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How Netflix Runs on Java?
- Netflix's backend services predominantly run on Java due to the maturity and reliability of the ecosystem around it.
- The architectural backbone of Netflix includes a federated GraphQL platform connecting client apps to various Java backend services.
- Netflix relies heavily on Domain Graph Services (DGS) built with Spring Boot for implementing slices of the GraphQL schema.
- Netflix's services communicate over gRPC internally for efficient service-to-service calls and utilize GraphQL and HTTP for client interactions.
- The transition to JDK 17 and Spring Boot across Netflix services has led to significant improvements in garbage collection efficiency and reduced latency.
- Introduction of ZGC in JDK 21 brought low-pause garbage collection, resulting in reduced service interruptions and improved throughput.
- Implementation of Java virtual threads in Netflix services enabled better scalability and reduced resource consumption compared to traditional threading models.
- Netflix's custom stack on Spring Boot integrates various features like security, observability, service mesh, gRPC framework, and retryable clients.
- Netflix's strategic approach to evolve its Java architecture showcases the importance of continuous optimization and platform ownership for performance gains and reliability improvements.
- Key takeaways include the significance of leveraging modern JVM features, platform ownership, simplifying concurrency with virtual threads, and optimizing infrastructure for improved system reliability.
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