Intent

Efficient cache result is a high-performance framework for saving cached results.It tries to solve the performance problems of some algorithms in high concurrency situations.

Explanation

It almost does not lock to complete the results cache and get the results.In the case of concurrency, when need a result, the result is taken immediately if it has already been calculated.

Applicability

• You frequently calculate a value
• You want to safely save the results under concurrency conditions
• You do not want to lock when saving results

Tutorials

First you should new a entity class of Compute.

//java 1.8
Compute<Long, Long> compute = EfficientCacheCompute.<Long, Long>createNeedComputeFunction(key -> key += 1);

//java 1.7
Compute<Long, Long> compute = EfficientCacheCompute.<Long, Long>createNeedComputeFunction(new Function<Long, Long>() {
    @Override
    public Long apply(Long key) {
        key += 1;
        return key;
    }
});

Second, each call to the compute method begins

long key = 12;
long result = compute.compute(key);

You can also specify any type of object as KeyT and ResultT to make sure your algorithm is more flexible.