Nice. It's probably for some application which has to select from a sizable flow of trading data.
The author is writing in Go, but he's not using Go's approach to concurrency at all - he's using shared memory and atomic compare and swap, not channels. He's still going to get a freeze when Go does a GC.
The article suggests that it is for Workiva WDesk, a product similar to Google Docs/Sheets except for corporate compliance. Collaborators on a document are probably routed to the same backend server that uses the described library to save updates to documents.
Now for the real question- is there an open source implementation of this?
The author is writing in Go, but he's not using Go's approach to concurrency at all - he's using shared memory and atomic compare and swap, not channels. He's still going to get a freeze when Go does a GC.