thanks for suggesting Ars Technica, I added it to my feed.

Slashdot - https://rss.slashdot.org/Slashdot/slashdotMain

HighScalability - https://feeds.feedburner.com/HighScalability

Hackernews - https://news.ycombinator.com/rss

The verge - https://theverge.com/rss/index.xml