Spade shape with cobalt blue background

Performance Newsletter

Archives
Calibre Monitoring
Free Speed Tools
Log in
Subscribe
15 November 2022

⚡ 114: Get the most out of synthetic monitoring

͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏
 
Performance Newsletter
[issue 114]()
 
#### Editor’s note
 

Synthetic and real user monitoring both have tremendous advantages to web performance workflow. Synthetic monitoring tools often get a bad rep as if they report inaccurate data (and speed pain points)—nothing further from the truth!

Reliable platforms give us data that’s true for selected test settings. Those settings might differ from visitor sessions, but that doesn’t mean they aren’t helpful or don’t report real user experience issues.

While trust should be earned, believing web performance testing and accepting responsibility for improvements is the first step to a better internet.

 
Karolina
 
 
 
 
#### What’s Performance newsletter?
 

Performance Newsletter is a fortnightly mailing by [Calibre](https://calibreapp.com), featuring web performance tools, talks and resources.

Don’t worry—we don’t spam. If you’d like to leave, [unsubscribe]() at any time. Suggest content [here](mailto:[email protected]).

 
 
 
# Articles  
 
Synthetic monitoring illustration
 
### [What is synthetic monitoring and how to get more from it](https://calibreapp.com/blog/synthetic-monitoring)
 
[Ben Schwarz](https://twitter.com/benschwarz)
Synthetic web performance monitoring tools have several unique advantages that help teams improve speed. Here’s what they are and how to get the most benefit.
 
If you use the image_url filter, Shopify will automatically select the best file format for a user's browser.
 
### [Responsive images on Shopify with Liquid](https://performance.shopify.com/blogs/blog/responsive-images-on-shopify-with-liquid)
 
[Sia Karamalegos](https://twitter.com/TheGreenGreek)

Serving optimised, responsive images isn’t easy. Learn how to deliver top-notch image quality with image_url and image_tag filters in Shopify.

 
Caching Schemes
 
### [Five data-loading patterns to improve web performance](https://betterprogramming.pub/five-data-loading-patterns-to-improve-web-performance-57d4f288ef13)
 
[Agustinus Theodorus](https://twitter.com/agustinustheoo)
A framework choice won’t magically solve data loading woes. Here are five strategies, including memory caching, data event sourcing and prefetching, that might help your apps feel snappy.
 
CSS loading based on media link attribute examples
 
### [Conditionally adaptive CSS—browser behavior that might improve your performance](https://pepelsbey.dev/articles/conditionally-adaptive/)
 
[Vadim Makeev](https://twitter.com/pepelsbey_dev)
Can we split and serve CSS based on certain conditions to reduce render-blocking resources? It depends, but it’s a promising experiment!
 
 
 
# Courses, Talks & Podcasts  
 
Test back/forward cache
 
### [What’s new in performance?](https://www.youtube.com/watch?v=jXZd-HzKgM4&ab_channel=WebConferencesAmsterdam)
 
[Katie Hempenius](https://twitter.com/katiehempenius)
It’s hard to keep track of new developments, especially when a lot is happening! Check out this talk to learn about new metrics, APIs and web performance tools.
 
Use @nux/image module to request images close to rendered size
 
### [Best practices for performance in Nuxt](https://docs.google.com/presentation/d/e/2PACX-1vSDhZRkcwaG2C2dZ0Hc23HItcNEkkF52rhhxLIj19Ip127XHu4hrbd0MkUukTbwxUhR0m1Ul6dIkNKO/pub?start=false&loop=false&delayms=3000&resourcekey=0-E0DW78AG3IB66vXazIH00w#slide=id.g13148042407_0_0)
 
[Kara Erickson](https://twitter.com/karaforthewin)
Are you using Nuxt.js? Here’s an excellent roundup of targeted performance strategies and tools to speed up your sites and apps.
 
 
Calibre
 
This email is brought to you by the team at [Calibre](https://calibreapp.com). We automate web performance testing, reporting and alerting, so you don’t have to.
 
 

Performance Newsletter is sent from the traditional lands of the Wurundjeri people of the Kulin nation. We acknowledge that sovereignty was never ceded and pay respects to the Elders past, present and emerging.

Send your suggestions, links and feedback to [[email protected]](mailto:[email protected]).

[View or share this email →]()
[Quickly unsubscribe →]()
[Browse older issues →]()

**Sent by**
<a style='border-collapse: collapse;mso-line-height-rule: exactly;font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";text-decoration: none;font-weight: normal;margin: 0;padding: 0;mso-effects-shadow-color: #2B2B2B;color: #ffffff;'>Calibre Analytics<br/><br/>149A Brunswick Street<br/>Ngár-go<br/>Fitzroy VIC 3065<br/>Australia</a>

 
Don't miss what's next. Subscribe to Performance Newsletter:
← Newer ⚡ 115: Optimise your Vue.js app Older → ⚡ 113: State of web performance in 2022
perf.email
Bluesky
LinkedIn