Replicated Regions

Introduction

This is a simple example that demonstrates putting values into a VMware GemFire replicated region, checking the size, and retrieving the values.
This example assumes you have installed JDK11 and GemFire.

Steps

1. From the gemfire-examples/replicated directory, build the example and run unit tests

$ ../gradlew build

2. Next start the locator and two servers

$ gfsh run --file=scripts/start.gfsh

3. Run the example to create entries in the region

 $ ../gradlew run

4. Kill one of the servers

$ gfsh -e "connect --locator=127.0.0.1[10334]" -e "stop server --name=server1"

5. Run a gfsh query, and notice that all the entries are still available due to replication

$ gfsh -e "connect --locator=127.0.0.1[10334]" -e "query --query='select e.key from /example-region.entries e'"

6. Shut down the system:

$ gfsh run --file=scripts/stop.gfsh