README.md

Geode cache loader example

This is a simple example that demonstrates loading values using a CacheLoader. Invoking Region.get() causes the CacheLoader to produce a value that is stored in the region. This approach is commonly used to fetch data from other systems like a database.

This example assumes you have installed Java and Geode.

Steps

1. From the geode-examples/loader 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 load the entries

    $ ../gradlew run
   

   The example fetches the entries twice. The first retrieval is slow, simulating a network call. Subsequent retrievals are much faster since the values are stored in the cache. The loader logs requests into the Geode server logs. You can find those at build/server1/server1.log or build/server2/server2.log.

4. Shut down the system:

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