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Thorstensen
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serialization

Select optimal serialization formats for .NET applications.

Updated Mar 3, 2026
Search Tags:#versioning#protobuf#serialization#messagepack#aot#system-text-json#wire-format
One-click install
npx skills add https://github.com/Thorstensen/claude-template --skill serialization-thorstensen
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: serialization
Source: https://github.com/Thorstensen/claude-template/tree/main/.claude/skills/serialization
Command: npx skills add https://github.com/Thorstensen/claude-template --skill serialization-thorstensen

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This guide helps teams pick the right .NET serialization approach for APIs, messaging, and persistence, prioritizing schema-based formats and AOT-friendly JSON.

Core Features & Use Cases

  • Protobuf, MessagePack, and System.Text.Json with source generators as high-performance, versioning-friendly options.
  • Migration guidance from Newtonsoft.Json to System.Text.Json with minimal disruption.
  • Guidance on wire formats, compatibility, and when to prefer schema-based serializers.

Quick Start

Evaluate your data needs and select a format (Protobuf, MessagePack, or System.Text.Json with source generation) aligned to performance, compatibility, and versioning, then apply the chosen approach in your project.

Frequently Asked Questions about serialization

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
What's the best .NET serialization format for performance and versioning?▼

Schema-based formats like Protobuf and MessagePack are best for .NET serialization when prioritizing performance and versioning, as they enforce strict contracts and avoid reflection overhead.

How do I migrate from Newtonsoft.Json to System.Text.Json with minimal disruption?▼

Migrating from Newtonsoft.Json to System.Text.Json involves evaluating data needs and applying source generators for AOT compatibility, ensuring minimal disruption by aligning format choices with performance goals.

Does System.Text.Json support Ahead-of-Time (AOT) compilation in .NET?▼

System.Text.Json supports AOT compilation in .NET by using source generators, which eliminate reflection at runtime and ensure compatibility for trimmed or ahead-of-time compiled applications.

When should I use Protobuf over MessagePack for gRPC and event-sourcing?▼

Use Protobuf over MessagePack for gRPC and event-sourcing when strict schema enforcement and cross-language compatibility are required, whereas MessagePack is preferred for compact binary persistence.

Can I use schema-based serialization for REST APIs instead of reflection-based JSON?▼

You can use schema-based serialization formats like Protobuf or MessagePack for REST APIs to replace reflection-based JSON, ensuring better wire format efficiency and stricter versioning compatibility.

Why does choosing a schema-based serializer improve versioning compatibility?▼

Choosing a schema-based serializer improves versioning compatibility because it defines strict data contracts upfront, preventing breaking changes during message evolution across REST, gRPC, and persistence layers.

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