Time to First Byte Benchmarks, Set Cookies and Headers in Pull Request Reviews and More

Karolina Szczur

Karolina Szczur

April 13, 2022

Release Notes is a monthly summary of new features, product improvements and upcoming releases.

See how your Sites rank based on Time to First Byte

When you add a new Site to monitor in Calibre, we send a summary email with crucial page speed metrics and how you rank against our measurements dataset. To provide a more comprehensive picture of web performance, alongside Core Web Vitals, we added Time to First Byte to the email report:

Initial Site results email showing benchmarks for four critical page speed metrics.

Set cookies and headers in Pull Request Reviews

Setting Cookies and Headers to either authenticate to your Sites or control the test environment has been in Calibre for some time (set via either the Test Agent or Test Profiles). Now, you can specify those settings while using Pull Request Reviews too:

1version: 2
3 # Headers
4 - headers:
5 - name: X-Calibre-Test
6 value: Pull Request
7 - name: User-Agent
8 value: Calibre
10 # Cookies
11 - cookies:
12 - name: seen-cookie-notice
13 value: true
14 - name: uid
15 value: 1
16 domain: calibreapp.com
17 path: /
18 secure: true
19 httpOnly: true

This is especially useful if you’d like to set cookies and headers only for Pull Request Reviews tests (not inherited from Test Profiles settings). For example, you could set a header to signify that the test is for a Pull Request and should be safely routed to the staging infrastructure.

Bug fixes: Cookie settings description and Pull Request Reviews tests count display

When adding cookies (either in Site → Settings → Test Profiles or Site → Settings → Test Agent) the labels conveying whether cookies are shared with document.cookie and HTTPS/SSL domains were not accurate. This has now been addressed.

When inspecting the test usage breakdown in the Usage section of Billing → Overview, the bar chart didn’t include Pull Request Reviews tests. Now, the chart accurately portrays Snapshots, API tests and Pull Request Reviews tests, so you can visualise how your allocation is used.

Chrome 99 and Lighthouse 9.5

Our Test Agents are now using Lighthouse 9.5 and Chrome 99 to test your Sites.

New documentation: additions to Pull Request Reviews configuration file

We added an example configuration for Pull Request Reviews showing how to set cookies and headers in the config.yml file.

Karolina Szczur

Karolina Szczur

Karolina is the Product Design Lead at Calibre. With years of design experience under her belt, she’s responsible for the comprehensive user experience spanning over product, visuals and content. Find her on Twitter or LinkedIn.


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