MODRACXKENNETH D'SILVA

← Archive & Insights

Implementing HTTP/3 with QUIC for Magento & Shopify

HTTP/3 replaces TCP with UDP-based QUIC, eliminating Head-of-Line blocking on lossy cellular networks. Learn how to configure Nginx QUIC modules and Alt-Svc headers.

By Kenneth D'Silva • Reading Time: 35 min read • Category: Security & Compliance

Nginx Alt-Svc HTTP/3 Header Configuration

# Nginx HTTP/3 QUIC Configuration
server {
    listen 443 quic reuseport;
    listen 443 ssl http2;
    server_name modracx.com;

    # Alt-Svc Header advertises HTTP/3 availability to browser
    add_header Alt-Svc 'h3=":443"; ma=86400';
}

Suggested & Related Reading

Explore related engineering guides from Kenneth D'Silva: