4.4 Moving Ahead

In this chapter, we learned the following:

• There are two different ways to exchange objects across processes, passing by reference and passing by value.

• dRuby chooses which way to pass by checking whether an object can be serialized by Marshal.dump.

• You can change the default exchange method by using DRbUndumped.

• If a process receives unknown objects, DRbUnknown will let you save and transfer these unknown objects.

In the next chapter, you’ll find out about multithreading in Ruby and see how dRuby makes use of it.