Performance team meeting summary 12 April 2022

Meeting agenda here and the full chat log is available beginning here on Slack.

Focus group updates

Announcements

@mxbclang

• v1.0.0 release party on Monday, April 18 at 1pm EDT in #performance SlackSlack Slack is a Collaborative Group Chat Platform https://slack.com/. The WordPress community has its own Slack Channel at https://make.wordpress.org/chat/. channel

Images

@adamsilverstein @mikeschroder

GitHub project

• @adamsilverstein: Published a follow-up post about the proposal to add WebP by default
  • Will continue with research and analysis of the main issues raised: Impact of additional WebP images on upload #289 and WebP compatibility #290
  • This research will be a big focus for the team
• @adamsilverstein: Research also continues on Regenerating existing images #24
• @mitogh: PRs for Introduce webp_uploads_prefer_smaller_image_file filter allowing to opt in to preferring the smaller image file #287 and dominant color background for lazy-loading images #282 are ready for review
  • @codekraft: For #282, why not use the JPEG preview, also available with AVIF?
  • @adamsilverstein: Not sure this was ever considered; please leave a comment on Add low quality image placeholders #19
• @adamsilverstein: Contributors have also added some test images to the research work on Optimize compression levels for WebP, test file sizes vs. JPEGs #7

Feedback requested

• Needs Discussion (9 issues)
• Needs Review (2 issues)

Object Cache

@tillkruess @spacedmonkey

GitHub project

• @spacedmonkey: These need review, aiming for BetaBeta A pre-release of software that is given out to a large group of users to trial under real conditions. Beta versions have gone through alpha testing in-house and are generally fairly close in look, feel and function to the final product; however, design changes often occur as part of the process. 1 deadline:
  • Add a limit to _prime_*_cache functions #55463
  • Improve cache key generation in WP_Comment_Query #55460

Feedback requested

• Needs Discussion (2 issues)
• Needs Review (3 issues)

Site Health

N/A

GitHub project

• We’re seeking 1-2 POCs for this group; if you’re interested, please comment here or pingPing The act of sending a very small amount of data to an end point. Ping is used in computer science to illicit a response from a target server to test it’s connection. Ping is also a term used by Slack users to @ someone or send them a direct message (DM). Users might say something along the lines of “Ping me when the meeting starts.” in Slack
• @furi3r: Looking for feedback on PR for Add Site Health test for full page caching (advanced cache) #220
• @furi3r: Not directly related to Site Health, but also working on adding preload support to coreCore Core is the set of software required to run WordPress. The Core Development Team builds WordPress. in Add support for preload links (similar to resource hints) #42438; there’s a related issue for Performance Lab: Preload resources #31. Looking for review.

Feedback requested

• Needs Discussion (4 issues)
• Needs Review (2 issues)

Measurement

@wp-source @josephscott

GitHub project

• No updates

Feedback requested

• Measurement overview doc
• Capturing front-end performance metrics in WordPress doc (for #s 63/64)
• Needs Discussion (5 issues)
• Needs Review (1 issue)

JavaScriptJavaScript JavaScript or JS is an object-oriented computer programming language commonly used to create interactive effects within web browsers. WordPress makes extensive use of JS for a better user experience. While PHP is executed on the server, JS executes within a user’s browser. https://www.javascript.com/.

@aristath @sergiomdgomes

GitHub project

• No updates

Feedback requested

• Needs Discussion (3 issues)
• Needs Review (2 issues)

Infrastructure

@flixos90

GitHub project

• @flixos90: Two PRs merged last week. Backward compatibility and support policy were merged; please read if you haven’t already.
• @mitogh: Raising Removal of release branches #275 for discussion
• @pbearne: Can we add dominant color background for lazy-loading images #282 to 1.0.0?
  • @flixos90: Depends on where it is by the end of the week; if not ready by Friday, will need to go to next release

Feedback requested

• Needs Discussion (3 issues)

Open floor

• @mitogh: We have a lot of issues labeled as Needs Discussion that haven’t been moving. What can we do to move those forward and prevent a big backlog? Recommend using a priority base system on labels similar to the ones used on issues and use this time to discuss next steps or if issues should be closed because they’re not relevant at this time.
• @khoipro: Do we have concerns about mobile vs. desktop caching?
  • @mitogh: Full HTMLHTML HyperText Markup Language. The semantic scripting language primarily used for outputting content in web browsers. caching or something else?
  • @khoipro: Object caching. I’m using Total Cache and it lost a deal with different breakpoints if using PHPPHP The web scripting language in which WordPress is primarily architected. WordPress requires PHP 5.6.20 or higher to test a device agent, but Swift Performance supports it.
  • @mitogh: The user agent can be used as part of the key for the cache in order to invalidate cache when a different agent is used. This issue seems related to how the pluginPlugin A plugin is a piece of software containing a group of functions that can be added to a WordPress website. They can extend functionality or add new features to your WordPress websites. WordPress plugins are written in the PHP programming language and integrate seamlessly with WordPress. These can be free in the WordPress.org Plugin Directory https://wordpress.org/plugins/ or can be cost-based plugin from a third-party manages their keys.

Help wanted

• All issues labeled Needs Discussion
• All issues labeled Needs Decision
• All issues labeled Needs Dev
• All issues labeled Needs Review
• All issues labeled Needs Testing

#core-js, #core-media, #performance, #performance-chat, #summary