PHP Opcache with user session

Hi,

I just read about PHP Opcache today but I just wondered if it's possible to use Opcache on Codeigniter 4 with user session. I tried to enable opcache on my codeigniter 3.x app however a lot of users where able to access session information that belongs to other user.

Also, how to I remove the cache if I updated my code specially in production?

If Opcache with user session is not possible, what would be the most basic alternative? I just wanted to speed up the bootstrap time of codeigniter or the app itself.

Thanks!