Hi Carsten, a starting point could be: modparam("db_redis", "keys", "pua=entry:etag&pres:pres_id,pres_uri”) I’ve tested it on Kamailio 5.3.3, with default schema definition: # cat /etc/kamailio/db_redis/kamailio/pua id/int,pres_uri/string,pres_id/string,event/int,expires/int,desired_expires/int,flag/int,etag/string,tuple_id/string,watcher_uri/string,call_id/string,to_tag/string,from_tag/string,cseq/int,record_route/string,contact/string,remote_contact/string,version/int,extra_headers/string, 7 and it seems to do the right thing, e.g. with having: modparam("pua", "db_url", "redis://localhost:6379/42”) modparam("pua", "db_table", "pua") modparam("pua", "db_mode", 2) modparam("pua", "db_table_lock_write", 0) the changes to database are reflected immediately, i.e. my dialoginfo and reginfo records are being written. I have not checked yet what is the most efficient index structure for the pua but the BLF is working with db_redis for me. Hope this helps, Andrew