select 'http_header' as component,
    'public, max-age=300, stale-while-revalidate=3600, stale-if-error=86400' as "Cache-Control";

select 'dynamic' as component, properties FROM example WHERE component = 'shell' LIMIT 1;
select 'text' as component, sqlpage.read_file_as_text('your-first-sql-website/nginx.md') as contents_md;