Question

I just wonder if there is any caching solution available in Scala.
I’m looking for something like it is provided by Guava in Java.

Should I use Guava too in Scala?
Is there a wrapper / pimp in Scalaz or something similar?
Any alternative more appropriate for Scala devs?

What Guava provides:

LoadingCache<Key, Graph> CACHE= CacheBuilder.newBuilder()
       .maximumSize(1000)
       .expireAfterWrite(10, TimeUnit.MINUTES)
       .removalListener(MY_LISTENER)
       .build(
           new CacheLoader<Key, Graph>() {
             public Graph load(Key key) throws AnyException {
               return createExpensiveGraph(key);
             }
           });

Supplier<Animal> singleAnimalCache = Suppliers.memoizeWithExpiration(animalFromDbSupplier(), 365, TimeUnit.DAYS);

I need some basic cache management like in Guava.

Answer 1

Is there a wrapper / pimp in Scalaz or something similar?

In Scalaz 7 there’s Memo, which I covered a bit in learning Scalaz day 16.

It’s the first thing Adam Rosien covered in scalaz “For the Rest of Us” talk, so check that out too. He’s using Scalaz 6.