Performance and Scalability

This module provides passively refreshed page cache.

Users never have to wait for a cacheable response because cached responses do not expire. Instead, they "refresh" by performing an indirect asynchronous request to update the page cache.

This module passively supports Authcache via a reverse proxy. In response to a proxy request advertising support for passive secure sub-requests, this module takes care of instructing the proxy to retrieve the appropriate cacheable page.

This module provides a way to grant access to specific files for a limited period of time to anonymous users. The generated links are protected by a HMAC, i.e. a long string which is not likely to be guessed by an attacker.

Unlike private files delivered by Drupal core, downloads provided by this module are cacheable and also support HTTP cache revalidation. This makes it possible to efficiently serve assets to mobile applications while still maintaining some access restrictions.

Google PageSpeed can be increadibly useful. Or it can be the bane of your existance.
For example, you may have a weird compression issue, or a JavaScript error that cannot be traced back easily.

This simple module allows you to control which pages of your site allow PageSpeed to function.
Disable it for your entire admin, so that you don't have to worry about PageSpeed violating some third-party module JavaScript.

This helped me get out of a jam some time ago, and I figured I'd share it.

Only works with more recent versions of PageSpeed, 2014 or newer.

Use this plugin to spice up your posts with video comments instead of boring text comments. Simply start by creating a new post, the video comment feature is added automatically at the end of the post.

This plugin places two-set widget. First, a sleek 'record video' button, and a video carousel at the end of all of your posts. Official plugin from FranklyMe.

It'll be shown to your audience once your post goes live, where they can take a video selfie (velfie) that'll be viewable by everybody on your site.

The Frankly.me plugin for Drupal adds Frankly.me social plugins to your Drupal site and optimizes the experience of your audience through easy ask buttons and social widgets. Associate your Drupal site with side pane widgets and embed shortcodes for frankly.me ask button and social widgets. All features are deeply integrated with Drupal APIs to make building your webpages and administrative features as easy as possible with the extensibility you expect from Drupal.

Service Workers are a new browser feature that provide event-driven scripts that run independently of web pages. Unlike other workers Service Workers can be shut down at the end of events, note the lack of retained references from documents, and they have access to domain-wide events such as network fetches.

ServiceWorkers also have scriptable caches. Along with the ability to respond to network requests from certain web pages via script, this provides a way for applications to "go offline".

Force caching on Panel Panes.

Inspired by Views cache bully and this issue https://www.drupal.org/node/2175603

This module enforces a global Panels caching mechanism for all Panel Panes. This can drastically improve performance.

Global configuration

admin/structure/panels/settings/panels-cache-bully

The Widget On Demand module provides widgets for form elements which should be loaded on demand.
It also ships with a trait to act as a framework for easy transforming any widget to a widget on demand.

"Block Proxies" is a Module to block unwanted connections from Stranger IPs (Blacklisteds on DNSBL), Anonymous Proxies or many more

Sends pages in a way that allows browsers to show them much faster. First sends the cacheable parts of the page, then the dynamic/uncacheable parts. Uses the BigPipe technique.

See screencast at https://www.youtube.com/watch?v=JwzX0Qv6u3A.