Nginx configuration to reduce TTFB

default.conf

server {
    resolver 1.1.1.1 1.0.0.1 valid=300s;
    resolver_timeout 5s;

    ssl_buffer_size 8k;
    ssl_verify_client off;

    client_body_timeout 12;
    client_header_timeout 12;
    client_max_body_size 900m;

    keepalive_timeout 65;
    keepalive_disable none;
    keepalive_requests 10000;
    reset_timedout_connection on;

    http2_push_preload on;
    large_client_header_buffers 4 16k;
}