com.netflix.servo.util

Class Memoizer<T>

java.lang.Object

com.netflix.servo.util.Memoizer<T>

Type Parameters:

T - Type of the value cached

public final class Memoizer<T>
extends java.lang.Object

A class that can cache the results of computations for a given amount of time.

Method Summary

Modifier and Type	Method and Description
static <T> Memoizer<T>	create(java.util.concurrent.Callable<T> getter, long duration, java.util.concurrent.TimeUnit unit) Create a memoizer that caches the value produced by getter for a given duration.
T	get() Get or refresh and return the latest value.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

create

public static <T> Memoizer<T> create(java.util.concurrent.Callable<T> getter,
                                     long duration,
                                     java.util.concurrent.TimeUnit unit)

Create a memoizer that caches the value produced by getter for a given duration.

Type Parameters:

T - type of the value produced by the getter

Parameters:

getter - A Callable that returns a new value. This should not throw.

duration - how long we should keep the cached value before refreshing it.

unit - unit of time for duration

Returns:

A thread safe memoizer.

get

public T get()

Get or refresh and return the latest value.