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Core module of Micrometer containing instrumentation API and implementation
/*
* Copyright 2017 VMware, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.micrometer.core.instrument.binder.cache;
import io.micrometer.core.instrument.*;
import io.micrometer.core.instrument.binder.MeterBinder;
import io.micrometer.core.lang.NonNullApi;
import io.micrometer.core.lang.NonNullFields;
import io.micrometer.core.lang.Nullable;
import java.lang.ref.WeakReference;
/**
* A common base class for cache metrics that ensures that all caches are instrumented
* with the same basic set of metrics while allowing for additional detail that is
* specific to an individual implementation.
*
* Having this common base set of metrics ensures that you can reason about basic cache
* performance in a dimensional slice that spans different cache implementations in your
* application.
*
* @author Jon Schneider
*/
@NonNullApi
@NonNullFields
public abstract class CacheMeterBinder implements MeterBinder {
private final WeakReference