Jitsi-meet out-of the box technologies

I am new to jitsi-meet (for web) and i came to realise its developed using React.

I have experience with PHP programming language specifically Codeigniter framework and POSTGRES DBMS

I wanted to know what other technologies that are used in jitsi-meet apart from react?
For example:

  • Database storage? Is it MySQL or POSTGRES
    -Any framework involved?
    -HTTP Client
    -Languages making API?

Thanks for any honest feedback