Data Serialization Formats: JSON, Protobuf, Avro

System Design Interview Roadmap: Newsletter #17

Welcome to article #17 in our System Design Interview Roadmap series! Today, we're diving into data serialization formats—a critical component of any distributed system handling millions of requests per second.

Why Serialization Matters

When building high-throughput systems, how you represent data as it flows between services can make or break your architecture. Choosing the right serialization format impacts:

• Network bandwidth utilization

• Processing overhead

• Storage efficiency

• Developer productivity

• Cross-language compatibility

Let's examine three popular formats that dominate modern system design.

JSON: The Universal Language

JavaScript Object Notation (JSON) has become the lingua franca of web APIs and configuration files. Its human-readable format makes it developer-friendly while still being machine-parsable.

JSON Structure and Flow

JSON Ch…