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Chapter 6. Configuring Statistics, Metrics, and JMX
Enable statistics that Data Grid exports to a metrics endpoint or via JMX MBeans. You can also register JMX MBeans to perform management operations.
6.1. Enabling Data Grid Statistics
Data Grid lets you enable statistics for Cache Managers and caches. However, enabling statistics for a Cache Manager does not enable statistics for the caches that it controls. You must explicitly enable statistics for your caches.
Data Grid server enables statistics for Cache Managers by default.
Procedure
- Enable statistics declaratively or programmatically.
Declaratively
<cache-container statistics="true"> 1 <local-cache name="mycache" statistics="true"/> 2 </cache-container>
Programmatically
GlobalConfiguration globalConfig = new GlobalConfigurationBuilder() .cacheContainer().statistics(true) 1 .build(); ... Configuration config = new ConfigurationBuilder() .statistics().enable() 2 .build();
6.2. Enabling Data Grid Metrics
Configure Data Grid to export gauges and histograms.
Procedure
- Configure metrics declaratively or programmatically.
Declaratively
<cache-container statistics="true"> 1 <metrics gauges="true" histograms="true" /> 2 </cache-container>
Programmatically
GlobalConfiguration globalConfig = new GlobalConfigurationBuilder() .statistics().enable() 1 .metrics().gauges(true).histograms(true) 2 .build();
6.2.1. Data Grid Metrics
Data Grid is compatible with the Eclipse MicroProfile Metrics API and can generate gauge and histogram metrics.
-
Data Grid metrics are provided at the
vendorscope. Metrics related to the JVM are provided in thebasescope for Data Grid server. - Gauges provide values such as the average number of nanoseconds for write operations or JVM uptime. Gauges are enabled by default. If you enable statistics, Data Grid automatically generates gauges.
- Histograms provide details about operation execution times such as read, write, and remove times. Data Grid does not enable histograms by default because they require additional computation.
Reference
6.3. Configuring Data Grid to Register JMX MBeans
Data Grid can register JMX MBeans that you can use to collect statistics and perform administrative operations. However, you must enable statistics separately to JMX otherwise Data Grid provides 0 values for all statistic attributes.
Procedure
- Enable JMX declaratively or programmatically.
Declaratively
<cache-container>
<jmx enabled="true" /> 1
</cache-container>
- 1
- Registers Data Grid JMX MBeans.
Programmatically
GlobalConfiguration globalConfig = new GlobalConfigurationBuilder()
.jmx().enable() 1
.build();
- 1
- Registers Data Grid JMX MBeans.
6.3.1. Naming Multiple Cache Managers
In cases where multiple Data Grid Cache Managers run on the same JVM, you should uniquely identify each Cache Manager to prevent conflicts.
Procedure
- Uniquely identify each cache manager in your environment.
For example, the following examples specify "Hibernate2LC" as the cache manager name, which results in a JMX MBean named org.infinispan:type=CacheManager,name="Hibernate2LC".
Declaratively
<cache-container name="Hibernate2LC"> <jmx enabled="true" /> ... </cache-container>
Programmatically
GlobalConfiguration globalConfig = new GlobalConfigurationBuilder()
.cacheManagerName("Hibernate2LC")
.jmx().enable()
.build();
6.3.2. Registering MBeans In Custom MBean Servers
Data Grid includes an MBeanServerLookup interface that you can use to register MBeans in custom MBeanServer instances.
Procedure
-
Create an implementation of
MBeanServerLookupso that thegetMBeanServer()method returns the custom MBeanServer instance. - Configure Data Grid with the fully qualified name of your class, as in the following example:
Declaratively
<cache-container> <jmx enabled="true" mbean-server-lookup="com.acme.MyMBeanServerLookup" /> </cache-container>
Programmatically
GlobalConfiguration globalConfig = new GlobalConfigurationBuilder() .jmx().enable().mBeanServerLookup(new com.acme.MyMBeanServerLookup()) .build();
6.3.3. Data Grid MBeans
Data Grid exposes JMX MBeans that represent manageable resources.
org.infinispan:type=Cache- Attributes and operations available for cache instances.
org.infinispan:type=CacheManager- Attributes and operations available for cache managers, including Data Grid cache and cluster health statistics.
For a complete list of available JMX MBeans along with descriptions and available operations and attributes, see the Data Grid JMX Components documentation.
Reference
