What service is responsible for sessions of authorized users?

Question

linux

Hello everyone, please tell me what is responsible for the sessions of authorized users? I need to reset the session for all users, please tell me how to do this? On the server is:
PHP-curl
Ioncube loader
nginx
MySQL
Memcached
libssh2

Answer 1

as a perverted option - to prescribe session cookie lifetime shorter.

Answer 2

ps-auxw | grep username , then kill -9 user PID