Marc Salisbury developed a configurable rate-limiting feature for the Subdomain Center component in the blacklanternsecurity/bbot repository. He implemented adaptive throttling by introducing a sleep interval that activates when HTTP 429 responses are encountered, with the interval value retrieved from web configuration and defaulting to 20 seconds. This backend enhancement, written in Python, allows the system to dynamically adjust to high-traffic scenarios, improving reliability and user experience by reducing rate-limiting bursts. Marc’s work focused on backend development and configuration management, delivering a targeted solution that is traceable to a specific commit and addresses operational challenges during peak usage periods.