--- title: How Netflix Maps Thousands of Microservices in Real-Time description: Netflix has detailed its internal Service Topology system, which builds and maintains a real-time dependency graph across thousands of microservices. The... canonical: https://daily.dev/posts/how-netflix-maps-thousands-of-microservices-in-real-time-btv6gxgki twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How Netflix Maps Thousands of Microservices in Real-Time | daily.dev og:description: Netflix has detailed its internal Service Topology system, which builds and maintains a real-time dependency graph across thousands of microservices. The... og:url: https://daily.dev/posts/how-netflix-maps-thousands-of-microservices-in-real-time-btv6gxgki og:image: https://api.daily.dev/og/posts/btV6gxGki.png og:image:alt: How Netflix Maps Thousands of Microservices in Real-Time og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How Netflix Maps Thousands of Microservices in Real-Time **[InfoQ](https://daily.dev/sources/infoq)** · 4 min read · 0 upvotes · 0 comments ## Summary Netflix has detailed its internal Service Topology system, which builds and maintains a real-time dependency graph across thousands of microservices. The system merges three data sources — eBPF network flow logs, IPC metrics from instrumented services, and aggregated distributed traces — into a single queryable graph. A three-stage aggregation pipeline collapses multi-hop network paths into direct service-to-service edges. The processing stack runs on Apache Pekko Streams with multi-region Kafka consumers, a custom distributed graph store, and a gRPC API with sub-second response requirements. Historical queries use time-window aggregation to avoid snapshot storage costs. Key design lessons include the failure of static dependency maps in fast-deploy environments and the danger of incomplete data leading engineers to wrong conclusions during incidents. Future plans include adding deployment/config change events and using the graph for automated root cause analysis. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [From Silos to Service Topology: Why Netflix Built a Real-Time Service Map](https://daily.dev/posts/from-silos-to-service-topology-why-netflix-built-a-real-time-service-map-rlefmifnv) · Netflix TechBlog · 20 upvotes · 2 comments - [How Netflix Scaled Its Real-Time Service Map](https://daily.dev/posts/how-netflix-scaled-its-real-time-service-map-u7xt8lptw) · InfoQ · 2 upvotes · 0 comments - [Building Service Topology at Scale: Architecture, Challenges, and Lessons Learned](https://daily.dev/posts/building-service-topology-at-scale-architecture-challenges-and-lessons-learned-qptwmjvf7) · Netflix TechBlog · 26 upvotes · 0 comments --- Tags: [#linux](https://daily.dev/tags/linux), [#observability](https://daily.dev/tags/observability), [#microservices](https://daily.dev/tags/microservices), [#distributed-systems](https://daily.dev/tags/distributed-systems), [#service-mesh](https://daily.dev/tags/service-mesh) [View this post on daily.dev](https://daily.dev/posts/how-netflix-maps-thousands-of-microservices-in-real-time-btv6gxgki) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"How Netflix Maps Thousands of Microservices in Real-Time","url":"https://daily.dev/posts/how-netflix-maps-thousands-of-microservices-in-real-time-btv6gxgki","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-netflix-maps-thousands-of-microservices-in-real-time-btv6gxgki"},"datePublished":"2026-06-05T12:05:19.685Z","dateModified":"2026-06-05T12:05:39.516Z","description":"Netflix has detailed its internal Service Topology system, which builds and maintains a real-time dependency graph across thousands of microservices. 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