We love those projects at my company (Inovia Team). Your load is not that big. You won't make any big mistake stack-wise, you just have to pick something you al

We love those projects at my company (Inovia Team). Your load is not that big. You won't make any big mistake stack-wise, you just have to pick something you already have operated before in production at a smaller scale. Mysql, Postgres, Mongodb, Redis will be totally fine. We have a training on how to insert 1M lines a second with off-the-shelf free open source tools (SQL and NoSQL). Ping us if you are interested by getting the slidedeck. Tip: focus on how to backup and restore first, the rest will be easy!