Deploy lazy images to Mobile web beta
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Description

Ensure all blocking tasks resolved
In beta enable the lazy load images flag.

Details

	Subject	Repo	Branch	Lines +/-
	Lazy loaded images in beta	mediawiki/extensions/MobileFrontend	master	+1 -1

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Status	Subtype	Assigned	Task
Open	Release	None	T84936 Release VisualEditor-MediaWiki as "1.0"
Open		None	T50429 [Epic] Support editing parts of a page in VisualEditor-MediaWiki
Open		None	T54365 Explore performance gains from progressive (JIT?) de-alienation in VisualEditor
Open		None	T174303 Copy-pasting linked ISBN numbers from view mode HTML into VisualEditor inserts wikitext links to Special:BookSources (it should turn them into magic links?)
Open	Feature	None	T54091 The read HTML should have hinting to allow full DOM copying (as opposed to just rich copying) from read mode into VE surfaces
Open		None	T55784 [EPIC] Use Parsoid HTML for all page views
Resolved		dr0ptp4kt	T114542 Next Generation Content Loading and Routing, in Practice
Duplicate		• Jhernandez	T104432 [EPIC]: Improve mobile site performance
Duplicate		dr0ptp4kt	T120341 [GOAL] Make Wikipedia more accessible to all connections with new fast API-driven web experience in mobile web beta
Declined		None	T125920 [EPIC] Future exciting reading web performance endeavours
Resolved		Jdlrobson	T113066 [GOAL] Make Wikipedia more accessible to 2G connections
Resolved		Jdlrobson	T124390 [GOAL] Load images with care
Declined		BBlack	T127883 Enable lazy loaded images for 50% of users in production
Resolved		Jdlrobson	T126590 Deploy lazy images to Mobile web beta
Resolved		phuedx	T126592 Remove magic number timeout if possible when lazy loading images
Resolved		Jdlrobson	T126593 Possible problems of loading noscript contents as text when lazy loading images
Resolved		Jdlrobson	T126791 Certain images do not load when wgLazyLoadedImages is true
Resolved		• Jhernandez	T126591 Refreshing page with lazy loading images enabled causes images to not load on load.
Resolved		• Jhernandez	T127128 Images above the fold should not be lazily loaded

Event Timeline

• Jhernandez created this task.Feb 11 2016, 10:23 AM

• Jhernandez raised the priority of this task from to Needs Triage.

• Jhernandez updated the task description. (Show Details)

• Jhernandez added a project: MobileFrontend.

Restricted Application added subscribers: StudiesWorld, Aklapper. · View Herald TranscriptFeb 11 2016, 10:23 AM

Jdlrobson triaged this task as Medium priority.Feb 11 2016, 4:56 PM

Jdlrobson subscribed.

phuedx closed subtask T126592: Remove magic number timeout if possible when lazy loading images as Resolved.Feb 12 2016, 3:52 PM

Jdlrobson added a subtask: T126791: Certain images do not load when wgLazyLoadedImages is true.Feb 12 2016, 6:05 PM

Jdlrobson moved this task from Backlog to Team:Growth on the MobileFrontend board.Feb 18 2016, 6:25 PM

Peter subscribed.Feb 22 2016, 9:14 AM

Jdlrobson added a parent task: T127883: Enable lazy loaded images for 50% of users in production.Feb 23 2016, 10:03 PM

Jdlrobson added a project: Reading-Web-Sprint-67-If, Then, Else...?.

Jdlrobson updated the task description. (Show Details)

Jdlrobson set the point value for this task to 1.Feb 26 2016, 10:33 PM

Jdlrobson moved this task from Needs Analysis to To Do on the Reading-Web-Sprint-67-If, Then, Else...? board.Feb 29 2016, 5:36 PM

Jdlrobson closed subtask T126791: Certain images do not load when wgLazyLoadedImages is true as Resolved.Mar 4 2016, 10:22 PM

Jdlrobson removed subtasks: T127128: Images above the fold should not be lazily loaded, T126591: Refreshing page with lazy loading images enabled causes images to not load *on load*..Mar 7 2016, 9:37 PM

Jdlrobson claimed this task.Mar 7 2016, 9:43 PM

Jdlrobson moved this task from To Do to Doing on the Reading-Web-Sprint-67-If, Then, Else...? board.

Change 275672 had a related patch set uploaded (by Jdlrobson):
Lazy loaded images in beta

https://gerrit.wikimedia.org/r/275672

gerritbot added a project: Patch-For-Review.Mar 7 2016, 9:46 PM

Jdlrobson moved this task from Doing to Code Review on the Reading-Web-Sprint-67-If, Then, Else...? board.Mar 7 2016, 9:46 PM

@Jdlrobson, Why are we doing the config change in MF? Can't we use operations/mediawiki-config?

• Jhernandez added subtasks: T126591: Refreshing page with lazy loading images enabled causes images to not load *on load*., T127128: Images above the fold should not be lazily loaded.Mar 10 2016, 12:17 PM

Jdlrobson closed subtask T126593: Possible problems of loading noscript contents as text when lazy loading images as Resolved.Mar 10 2016, 6:40 PM

@bmansurov we could but I think this is overkill. As I said in the language overlay task, I think it is expected that beta will enable anything it can inside the extension itself. We can always SWAT a patch to turn it off.

Eventually we'll want to convert this config variable into a binary on/off switch for both modes.
IMO we should only need config changes for stable production roll outs.

Jdlrobson closed subtask T127128: Images above the fold should not be lazily loaded as Resolved.Mar 11 2016, 11:47 PM

Jdlrobson closed subtask T126591: Refreshing page with lazy loading images enabled causes images to not load *on load*. as Resolved.

dr0ptp4kt added a project: Reading-Web-Sprint-68-"Java and JavaScript are basically the same".Mar 14 2016, 4:08 PM

dr0ptp4kt set Security to None.

Jdlrobson removed a project: Reading-Web-Sprint-67-If, Then, Else...?.Mar 14 2016, 4:08 PM

Jdlrobson moved this task from Needs Analysis to Code Review on the Reading-Web-Sprint-68-"Java and JavaScript are basically the same" board.Mar 14 2016, 4:11 PM

dr0ptp4kt added a subtask: T130025: Last section not transformed by MobileFormatter.Mar 15 2016, 7:49 PM

Jdlrobson removed a subtask: T130025: Last section not transformed by MobileFormatter.Mar 15 2016, 10:40 PM

Jdlrobson removed a subtask: T126793: Lazy loading images breaks ResourceLoader-blacklisted JavaScript clients.

Jdlrobson moved this task from Code Review to Ready for Signoff on the Reading-Web-Sprint-68-"Java and JavaScript are basically the same" board.

Change 275672 merged by jenkins-bot:
Lazy loaded images in beta

https://gerrit.wikimedia.org/r/275672