With serialVersionUID (makes no difference to performance, mention only to dismiss)
  • With serialPersistentFields
    • With fields marked unshared where appropriate
  • With readObject/writeObject
  • With Externalizable
• http://www.jboss.org/serialization/
• http://jserial.sourceforge.net/
• XStream (various options)
• Some kind of ASN.1?
• JAXB
• Is there any way to get CORBA / IIOP to serialize structs?
• Purely hand-hacked
• JSON toolkits?
• Javolution XML marshalling - claims "performance on a par or better than default JavaTM Serialization/Deserialization", as well as various realtimey and exciting properties
• Action Message Format, version 3, aka AMF3; actually a format for Flash, but looks flexible enough to handle java objects. What look like implementations in Granite Data Services and Cinnamon.
• Stefan Ram's serializer (class de.dclj.ram.notation.junobjects.Junobjects).
• Avro, part of Hadoop
• Hessian (an RPC protocol, but must contain a serialisation format somewhere)

Random notes:

• A Standard Compression Scheme for Unicode - a good basis for string encoding if you don't know what script your text is likely to be in. It's roughly as efficient as any script-specific encoding, but can cover all unicode (although it chokes a bit on anything from the private use area, and handles characters off the BMP as surrogate pairs). It actually handles european text better than UTF-8 - it can fit almost all of 8859-1 in one byte per character.
• BOCU-1, like SCSU but different