This is a spring-boot app which demonstrates how gemfire can be used to cache string objects. It doesn't use any abstraction like spring-cache, instead uses the gemfire objects directly. It assumes that a gemfire cahce-server and a locator is available and has defined a cache region where both the key/value are java.lang.String.
This app implements CommandLineRunner so it will do its work on startup and then terminate. The app checks to see if a value exists in gemfire under the magic-key key. If a value exists under that key, it displays the value in the log output, indicates that the value was FOUND, and exits. If a value doesn't exist under that key, it adds a key/value to gemfire, indicates in the log output that the value was ADDED, and exits.
This is a apache maven app so mvn clean package will create a jar file in the target directory.
The following command will start the application with the default configuration values (the most important are the locator properties for the gemfire server - they are set to localhost and 10334 by default):
mvn spring-boot:run
The following properties can be overridden:
| Property | Default Value |
|---|---|
gemfire.locator.host |
localhost |
gemfire.locator.port |
10334 |
gemfire.region.name |
generic-cache |
For example, to change the locator port to 23456, run the following:
mvn spring-boot:run '-Dgemfire.locator.port=23456'