Administration guide > Plan the WebSphere eXtreme Scale environment

Cache topology: In-memory and distributed caching


With WebSphere eXtreme Scale, the architecture can use...

eXtreme Scale requires minimal additional infrastructure, such as disk, to operate. The infrastructure consists of scripts to install, start, and stop a JEE application on a server.

Cached data is stored in the eXtreme Scale server, and clients remotely connect to the server.

In-memory environments

When you deploy in a local, in-memory environment, eXtreme Scale runs within a single JVM and is not replicated.

To configure a local environment you can use an ObjectGrid XML file or the ObjectGrid APIs.

Distributed environments

When you deploy in a distributed environment, eXtreme Scale runs across a set of JVMs, increasing the performance, availability and scalability. With this configuration, you can use data replication and partitioning. You can also add additional servers without restarting the existing eXtreme Scale servers. As with a local environment, an ObjectGrid XML file, or an equivalent programmatic configuration, is needed in a distributed environment. You must also provide a deployment policy XML file with configuration details

You can create either simple deployments or large, terabyte-sized deployments in which thousands of servers are needed.

See Also

Parent topic:

Plan the WebSphere eXtreme Scale environment

Related concepts

Plan overview
Hardware and software requirements
JEE considerations
Catalog service
Container servers, partitions, and shards
Capacity planning

Related reference

Directory conventions
Operational checklist