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wtf is sample-framework-boot?

gaearon/sample-framework-boot — explained in plain English

Analysis updated 2026-07-17 · repo last pushed 2017-01-16

2HTMLAudience · developerComplexity · 2/5DormantSetup · easy

TL;DR

A hands-on benchmark demo showing how marking everything in a web app as high-priority backfires and slows the page down instead of speeding it up.

Mindmap

mindmap
  root((repo))
    What it does
      Demos task priority
      Companion benchmark code
      Runs live in browser
    Tech stack
      HTML
      JavaScript
      Build tooling
    Use cases
      See priority tradeoffs
      Test scheduling strategies
      Learn browser scheduling
    Audience
      Web developers
      Performance engineers
    Contributing
      Open issue first
      Then contribute code

Code map

Detail Auto

An interactive map of this repo's files and how they connect — its source is parsed live in your browser. Click Visualize to build it.

filefunction / class

Why would anyone build with this?

REASON 1

Clone, build, and run the benchmark in your browser to see how task priority affects page performance.

REASON 2

Experiment with marking different tasks high-priority to see the real slowdown before doing it in production.

REASON 3

Use it as a teaching example for why browser task scheduling isn't just 'make everything urgent'.

What's in the stack?

HTMLJavaScript

How it stacks up

gaearon/sample-framework-boot100/talk_stockbtea/note
Stars222
LanguageHTMLHTMLHTML
Last pushed2017-01-162022-03-242026-06-11
MaintenanceDormantDormantMaintained
Setup difficultyeasymoderateeasy
Complexity2/53/51/5
Audiencedevelopergeneralgeneral

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · easy Time to first run · 30min

Requires cloning, installing dependencies, and building before you can run it in a browser.

Wtf does this do

This repository contains benchmark code that demonstrates a concept about web performance and how browsers prioritize tasks. Specifically, it's the companion code for a blog post titled "When Everything Is Important, Nothing Is," which explores what happens when you try to mark everything in your web application as high-priority. The project is essentially a testing ground or sandbox. You clone it, install its dependencies, build it, and then run it in your browser to see how different performance strategies play out. The goal is educational, it helps you understand why trying to make everything urgent actually backfires and can slow down your entire page instead of speeding it up. This would be useful for web developers, performance engineers, or anyone building websites who wants to understand how browser task scheduling works in practice. Instead of just reading about priorities in documentation, you can see it happen live. For example, if you're trying to decide whether to mark all your animations and user interactions as "high priority," this code lets you experiment and see the actual performance impact before implementing that approach in your own projects. The README indicates the project welcomes contributions, but encourages potential contributors to open an issue first rather than jumping straight into code, a common practice for keeping the project aligned with the maintainer's vision.

Yoink these prompts

Prompt 1
Walk me through cloning and running this benchmark to see the priority effect in my browser.
Prompt 2
Explain why marking everything high-priority in a web app can slow the page down, using this repo's example.
Prompt 3
Help me adapt this benchmark to test the task priority of my own app's animations and interactions.

Frequently asked questions

wtf is sample-framework-boot?

A hands-on benchmark demo showing how marking everything in a web app as high-priority backfires and slows the page down instead of speeding it up.

What language is sample-framework-boot written in?

Mainly HTML. The stack also includes HTML, JavaScript.

Is sample-framework-boot actively maintained?

Dormant — no commits in 2+ years (last push 2017-01-16).

How hard is sample-framework-boot to set up?

Setup difficulty is rated easy, with roughly 30min to a first successful run.

Who is sample-framework-boot for?

Mainly developer.

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