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warmup.rocks VS Reactime

Compare warmup.rocks VS Reactime and see what are their differences

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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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Reactime logo Reactime

Time travel debugging tool, visualizing and tracing state
  • 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.

Not present

warmup.rocks

Website
warmup.rocks
Pricing URL
Official warmup.rocks Pricing
$ 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
Edit details

Reactime

Website
reactime.io
Pricing URL
-
$ Details
-
Platforms
-
Release Date
-
Edit details

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.

Reactime features and specs

  • Time Travel Debugging
    Reactime provides a time travel debugging feature, allowing developers to simulate and observe how application state changes over time. This assists in identifying and resolving bugs more efficiently by stepping forward and backward through states.
  • State Management Visualization
    It offers a clear and intuitive visualization of a React application's state changes, making it easier to track and understand complex component interactions and state updates.
  • Performance Optimization Insights
    Reactime helps developers identify performance bottlenecks by providing insights into component rendering and re-render times. This information can be crucial for optimizing the application's performance.
  • Open Source
    Being an open-source tool, Reactime is freely available for developers to use and contribute to, promoting community-driven improvements and transparency.

Possible disadvantages of Reactime

  • Limited Framework Support
    Reactime is specifically designed for React applications, which may not be suitable for projects utilizing other frameworks such as Angular or Vue.js.
  • Learning Curve
    While providing powerful features, Reactime might have a steep learning curve for developers new to state management tools or those unfamiliar with its interface and functionalities.
  • Potential Performance Overhead
    When integrated into a complex application, Reactime might introduce some performance overhead, particularly if used extensively during development, which could affect real-time feedback and responsiveness.
  • Browser Extension Dependency
    Reactime relies on a browser extension for its functionality, which may not be convenient for developers reluctant to use additional tools or those who prefer integrated IDE solutions.

Category Popularity

0-100% (relative to warmup.rocks and Reactime)

warmup.rocks

Reactime

CDN
100 100%
CDN
0% 0
Developer Tools
28 28%
Developer Tools
72% 72
Web Cache
100 100%
Web Cache
0% 0
Debugging
0 0%
Debugging
100% 100

Questions & Answers

As answered by people managing warmup.rocks and Reactime.

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 Reactime. For example, how are they different and which one is better?
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What are some alternatives?

When comparing warmup.rocks and Reactime, 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.

Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.

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

Atomize React - An open source design system for ReactJS

CacheFly - The Fastest Global Throughput CDN

Sonar by Facebook - Extensible mobile app debugging for iOS and Android

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