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Programmatic Configuration

Programmatic Infinispan configuration is centered around CacheManager and ConfigurationBuilder API. Although every single aspect of Infinispan configuration could be set programmatically, the most usual approach is to create a starting point in a form of XML configuration file and then in runtime, if needed, programmatically tune a specific configuration to suit the use case best.

Let assume that a new synchronously replicated cache is to be configured programmatically. First, a fresh instance of Configuration object is created using ConfigurationBuilder helper object, and the cache mode is set to synchronous replication. Finally, the configuration is defined/registered with a manager.

The default cache configuration (or any other cache configuration) can be used as a starting point for creation of a new cache. For example, lets say that infinispan-config-file.xml specifies a replicated cache as a default and that a distributed cache is desired with a specific L1 lifespan while at the same time retaining all other aspects of a default cache. Therefore, the starting point would be to read an instance of a default Configuration object and use ConfigurationBuilder to construct and modify cache mode and L1 lifespan on a new Configuration object. As a final step the configuration is defined/registered with a manager.

As long as the based configuration is the default named cache, the previous code works perfectly fine. However, other times the base configuration might be another named cache. So, how can new configurations be defined based on other defined caches? Take the previous example and imagine that instead of taking the default cache as base, a named cache called "replicatedCache" is used as base. The code would look something like this:

Refer to CacheManager, ConfigurationBuilder, Configuration, and GlobalConfiguration javadocs for more details.

ConfigurationBuilder Programmatic Configuration API

However, users do not have to first read an XML based configuration and then modify it in runtime; they can start from scratch using only programmatic API. This is where powerful ConfigurationBuilder API comes to shine. The aim of this API is to make it easier to chain coding of configuration options in order to speed up the coding itself and make the configuration more readable. This new configuration can be used for both the global and the cache level configuration. GlobalConfiguration objects are constructed using GlobalConfigurationBuilder while Configuration objects are built using ConfigurationBuilder. Let's look at some examples on configuring both global and cache level options with this new API:

One of the most commonly configured global option is the transport layer, where you indicate how an Infinispan node will discover the others:

Sometimes you might also want to get global JMX statistics and information about the transport, or the cache manager in general. To enable global JMX statistics simply do:
Further options at the global JMX statistics level allows you for example to configure the cache manager name which comes handy when you have multiple cache managers running on the same system, or how to locate the JMX MBean Server:
Some of the Infinispan features are powered by a group of the thread pool executors which can also be tweaked at this global level. For example:
You can not only configure global, cache manager level, options, but you can also configure cache level options such as the cluster mode:
Or you can configure eviction/expiration settings to:
An application might also want to interact with an Infinispan cache within the boundaries of JTA and to do that you need to configure the transaction layer and optionally tweak the locking settings. When interacting with transactional caches, you might want to enable recovery to deal with transactions that finished with an heuristic outcome and if you do that, you will often want to enable JMX management and statistics gathering too:
Configuring Infinispan with one or several chained persistent stores is simple too:

Advanced programmatic configuration

The fluent configuration can also be used to configure more advanced or exotic options, such as advanced externalizers:

Or, add custom interceptors:
For information on the individual configuration options, please check the configuration guide.

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