Thursday, December 29, 2011

Friday, December 16, 2011

Linking profile to Google+

I've linked my Blogger profile to my Google+ account. Please comment if you have any thoughts on this, or if you see anything odd or missing as a result. Thanks!

Java server hiccups

Gil Tene at Azul has great insight into Java server performance gaffs. He calls them hiccups and provides tooling to find them.

Thursday, December 15, 2011

Monad in Java

The shortest, clearest description of monads in Java I have read:

public class OptionalMonad {
    public static <T> Optional<T> unit(T value) {
        return Optional.of(value);

    public static <T, U> Optional<U> bind(
            Optional<T> value,
            Function<T, Optional<U>> function) {
        if (value.isPresent()) return function.apply(value.get());
        else return Optional.absent();

Thanks to Fran├žois Sarradin in a very nice post.

Friday, December 09, 2011

Netflix circuit breaker

Ben Schmaus of the Netflix team posts a lovely description of the degraded service features of their API. The real life use case is compelling. The dashboard is just brilliant.