In this presentation, Neera Prajapati of Valuebound has discussed on performance optimization in Drupal 8. She has also talked about a range of topics like why website loading time matters? Importance of web performance and how to boost it? and others.

1. Neera Prajapati
https://www.drupal.org/u/neeraprajapati
Performance Optimization in
Drupal 8

2. ● What is Web performance.
● What is performance optimization.
● Why Website Loading Speed Matters.
● How to boost site performance.
● How can we test website speed.
Agenda

3. What is web performance
Web performance refers to the speed in which web pages are
downloaded and displayed on the user's web browser. Web
performance optimization, or website optimization is the field of
knowledge about increasing web performance.
Website performance is a hugely important topic,so big
companies of the Web are obsessed with it. For the Googles,
Yahoos, Amazons and eBays.

4. What is performance optimization
When we modify a website specifically to increase the loading
speed, this is what’s called performance optimization.
Web pages and websites are getting bigger and becoming more
complex every day. But when a website does not load quickly,
it affects visitor’s behavior, which leads to decreases site
revenue.

5. Why Website Loading Speed
Matters
● User Satisfaction: It simply means, If your site loading time is high,
it directly affects the satisfaction or the dissatisfaction levels of
your visitors. They generally expect a fast and reliable online user
experience and if the website is unable to deliver on their
expectation, they will abandon it.
● Improved Search Rankings: Google’s algorithm uses a multiple
factors to determine how to rank search engine results and
loading time is one of the important factor of them.

6. Why Website Loading Speed
Matters… Cont.
● Mobile Users: In today’s era most of the people use mobile for
web surfing rather than using desktop or laptop so loading
time for mobile users is an important factor. Main reason for
that, they are used to have slower internet speed.

7. How important is web
performance in Drupal 8 sites
Drupal 8 is a powerful and versatile content management system
then Drupal 7. However, that power can come with drawbacks,
including the speed of your site. Whenever you load a Drupal page,
there is a lot going on behind the scenes, involving your database,
PHP, CSS, Javascript and more.

8. How to boost performance
In Drupal, there are specific tools and modules are available to
optimize the site speed just you need to know them and use.
Caching is a very popular technique for optimization that
significantly affect the performance.

9. Cache roles in web performance
Caching is a significant part of site performance improvement. It is
broad term refers to the process that store data in some accessible
space so that can be retrieved easily (a platform where we can store
the data and fetch and display it easily).
As we know there are different types of caching as it relates to
website, namely Client side caching and Server side caching
Except these two methods system and pages can be cached in the
database, drupal primarily cached information within its database.

10. Use anonymous user caching: Drupal 8 enables caching by default for
anonymous visitors. That is sufficient for small to medium sized
websites with moderate traffic. You can select the maximum age for
your page caching based on how quickly your website content
changes.
Use external caching techniques: For better result you can use APC,
Varnish, Memcache, and Caching Beyond Drupal Core. Each plays its
own specific role, and requires its own configuration settings to be
reviewed by the site administrator but make sure it is properly
configured.

11. ● Disable unnecessary module
● Update contributed and core modules
● Use devel module for query analysis
● Use XHprof module for php profiling : XHProf is a utility for
profiling PHP. It reports function-level call counts and it’s
execution time.
Specific tools and modules

12. ● Use fast_404 module: HTTP 404 Not Found Errors are
expensive. They cause performance and usability
problems. The Fast 404 Module lets Drupal sites deal with
these bad page requests quickly and efficiently, reducing
the chance that 404s will cause slowdowns or crashes.
● Aggregate/compress css and js file.
● Optimize image.

13. ● Use CDN(content delivery network): If your site has large
amounts of content to display, consider using a content
delivery network (CDN). Most CDNs are used to host static
resources such as images, videos, audio clips, CSS files and
JavaScript. The closer a CDN server is to a site visitor, the
faster the content will be delivered to the visitor’s computer or
mobile device. CDNs help improve global availability and
reduce bandwidth. It stores a cached version of its content in
multiple geographical locations.
Ex: AWS Cloudfront, Akamai
● Use lazyload module for images on websites.

14. ● Remove multiple redirection and of a page.
● Use css sprite for small images combine into one or serve
it from glyphicon
● Use gzip compression: GZIP provides a lossless
compression, that is, we can recover the original data
when decompressing it. It is based on the DEFLATE
algorithm.

15. ● Logging: disable database logging and set slow query log and
set long query time.
● For any new custom database table apply indexing for
search the data.
● Do not use count(*) in count query instead use count(any
field)
Few database related points that we
can't ignore

16. Choose a host that can offer greater
speed
If, after implementing some of the tips above, you are still not
meeting your performance goals, you should consider choosing a
faster host. When you look for hosting, you’ll find many options.
Managed Dedicated Server(s): A managed dedicated server takes
care of all your hosting needs for you. Not only do you get the
hardware but you get a team of experts to make sure everything is
running as it should. They will keep your software up-to-date and
alert you if there are any problems. You can deploy multiple servers
in many configurations

17. Dedicated Server(s): A dedicated server provides low latency which
means a fast response time for most small to medium-sized sites.
Cloud Hosting: Cloud hosting is scalable. The “cloud” means that
there is a data center with lots of dormant servers. As your site’s
needs scale up (or down) the servers in the data center respond
with more server power.
Examples: Acquia Cloud, Pantheon, and Platform.sh.

18. How can we test web performance
There are many free desktop tools and as well as online sites
available. you can use to test and improve your site performance
accordingly. Here are just a few that you can try:
Desktoptools: ApacheBench (ab), Apache jmeter, The Grinder
For more you can visit EasyQA, a test management tool.
Online sites: Pingdom, GTMetrix, YSlow,PageSpeed Insights ,Web
Page Analyzer,Load Impact etc.

19. THANKS!
QUESTIONS?