Re:Ask HN: What are some technical topics I can blog about?
by acconrad on Tuesday May 22, 2018 @04:07PM
(#17128973)
> it's harder to get traffic
Import your content into Medium (aka "republishing") and you can keep your new blog and still get the popularity boost from your existing Medium blog: https://ryanbattles.com/post/reposting-content
Spark is a niche technology and there isn't a lot of competition. I rank #1 on Google searches for common searches like "spark null", "testing spark", and "spark udf". I haven't done any SEO - I just write what I need to teach my coworkers and Google has picked up my articles.
I'd look for a rapidly growing technology that's relatively new. That'll give you good opportunities to write blogs that rank #1 on Google without doing any SEO.
I am writing all my new posts on a new domain (https://www.mungingdata.com/) and it's harder to get traffic. So Medium might be a good place for you to start.