Create New Pub/Sub Messaging Cache
A Pub/Sub Messaging cache can be created through NCache Web Manager and PowerShell.
The process to create a Pub/Sub Messaging cache is the same as creating a Distributed Cache, except that you have to specify the In-Memory Store Type as Pub/Sub Messaging instead of Distributed Cache.
Make sure NCache Service is started. If it is not started, do the following:
- For .NET, type the following command in PowerShell (run as admin):
Start-Service -Name NCacheSvc
- For .NET Core, run NCacheSvc as Administrator.
Using NCache Web Manager
Launch NCache Web Manager by browsing to http://localhost:8251 or
<server-ip>:8251on Windows and Linux.
In the left navigation bar, click on Clustered Caches. This opens up the Clustered Caches page at
<server-ip>:8251/ClusteredCaches/. The page shows any existing clustered caches on your machine and additional details like Topology, Servers and Server Platform.
To create a new Pub/Sub Messaging cache, click on New.
- From the In-Memory Store Type dropdown menu, select Pub/Sub Messaging and specify the name of your cache. Select JSON or Binary from the Serialization dropdown menu as per your requirement. Click Next.
If a cache with the specified name already exists, you are prompted with an error message.
It is recommended that you use JSON serialization if you are using ASP.NET 5.0 and above. For more details click here.
- 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.
- 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.
If a node is already registered on that cache, notification is prompted.
- 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.
- 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.
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.
- Click Finish. Created cache will appear in Clustered Caches page with the server nodes and their status. A success notification will be received in the notification panel.
You can use the PowerShell to manage Pub/Sub Messaging caches by using the NCache supported PowerShell cmdlets.
New-Cache cmdlet enables the user to create a new cache on one or more server nodes.
This command creates a Pub/Sub Messaging cache named demoClusteredCache of Partitioned-Replica topology of size 1024MB on server nodes 184.108.40.206 and 220.127.116.11.
New-Cache demoClusteredCache -InMemoryStoreType PubSubMessaging -Server "18.104.22.168,22.214.171.124" -Size 1024 -Topology PartitionedOfReplica