Optimize Bigcommerce with Section

sub vcl_recv {
    # Section feature toggles.
    if (!req.http.section-enable-static-caching) {
        set req.http.section-enable-static-caching = "true";
    }

    if (!req.http.section-enable-html-streaming) {
        set req.http.section-enable-html-streaming = "true";
    }
}

    # SWITCH for HTML streaming,
    if(req.http.section-enable-html-streaming == "true" && 
        (req.url ~ "(?i)^/(?=\?|&|$)" ||
         req.url ~ "\/sale\/shoes\/.*" ||
         req.url ~ "\/outlet\/promotion\/.*" || 
         req.url ~ "\/men\/new-arrivals\/.*" ||
         req.url ~ "\/outlet\/boys\/.*")){