A different paradigm to bump up your site performance

You might have seen ample number of blogs, information and other resources out there that talk about the same topic.  But, I will try and make this in steps, so you have step-by-step guide all in here and you will surely spend less time scraping this data from 10 other places.
At the end, I will also list references on where I gathered all this from, so, you can refer and read more if you are an enthusiastic reader.

Have you heard about Google page speed extension?  If you did not, it is fine and I will not say you were living in a cave, in this functional desire world, I wonder why performance is always addressed at the very end of the tunnel in software life cycle.  I would go ahead and say a simple performance test plan should be part of every step of implementation.   It could be simple, but invasive.  It would help mitigate surprises which usually take time to resolve.

There are tons of tools out there as well to measure performance, but, I got hooked on to Google page speeds extension as it is easy to visualize and Google does do a good job of providing links to problems that were uncovered which would provide good insight to multiple solutions to the problem on hand.

Let us get this started –

1. First do not expect anything,  don’t assume that your site is great or worst in terms of performance.  Just download the extension of your favorite choice, I like the Google Page Speeds extension, but, you could run anything
2. Address to one’s Google put’s more weight on and are in red.  I think that would be the critical one’s for sure.  I did the following and saw immediate boost on numbers

Images and Images (Scaling and Optimization)

Firstly ensure you are scaling images on server side (Using Glass params) instead of depending on content authors to upload files of certain dimensions.  Though we tried to enforce this through documentation and collaboration, we still saw lapse.
Best way to battle this is use Glass params, then, regardless of whether recommended size is respected or not, your browser will not spend ton of time sizing and re-sizing images to fit your FEE needs(css)
Get the params based on FEE recommendations, the best thing to do is set width and let height be auto.

Example :@RenderImage(carouselSlide, m => m.Carousel_Image, new { @class = “carousel__image”, w = 684, width = 684 }, true, outputHeightWidth: true)
Please re-upload all imagery that is not respecting the dimensions.  This is important for performance and critical
Also, ensure good/web optimized imagery is loaded on to media library.  If tool complains that some images could do better in terms of performance, please re-upload the culprits.  Should be quick and the tool offers a download option on each of the offensive currently uploaded image.  Go to sitecore editor and do simple attach/detach.  You are done.
Make sure all your site specific css/js is minified and only those minified versions are accessed in your HTML or view code
Ensure web server has compression enabled.  This is a simple check of a checkbox available on IIS under compression for a specific site(Ensure static compression is checked).  Sometimes, if installation is not done correctly even if you checkbox this it might not work.  Please ensure this works by looking at Network request and content-encoding attribute is being set as ‘gzip’.  You can check in fiddler or on Google chrome by toggling the column display to show this response header.  If you dont see gzip, please check with support once you ensure you have enabled the IIS settings properly and things seem off.  This is v important for performance and must be ensured is working
Enable cache control on static resources on web.config to ensure you enable this after talking to your FEE team on what would be a good max age time.  It could vary based on multiple things and should be verified with your team.

After these steps, please follow sitecore performance tuning guide no less than Bible(link in references), go over all content delivery preferences and ensure you set all of them correctly.  When in question about something please check with your support team.

That is it, you just made your sitecore instance super efficient.  The tuning guide should also cover caching best practices which should bump up good performance benefit second load on wards.

Happy Sitecoring!!

Few Good References

https://developers.google.com/speed/pagespeed/insights/
https://sdn.sitecore.net/upload/sitecore7/70/cms_tuning_guide_sc70-72-usletter.pdf
https://chrome.google.com/webstore/detail/google-pagespeed-insights/edbkhhpodjkbgenodomhfoldapghpddk?hl=en
https://developers.google.com/speed/docs/insights/EnableCompression

Author: Deepthi K

I have started my Sitecore journey again. I strongly believe in destiny, which means, this opportunity came on to me for a reason. This blog is a mission I started to pursue and live through this new journey by posting everything I find cool and not so cool about Sitecore. Let’s get started!