Unable to view cached entries in Infinispan UI with Keycloak 26.2 and standalone Infinispan 15.x #42015

Salah-Rida · 2025-08-20T18:56:11Z

Salah-Rida
Aug 20, 2025

Hi folks,

I’m using Keycloak 26.2 with a standalone Infinispan server 15.0/15.2 in a high availability setup.
Keycloak is configured to use an external Infinispan cache (via cache-ispn.xml).

Context

I created the caches manually in the Infinispan UI.
Both in the Keycloak cache-ispn.xml config and in the Infinispan cache definition, I’ve set the encoding to application/x-protostream.

Observations

In the Infinispan UI → Metrics, I can see the number of entries going up as Keycloak runs, which confirms that the cache is being used.
But in Infinispan UI → Manage entries, it always shows empty, even though the metrics indicate entries exist.

After doing some research, I understand this is related to proto schema visibility / marshalling.

Question

In older setups, we could use:

  <distributed-cache name="sessions" owners="2">
    <remote-store xmlns="urn:infinispan:config:store:remote:13.0"
                  cache="sessions"
                  purge="false"
                  preload="false"
                  segmented="false"
                  shared="true"
                  raw-values="true"
                  marshaller=**"org.keycloak.cluster.infinispan.KeycloakHotRodMarshallerFactory"**>
        <remote-server host="127.0.0.1" port="11222" />
        <security>
            <authentication server-name="infinispan">
                <digest username="admin" password="password" realm="default"/>
            </authentication>
        </security>
    </remote-store>
  </distributed-cache>

But I noticed that the class
org.keycloak.cluster.infinispan.KeycloakHotRodMarshallerFactory
has been deprecated/removed in recent Keycloak versions.

What is the current recommended equivalent or approach so that cached entries become viewable in Infinispan UI?

Being able to view entries in the Infinispan console is important for quick debugging and support.

Thanks in advance for the guidance!
Salah

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Unable to view cached entries in Infinispan UI with Keycloak 26.2 and standalone Infinispan 15.x #42015

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Unable to view cached entries in Infinispan UI with Keycloak 26.2 and standalone Infinispan 15.x #42015

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Salah-Rida Aug 20, 2025

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Salah-Rida
Aug 20, 2025