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Everything at Netflix is built on Java - from the backend to the server racks at your ISP. Java Champion and Staff Software Engineer at  Netflix, Paul Bakker, has talked about how Netflix uses Java at scale for at least three years in a row. The most recent talk being at Java One 2025. But I know y'all don't have the best attention span, plus I find this absolutely fascinating, so I've condensed what he talked about into a much shorter video. But I highly recommend watching the original talk!

Watch the full video: https://youtu.be/XpunFFS-n8I?si=07rAuG42Gd_Z6VvM

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How Netflix Uses Java is Insane
Everything at Netflix is Built on Java

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Netflix heavily relies on Java for its backend operations, utilizing it for both streaming services and studio applications. While front-end technologies vary, the backend is unified under Java, featuring a microservices architecture supported by GraphQL and gRPC. Netflix transitioned from Java 8 to newer versions like JDK17 and JDK23, improving performance with upgraded garbage collection and exploring virtual threads. Their backend involves distributed data stores and global streaming capabilities. The integration of Spring Boot and active collaboration on its development highlights Netflix's substantial influence on the Java ecosystem.

Netflix is Built on Java

Few years later Netflix moved from Java to Rust

It honestly dint surprise me that lts made on java but it will 100% not get changed and I would personally have made it in other languages

latest news says netflix already moved to 21