Create a Distributed Cache

This section will demonstrate how you can create a distributed cache through the NCache Web Manager and the PowerShell.

Using NCache Web Manager

Launch NCache Web Manager by browsing to http://localhost:8251 or <server-ip>:8251 on Windows and Linux.
In the left navigation bar, click on Clustered Caches. This opens up the Clustered Caches page at <server-ip>:8251/ClusteredCaches/.
To create a new clustered cache, click on New.

Create Distributed Cache Web

From the In-Memory Store Type dropdown menu, select Distributed Cache and specify the name of your cache. Select JSON or Binary from the Serialization dropdown menu as per your requirement. Click Next.

Select serialization format web

Select the caching topology and any advanced options like Operation Timeout and Statistic Replication Interval. If you have selected the Partition-Replica Cache topology, you have to select a Replication Strategy, either Asynchronous or Synchronous. Click Next.

Select Caching Topology Web

Specify Maximum Size of the cache, if required. You can also add cache nodes to the cluster by specifying the node IP address and clicking on Add Node button. To add more nodes, click Add Node. Click Next once all the required nodes are added.

Warning

If the cache is already registered on that node, notification is prompted.

Select Replication Strategy Web

Change the Cluster Port and Port Range if required. Enable pipelining for the cache if required by checking the Enable Pipelining checkbox. Set the batch interval for the duration after which the commands will be transmitted over the network in microseconds. Click Next.

Cache Size Clustered Cache Web

If you want to enable encryption and compression, check the Enable Encryption and Enable Compression checkboxes. If enabled, set the Providers and Key for encryption and Threshold Size for compression. Click Next.

Encryption and Compression Settings

In Advanced Options page, you can configure the following settings:
- Eviction is enabled by default. You can configure the Eviction Policy accordingly. If you want to disable eviction, uncheck the check box Enable Eviction.
- You can also change the Eviction percentage; items will be evicted from the cache using this percentage value if eviction is enabled.
- You can change the Clean interval value. Default is 15 seconds.
- This cache can be started automatically upon the completion of this process if you have checked the Start this cache on Finish checkbox on this dialog box.
- You can make the cache to start automatically after service restart by checking the checkbox Auto start this cache on service startup.

Select Eviction Clustered Cache Web

Click Finish. Created cache will appear in Clustered Caches page with the server nodes and their status and a success notification will be received in the notification panel.

Distributed Cache Web

Using PowerShell

You can also use the PowerShell to manage distributed caches by using the NCache supported PowerShell cmdlets.

Create Cache

New-Cache cmdlet enables the user to create a new cache on one or more server nodes.

This command creates a distributed cache named demoClusteredCache of PartitionedOfReplica topology of size 1024MB on node 20.200.20.40. You can explicitly specify InMemoryStoreType as DistributedCache. If InMemoryStoreType is not specified, the command will create a distributed cache since it is the default option.

New-Cache demoClusteredCache -Server 20.200.20.40 -Size 1024 -Topology PartitionedOfReplica

Add Node to Cache

Add-Node cmdlet enables the users to add a new server node to the existing clustered cache on the specified server. It also enables users to have multiple server nodes in a clustered cache.

This command adds a new node 20.200.20.39 to the cache named demoClusteredCache existing on server node 20.200.20.40, which already exists.

Add-Node -CacheName demoClusteredCache -ExistingServer 20.200.20.40 -NewServer 20.200.20.39

Start Cache

Once the cache is created, you need to start the clustered cache on all the server nodes so that operations can be performed on it. Start-Cache cmdlet enables the user to start the registered cache and Cache process on the specified nodes.

Perform this step on all server nodes.

Start-Cache -Name demoClusteredCache -Server 20.200.20.40