serialization

The best way to choose a .NET serialization format is by selecting schema-based options like Protobuf or MessagePack for performance, or System.Text.Json with source generation for AOT compatibility. This ensures safe, fast, and future-proof data exchange.

To migrate from Newtonsoft.Json, adopt schema-based formats like Protobuf or MessagePack, or switch to System.Text.Json with source generation. This migration guidance includes setup patterns and wire-compatibility considerations to ensure long-lived data integrity without breaking existing APIs.

You need schema-based serialization formats like Protobuf or MessagePack instead of reflection-based approaches like Newtonsoft.Json when you require high performance, AOT compatibility, and strict wire-compatibility for long-lived data, event streams, or gRPC messaging scenarios.

System.Text.Json supports Ahead-of-Time (AOT) compilation when configured with source generation. This approach avoids reflection, ensuring safe and fast serialization performance for modern .NET applications and strict AOT-compatible deployment targets.

To maintain wire-compatibility for long-lived data, use schema-based formats like Protobuf or MessagePack. These formats enforce strict schemas and provide specific setup patterns that prevent breaking changes during data persistence or event streaming across distributed systems.

The limitations of using Newtonsoft.Json include lacking native AOT compatibility, relying on reflection, and posing wire-compatibility risks for long-lived data. Migrating to schema-based formats or System.Text.Json with source generation mitigates these serialization performance issues.