Anirban Nandi enhanced rate limiting functionality in the docker/envoy repository by developing support for inline rate limit descriptors within the Envoy HTTP rate limit filter. This feature allows descriptors to be defined directly in the filter configuration, enabling per-filter overrides of route-level settings and providing more granular control over traffic shaping. Working primarily with C++, Protobuf, and YAML, Anirban’s approach reduced configuration drift and improved the flexibility of rate limiting policies across services. The work demonstrated a deep understanding of Envoy’s filter architecture and contributed to more efficient policy rollouts and improved test coverage for filter-level configurations.