g3luka

location ~ ^(/[^/]+/)?files/(.+) {
  try_files /wp-content/blogs.dir/$blogid/files/$2 /wp-includes/ms-files.php?file=$2 ;
  access_log off;     log_not_found off; expires max;
}

#avoid php readfile()
location ^~ /blogs.dir {
  internal;
  alias /var/app/current/wp-content/blogs.dir ;
  access_log off;     log_not_found off; expires max;

g3luka

const imageLazyLoad = (element) => {
  const src = element.getAttribute('data-src');
  element.setAttribute('src', src);
  element.removeAttribute('data-src');
}

const observador = new IntersectionObserver(function(entries) {
  entries.forEach(function(entry) {
    // if (entry.isIntersecting === true || entryintersectionRatio > 0) {
    if (entry.isIntersecting !== true) return;

g3luka

<p style="margin-bottom:100px;">Scroll this page.</p>
<div class="sticky"><h3>Super amazing header</h3></div>