We have released small under 10K lines of code framework. <a href="https://github.com/venediktov/vanilla-rtb" rel="nofollow">https://github.com/venediktov/vanilla-rtb</a> The bidder can process up to 50K QPS while matching on every impression. The examples are automatically built with 1700-1800 campaigns and regenerated with every build and the framework is shipped with small UI widget to view campaigns loaded in the bidder. We use shared memory for storing campaigns and allow multiple bidders paring with nginx for load balancing. The docker image is also built and released automatically from github on every official release. Please support our project!