HeapCache.Tunable (cache2k core implementation 2.4.0.Final API)

java.lang.Object
- org.cache2k.core.util.TunableConstants
- - org.cache2k.core.HeapCache.Tunable

All Implemented Interfaces:

Cloneable

Enclosing class:

HeapCache<K,V>
```
public static class HeapCache.Tunable
extends TunableConstants
```

Field Summary

Fields
Modifier and Type	Field	Description
`StandardCommonMetricsFactory`	`commonMetricsFactory`
`org.cache2k.io.ExceptionPropagator`	`exceptionPropagator`
`int`	`segmentCountOverride`	Override parameter for segment count.
`long`	`sharpExpirySafetyGapMillis`	When sharp expiry is enabled, the expiry timer goes before the actual expiry to switch back to a time checking scheme when the cache is accessed.
`ThreadFactoryProvider`	`threadFactoryProvider`
`long`	`timerLagMillis`

Constructor Summary

Constructors
Constructor Description

Tunable()

Method Summary
- Methods inherited from class org.cache2k.core.util.TunableConstants
  clone
- Methods inherited from class java.lang.Object
  equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - sharpExpirySafetyGapMillis
```
public long sharpExpirySafetyGapMillis
```
    When sharp expiry is enabled, the expiry timer goes before the actual expiry to switch back to a time checking scheme when the cache is accessed. This prevents that an expired value gets served by the cache when the time is too late. Experiments showed that a value of one second is usually sufficient.
    OS scheduling is not reliable on virtual servers (e.g. KVM) to give the expiry task compute time on a busy server. To be safe in extreme cases, this parameter is set to a high value.
  - threadFactoryProvider
```
public ThreadFactoryProvider threadFactoryProvider
```
  - commonMetricsFactory
```
public StandardCommonMetricsFactory commonMetricsFactory
```
  - exceptionPropagator
```
public org.cache2k.io.ExceptionPropagator exceptionPropagator
```
  - segmentCountOverride
```
public int segmentCountOverride
```
    Override parameter for segment count. Has to be power of two, e.g. 2, 4, 8, etc. Invalid numbers will be replaced by the next higher power of two. Default is 0, no override.
  - timerLagMillis
```
public long timerLagMillis
```
- Constructor Detail
  - Tunable
```
public Tunable()
```