Hi community,
We will support Java 8 since Dubbo 2.7 according to Huxing’s comments here
[1], one big improvement of Java 8 is `Optional`, which is introduced primarily
to avoid `null` and `NullPointerException`.
`Optional` will make programs more readable and less bug prone, and some
projects such as Apache Pulsar do use `Optional` a lot. However heavy use of
`Optional` may produce many small objects and hence introduce some performance
costs, my question is should we encourage `Optional` in Dubbo?
Looking forward to hearing from you.
[1]
https://github.com/apache/incubator-dubbo/issues/3186#issuecomment-454236757
<https://github.com/apache/incubator-dubbo/issues/3186#issuecomment-454236757>
