session caching on tomcat 7 with APR

[Усманов Азат Анварович]

Hello everyone! I have a webapp running on tomcat 7.0.92 with java 7 with 
APR/tomcat native 1.2.19 on RHEL 6

I've tested website(debug.ieml.ru) on which my webapp is running  on ssllabs  
server test and one thing I've noticed is the  orange warning line saying
Session resumption (caching)    No (IDs empty)
which obviously means that session caching is not enabled

So the question is how to enable it when using Apr

tomcat connector documentation has sessionCacheSize attribute  but it is for 
JSSE only and not APR

Am I missing some other attribute which enables on APR connector

or does this mean that APR doesn't use SSL session caching?

Here is  my connector from server.xml

<Connector allowTrace="false" server=" " port="8443"
  protocol="org.apache.coyote.http11.Http11AprProtocol"
           redirectPort="8443"
           SSLHonorCipherOrder="true"
           SSLCertificateFile="server.crt"
           SSLCertificateKeyFile="server.key"
           SSLCertificateChainFile="authorities.crt"
           SSLProtocol="TLSv1.2+TLSv1.3"
           maxThreads="350"  minSpareThreads="25" SSLEnabled="true"
           enableLookups="false" disableUploadTimeout="true"
           acceptCount="100" scheme="https" secure="true"
   compression="force"
SSLCipherSuite="TLS_CHACHA20_POLY1305_SHA384,TLS_AES_256_GCM_SHA384,TLS_AES_128_GCM_SHA256,ECDHE-ECDSA-AES256-GCM-SHA384
 ,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,    
ECDHE-ECDSA-AES256-GCM-SHA256,ECDHE-RSA-AES256-GCM-SHA384,ECDHE-ECDSA-AES128-GCM-SHA256,
  
ECDHE-RSA-AES128-GCM-SHA256,ECDHE-ECDSA-AES256-SHA384,ECDHE-RSA-AES256-SHA384,ECDHE-ECDSA-AES128-SHA256,ECDHE-RSA-AES128-SHA256,
ECDHE-RSA-AES128-SHA,ECDHE-RSA-AES256-SHA"></Connector>