Function get_keepalive_env_vars 

pub fn get_keepalive_env_vars() -> Vec<(&'static str, &'static str)>

Get TCP keepalive environment variables for PostgreSQL client tools

Returns environment variables that configure TCP keepalives for external PostgreSQL tools (pg_dump, pg_restore, psql, pg_dumpall). These prevent idle connection timeouts when connecting through load balancers like AWS ELB.

Environment variables returned:

• PGKEEPALIVES=1: Enable TCP keepalives
• PGKEEPALIVESIDLE=60: Send first keepalive after 60 seconds of idle time
• PGKEEPALIVESINTERVAL=10: Send subsequent keepalives every 10 seconds

Returns

A vector of (variable_name, value) tuples to be passed to subprocess commands

Examples

let keepalive_vars = get_keepalive_env_vars();
let mut cmd = Command::new("psql");
for (key, value) in keepalive_vars {
    cmd.env(key, value);
}