Built a similar thing last year -- nginx (openresty) + lua -> NSQ -> python streaming -> BQ Using Metabase for visualization. The other key benefit is you can

Built a similar thing last year -- nginx (openresty) + lua -> NSQ -> python streaming -> BQ Using Metabase for visualization. The other key benefit is you can warehouse the rest of your data in BQ as well -- where it can be easily linked to your non-event data; marketing data from other systems, etc.