[id='configuring-initial-cluster-size_{context}']
= Configuring initial cluster size

{brandname} handles cluster topology changes dynamically.
This means that nodes do not need to wait for other nodes to join the cluster before {brandname} initializes the caches.

If your applications require a specific number of nodes in the cluster before caches start, you can configure the initial cluster size as part of the transport.

.Procedure

. Open your {brandname} configuration for editing.
. Set the minimum number of nodes required before caches start with the `initial-cluster-size` attribute or `initialClusterSize()` method.
. Set the timeout, in milliseconds, after which the Cache Manager does not start with the `initial-cluster-timeout` attribute or `initialClusterTimeout()` method.
. Save and close your {brandname} configuration.

[discrete]
== Initial cluster size configuration

.XML
[source,xml,options="nowrap",subs=attributes+,role="primary"]
----
include::xml/initial_cluster_size.xml[]
----

.JSON
[source,json,options="nowrap",subs=attributes+,role="secondary"]
----
include::json/initial_cluster_size.json[]
----

.YAML
[source,yaml,options="nowrap",subs=attributes+,role="secondary"]
----
include::yaml/initial_cluster_size.yaml[]
----

.ConfigurationBuilder
[source,java,options="nowrap",subs=attributes+,role="secondary"]
----
include::code_examples/InitialClusterSize.java[]
----
