I would be curious to compare this PostgreSQL + RabbitMQ + Redis solution with Cassandra. It is very well suited to time series data which is why it is so popular in advertising industries.
Also you would think that rate limiting would be handled at the load balancing layer with Nginx, Apache, Layer7 etc. Way before it gets close to your app.
Not criticising Sentry for doing things a bit different. Redis is a fantastic technology.
We handle rate limiting with iptables, nginx, and Redis. Redis is the final state, but our goal is to make a sustainable and fast rate limiting solution which we can actually report metrics on. When things get dropped in iptables for example we have very little information, and Nginx is almost as low level as that.
Also you would think that rate limiting would be handled at the load balancing layer with Nginx, Apache, Layer7 etc. Way before it gets close to your app.
Not criticising Sentry for doing things a bit different. Redis is a fantastic technology.