cpp-fraud-detection-rinha-2026

C++17 Drogon implementation for fraud detection to submit at Rinha de Backend 2026.

Architecture

graph LR
    client -->|TCP :9999| lb[Drogon LB]
    lb -->|TCP loopback, keepalive| api1[Drogon API 1]
    lb -->|TCP loopback, keepalive| api2[Drogon API 2]

Loading

Three Drogon-based services share a single Docker image:

service	role	CPU	mem
lb	Drogon reverse-proxy	0.20	40 MB
api1	/fraud-score + /ready	0.40	155 MB
api2	/fraud-score + /ready	0.40	155 MB

Build

docker compose build
docker compose up