Software Alternatives, Accelerators & Startups

warmup.rocks VS Practice.dev

Compare warmup.rocks VS Practice.dev and see what are their differences

warmup.rocks logo warmup.rocks

warmup.rocks keeps your CDN cache warm in every edge location worldwide: Cloudflare, Fastly, Akamai, CloudFront and more. Warming from 42 countries, hit-ratio analytics.
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Practice.dev logo Practice.dev

Practice programming for free
  • warmup.rocks Homepage
    Homepage //
    2026-07-18
  • warmup.rocks Dashboard
    Dashboard //
    2026-07-18

A CDN isn't one cache. It's hundreds of independent ones, and most of them are cold.

Cloudflare alone runs 300+ data centers, and each keeps its own cache. A page cached in Frankfurt is still ice cold in Tokyo, so the first visitor per region pays the full origin round trip. In our measurement of 408,000 CDN requests, a cache miss was 3.5x slower than a hit at the median.

warmup.rocks fixes that by requesting your pages from 42 countries on 6 continents on a schedule. Each request enters the CDN network in a different region and fills the edge location it lands in: 90+ locations per warming pass.

What makes it different: verification. We record the cache status (cf-cache-status, x-cache and equivalents) of every single response and show you the hit ratio per edge location, per run. Warming without verification is hoping.

Features

  • Sitemap auto-discovery, nested sitemap indexes resolved before every run
  • CDN auto-detection: Cloudflare, Fastly, CloudFront, Akamai, bunny.net, CDN77
  • Scheduled runs every 1-3 hours depending on plan
  • Deploy hooks + official GitHub Action: re-warm right after your CI purges the cache
  • Mobile cache variant (second pass with a mobile user agent)
  • Email alerts when a WAF rule blocks warming runs

Free tools, no signup: multi-location cache checker and website speed test.

Nothing to install: no plugin, no DNS change. 7-day free trial, plans from $15/month.

  • Practice.dev Landing page
    Landing page //
    2023-01-28

warmup.rocks

$ Details
paid Free Trial $15 / Monthly (1 project, 100 pages per run, Warm every 3 hours)
Platforms
Web Wordpress WooCommerce Wix ReactJS
Release Date
2026 July
Startup details
Country
Switzerland
Founder(s)
Kevin Kyburz
Employees
1 - 9

Practice.dev

Pricing URL
-
$ Details
Platforms
-
Release Date
-

warmup.rocks features and specs

  • Free Resource
    Warmup.rocks offers a collection of button hover effects and micro-interactions completely free of charge, making it accessible to developers and designers of all budgets.
  • Copy-Paste Code
    The site provides ready-to-use CSS and HTML code snippets that can be easily copied and implemented directly into projects, saving development time.
  • Visual Preview
    Users can see live previews of each animation effect before deciding to use it, allowing for quick visual assessment without needing to test code first.
  • Variety of Effects
    The collection includes numerous different button animation styles, giving developers multiple creative options to enhance user interface interactivity.
  • Lightweight Implementation
    The animations are typically built with pure CSS or minimal JavaScript, making them lightweight and easy to integrate without heavy dependencies.

Practice.dev features and specs

  • Interactive Learning
    Practice.dev offers an interactive learning environment that allows developers to practice coding in real-time, which can be more engaging and effective than passive learning methods.
  • Real-World Scenarios
    The platform provides scenarios that mimic real-world problems, helping users to apply their skills in practical situations and preparing them for actual development tasks.
  • Skill Development
    Users can improve their coding skills by working through challenging exercises and receiving feedback, which helps in strengthening problem-solving and coding abilities.
  • Wide Range of Topics
    The platform covers a variety of programming topics and technologies, making it suitable for developers looking to learn or improve upon specific skills.
  • Immediate Feedback
    Practice.dev provides immediate feedback on exercises, allowing users to learn from their mistakes and understand solutions more effectively.

Possible disadvantages of Practice.dev

  • Subscription Cost
    The platform may require a subscription for full access to its features, which could be a barrier for some users, especially students or beginners with limited budgets.
  • Learning Curve
    Beginners might find some of the exercises challenging if they lack foundational knowledge, potentially leading to frustration without adequate support or guidance.
  • Limited Offline Access
    As an online tool, Practice.dev relies on an internet connection, which might limit accessibility for users who wish to practice coding offline.
  • Varied Exercise Quality
    The quality and relevance of exercises can vary, potentially leading to an inconsistent learning experience if some scenarios are not well-constructed.
  • Dependency on Platform
    Since users practice within the platform's environment, there might be a dependency on its tools and setup, which might not perfectly simulate all development environments.

