How to cache the EAP-TLS session-state in redis

[James Fan]

Hi all,
We have some radius server pods with an external load balancer in front of
them. So, when the TLS requests come from the load balancer, there will be
an error sometimes as follows:

ERROR: (2208) eap: ERROR: rlm_eap (EAP): No EAP session matching state
0x64000d7e672c0070

Can I save the session state in Redis and share it with multiple RADIUS
servers?
I noticed that there is a cache TLS session module in FreeRADIUS 4.0.0, but
I am using FreeRADIUS 3.2.0. Thanks.

James