What powers happycoders.eu?
Last seen Jun 2026 · 17 technologies across 14 categories
Caching
CDN
CMS
Databases
Miscellaneous
Page builders
Performance
Programming languages
Security
UI frameworks
Web servers
Webmail
WordPress plugins
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| java array size | #8 | 53 |
| java array size | #8 | 53 |
| red black tree | #12 | 41 |
| heapsort | #11 | 40 |
| array size java | #5 | 34 |
| length of array java | #8 | 21 |
| priority queue java | #16 | 19 |
| red-black tree java | #2 | 18 |
| red-black tree in java | #2 | 18 |
| red black tree java | #2 | 18 |
| stack vs queue | #10 | 18 |
| length of 2d array in java | #4 | 17 |
| time complexity heap sort | #8 | 14 |
| update java | #58 | 11 |
| deque | #63 | 11 |
| java main method | #15 | 10 |
| deque java | #15 | 10 |
| radix sort time complexity | #9 | 9 |
| length of array in java | #5 | 8 |
| change java version windows | #3 | 7 |
| class header in java | #6 | 7 |
| time complexity for insertion sort | #14 | 7 |
| avl tree in java | #4 | 7 |
| queue vs stack | #16 | 7 |
| order of complexity | #3 | 7 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 78% desktop
- 22% phone
Germany
United States
India
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
5.11 / 10 · ranked #236,284 of all domains
53 referring domains · OpenPageRank
Search traffic
1,100 est. monthly organic visits (US)
1,435 keywords in Google's top 30
Core Web Vitals
| LCP | 2.3 s |
| INP | 25 ms |
| CLS | 0.2 |
| TTFB | 1900 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English (United States)
- CDN: QUIC.cloud
- Weight: 0.3 MB · 25 requests
- WordPress theme: oxygen-is-not-a-theme · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- detected Litespeed Cache Feb 2026
- detected MySQL Jan 2026
- detected Oxygen Jan 2026
- detected WordPress Jan 2026
- detected WPML Jan 2026
- detected Priority Hints Nov 2025
- dropped MySQL Sep 2025
- dropped Oxygen Sep 2025
- dropped WordPress Sep 2025
- dropped Litespeed Cache Aug 2025