With a Java lambda expression, the object type isn’t required ... It is a very simple component that simply requires the implementation of one method — named apply — that is passed in a single object, ...

The implementation of Java 8 Lambda expressions required an introduction to a ... that the component extends the Function interface and defines a single method named apply.

Regardless of whether or not we are using lambda expressions, we use the Java interface shown in Listing 3 in place of the C++ typedef to specify the signature of the function parameter.

AWS Lambda SnapStart cuts Java startup times by initializing Java functions ahead of time and caching a snapshot of the initialized execution environment. AWS has unveiled AWS Lambda SnapStart for ...