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Dev.to
6/26/2026
Real-Time Network Telemetry for AI: Building an Asynchronous NetFlow/sFlow Ingestion Pipeline in Python

Real-Time Network Telemetry for AI: Building an Asynchronous NetFlow/sFlow Ingestion Pipeline in Python

Short summary

Production-grade Python tutorial for building an asynchronous network telemetry pipeline using Scapy to capture and aggregate live packet flows (NetFlow/sFlow) via a thread-safe Producer-Consumer pattern. Outputs structured JSON events ready for Kafka or AI infrastructure, essential for real-time anomaly detection and security monitoring at scale.

  • Async packet capture with Scapy's non-blocking queue to prevent packet loss during traffic bursts
  • Stateful NetFlow aggregation with 5-tuple flow key tracking and metrics (packet count, byte count, timestamps)
  • Thread pool workers processing flows into structured JSON events for Kafka/vector database streaming

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