Category Popularity

0-100% (relative to warmup.rocks and Practice.dev)
CDN
100 100%
0% 0
Education
0 0%
100% 100
Web Cache
100 100%
0% 0
Developer Tools
25 25%
75% 75

Questions & Answers

As answered by people managing warmup.rocks and Practice.dev.

Who are some of the biggest customers of your product?

warmup.rocks's answer

  • this:matters GmbH (the Swiss web agency behind the product, running client sites through it)

What makes your product unique?

warmup.rocks's answer

Most cache warmers run from one server, so they only warm the one CDN edge location that server happens to hit. CDNs like Cloudflare cache per data center, 300+ of them, and a HIT in Frankfurt says nothing about Singapore.

warmup.rocks is different:

  • Warms from 42 countries on 6 continents, so the cache gets filled where your visitors actually are
  • Verifies every response (cf-cache-status, x-cache) instead of just firing requests and hoping
  • Shows hit ratio per edge location, so you see whether warming actually works
  • Nothing to install: no plugin, no script tag, no DNS change

Why should a person choose your product over its competitors?

warmup.rocks's answer

Three reasons:

  • Geography. Competitors warm from a single region. We warm from 42 countries, which is the whole point of a CDN cache.
  • Verification. We read the cache status header of every single response and report the actual hit ratio per location, so you see whether warming works instead of taking it on faith.
  • Deploy integration. A deploy hook or our GitHub Action re-warms the cache right after you ship, which is exactly when it's coldest.

Plans start at $15/month with a 7-day free trial.

How would you describe the primary audience of your product?

warmup.rocks's answer

Developers, agencies and store owners who run sites behind a CDN (Cloudflare, Fastly, CloudFront, Akamai, bunny.net) and serve visitors in more than one region. Typical cases:

  • WordPress/WooCommerce sites where preload plugins stop at the server cache
  • Shopify and Magento stores with a long product tail that never stays warm on its own
  • Anyone whose deploys purge the edge cache and leave the first visitor per location with a slow load

What's the story behind your product?

warmup.rocks's answer

I run a web agency in Switzerland, and for years I believed our sites were fast because we put them behind Cloudflare and saw HIT in the headers. Then I measured from other continents: pages that loaded in milliseconds from Zurich took multiple seconds from Tokyo or São Paulo, because each edge location keeps its own cache and most of them were cold.

I built a warmer for our own client sites first, then measured 408,000 CDN requests and found a miss is 3.5× slower than a hit at the median. That data convinced me this should be a product.

Which are the primary technologies used for building your product?

warmup.rocks's answer

  • Node.js + TypeScript with Hono as the web framework
  • SQLite for storage
  • Astro for the public site, vanilla JavaScript for the dashboard
  • Warming requests go through dedicated datacenter proxies in 42 countries

The whole thing runs on a plain VPS behind Cloudflare, which keeps it fast and cheap without a pile of infrastructure.

User comments

Share your experience with using warmup.rocks and Practice.dev. For example, how are they different and which one is better?
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Social recommendations and mentions

Based on our record, Practice.dev seems to be more popular. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

warmup.rocks mentions (0)

We have not tracked any mentions of warmup.rocks yet. Tracking of warmup.rocks recommendations started around Jul 2026.

Practice.dev mentions (3)

  • What is your job and how much do you get paid?
    If you want to benchmark yourself when you learn React. I’ve completed most of the medium/hard react problems at https://practice.dev to get my job. Source: over 4 years ago
  • I created an IDE in the browser with real-time collaboration
    It took me a few months to build practice.dev. Here I extracted the IDE and added live collaboration and npm resolver. It took me 1 week to release live-ide.dev. Source: almost 5 years ago
  • practice.dev - I am creating better FreeCodeCamp
    The idea of practice.dev is to create basics tutorials (currently it's in progress) similar to FreeCodeCamp, and create hundreds of challenges with greater difficulty. Think of it like leetcode/codewars for frontend. Source: almost 5 years ago

What are some alternatives?

When comparing warmup.rocks and Practice.dev, you can also consider the following products

Cache Status - Cache Status is an easy cache status and management tool located right in your address-bar.

Scrimba - Interactive coding screencasts created in an instant

Cache Enabler - A lightweight caching plugin that creates static HTML files and stores them on your web server.

Codelita - Anyone Can Code

CacheFly - The Fastest Global Throughput CDN

Programming Hero - Personalized, fun, and interactive way to learn programming