I just posted this article on my other (work related) blog.
Just to be clear, this was with standard MySQL, InnoDB, and with machines in Amazon’s cloud (AWS).
The data was inserted using standard SQL INSERT statements and can be queried immediately using SQL as well. All standard database stuff, no NoSQL tomfoolery going on.
This kind of high ingest rate has long been considered to be out of the reach of traditional databases; not at all true.