[hansitomani]

Wow.

I really wana know if they even compress the log data in there database.

40 TB of logs in a postgresql, like that can't be efficient?

I would probably just have a scaling blob store and would store it away. That has to be much faster, simpler and cheaper.

[greggyb]

They mentioned in the article that they are using SQL Servers clustered columnstore index. This is a poor name, as it's more than just an index. CCI in SQL Server is an on-disk storage format that is a highly compressed columnstore.