Clustering
As of 2.1b1 Slide supports clustering. For clustering to work all Slide instances in a cluster must use the same Store configuration for the portions of the node structure that will be clustered.
The text below is copied from the javadocs for the ClusterCacheRefresher class that implements clustering.
Description
When configured properly this class will register with one or more external Slide instances and listen for changes. Upon notification of a change this class will cause the cache of the local Slide instance to be refreshed for the changed object. Usage
Add the following to your Domain.xml inside the <events> node.
<listener classname="org.apache.slide.cluster.ClusterCacheRefresher"> <configuration> <node local-host="local.host.domain" local-port="4444" repository-host="remote.host.domain" repository-port="8080" repository-protocol="http" username="root" password="root" /> </configuration> </listener>
There should be one <node> element for each node in the cluster, except for the current node. ClusterCacheRefresher should not be configured to listen to itself except for testing purposes.
<node> attributes
Attribute Name |
Required? |
Default Value |
Description |
local-host |
yes |
none |
A network-accessible name or ip-address where the remote Slide instance can reach this server. |
local-port |
yes |
none |
A port number ClusterCacheRefresher can use to listen for notifications. Must be unique. |
repository-host |
yes |
none |
A network-accessible name or ip-address of the remote Slide instance to monitor. |
repository-port |
yes |
none |
The port the remote Slide instance is running on. |
repository-protocol |
no |
http |
The protocol the remote Slide instance is using. Must be one of "http" or "https". |
username |
no |
none |
The username to use to connect to the remote Slide instance. |
password |
no |
none |
The password that goes with the username. |
repository-domain |
no |
/slide |
The context path of the remote Slide instance. |
poll-interval |
no |
60000 |
The number of milliseconds to wait between polling the remote Slide instance for any changes. Polling for changes is a backup only, so this value can be set fairly high. |
udp |
no |
true |
Must be "true" or "false". Indicates whether to use udp or tcp to listen for notifications. |
base-uri |
no |
/ |
The base path to monitor for changes. Will be appended to the repository-domain. |
subscription-lifetime |
no |
3600 |
The number of seconds a subscription should last. Subscriptions are automatically refreshed. Do not set this value too high. |
notification-delay |
no |
0 |
Number of seconds the remote Slide instance should collect events before sending them as a bunch. |