How to inspect a Hazelcast cache¶
Introduction¶
Strongbox uses Hazelcast for caching. While developing it can be useful to get detailed information on the Hazelcast cache clusters. By installing the Hazelcast management center, it is possible to monitor the overall state of Hazelcast clusters, as well as detailed analysis and browsing of data structures in real time, updating map configurations, and taking thread dumps from nodes.
Getting the Management Center up and running¶
Download the Hazelcast Management Center from this page. Unpack the ZIP or TAR file locally.
For Windows, run start.bat. For Linux, run start.sh. This will start the application using default settings at http://localhost:8080/hazelcast-mancenter.
Navigate to http://localhost:8080/hazelcast-mancenter in a browser. You will be prompted for user configuration details. Fill these in and submit.
The Management Center is now ready to receive statistics from the Hazelcast cache clusters in Strongbox.
Pointing the Strongbox at Management Center¶
Setting the cacheManagerConfiguration.managementCenter.enabled property to true will configure Strongbox to send detailed statistics to the Management Center. By default, Strongbox will use the default URL from above, but this can be overridden by using the cacheManagerConfiguration.managementCenter.url property.
Once Strongbox is started, detailed information will be available in the Management Center.
Restrictions¶
The open source edition of Hazelcast Management Center can at most be used by three members in the cluster. Refer to the Hazelcast documentation for more information.