Redis

Redis is an in-memory data store that can also be used as a lightweight messaging solution for streaming workloads. Redis leverages the Streams data type to enable low-latency message delivery for time-sensitive analytics and event processing. For customers who prefer a simpler deployment model without Kafka, Redis Streams provides a lightweight alternative that supports core streaming semantics with minimal operational overhead.

Additional information regarding Redis can be found in the Redis documentation.

Redis streams used by various microservices are as follows:

Redis streams

Name	Data Format	Class Name	Description
mdx-raw	Protobuf	nv.Frame	The stream where the Perception microservice sends frame metadata.
mdx-bev	Protobuf	nv.Frame	The stream where the Perception microservice sends Bird’s Eye View (BEV) based frame data.
mdx-behavior	Protobuf	nv.Behavior	The stream used by the analytics pipeline to send behavior data.
mdx-behavior-plus	Protobuf	nv.Behavior	Used by the analytics pipeline to send enhanced behavior data, like assigning cluster details to behaviors.
mdx-alerts	Protobuf	nv.Behavior	For all anomaly data sent by the analytics pipeline.
mdx-events	Protobuf	nv.Behavior	Used for sending various events such as IN/OUT tripwire events and ENTRY/EXIT ROI events.
mdx-frames	Protobuf	nv.Frame	This stream is for enriched frame metadata, which may include additional metrics and analytics, such as FOV and ROI occupancy.
mdx-mtmc	JSON	N/A	Used by the Multi-Camera Tracking (MTMC Analytics) microservice for sending MTMC-related data.
mdx-rtls	Protobuf	nv.Frame	Used by the Real Time Location System (RTLS) microservice for sending RTLS-related data.
mdx-amr	JSON	N/A	Used to send location and events data of Autonomous Mobile Robots (AMRs).
mdx-space-utilization	Protobuf	nv.SpaceUtilization	Used for sending space utilization analytics data.
mdx-notification	JSON	N/A	For sending various notifications such as calibration updates, configuration changes, and sensor management.
mdx-vlm-alerts	Protobuf	nv.Behavior	Used for sending Vision Language Model (VLM) verified alerts.
mdx-incidents	Protobuf	nv.Incident	Used for sending incident data from the analytics pipeline.
mdx-vlm-incidents	Protobuf	nv.Incident	Used for sending Vision Language Model (VLM) verified incident data.
mdx-embed	Protobuf	nv.VisionLLM	Used for sending embedding data for vector similarity searches.

Note

• You can use the redis-py library to produce and consume messages from Redis Streams.