A database socket is a communication endpoint that allows programs to connect to a database server over a network. Whenever an application wants to interact with a database, it can use a socket to establish a connection, send requests, and receive responses.
The database socket path refers to the location of the socket file within the server.
The default socket file location on Unix-like systems, including Linux, is the following:
/var/lib/mysql/mysql.sock
On VPS hosting, the socket path might differ depending on the operating system you have installed.