Best Practices for API Versioning

This guide provides a comprehensive approach to managing API versions and ensuring compatibility.

API versioning is a critical aspect of long-term API design, allowing you to implement changes and improvements without disrupting existing clients. A well-defined strategy ensures stability, predictability, and backward compatibility – all vital for product success.

1. URL Path Versioning

Versioning is indicated in the URL path. This is the most popular and straightforward approach.

Clear separation of versions is key to maintaining a clean and understandable API structure.

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MAJOR (v1, v2): Breaking Changes – New API Version

Major version changes represent significant alterations to the API.

These versions often involve breaking changes that require clients to update their code.

Frequently asked questions

What is the purpose of frequently asked questions (FAQ)?

Frequently Asked Questions (FAQ) provide answers to common inquiries about API versioning.

When should you create a new major version?

You should create a new major version when making breaking changes: removing fields or endpoints, changing data types, altering required fields, or modifying the semantics of an endpoint.

Is it recommended to support at least two major versions?

It’s recommended to support at least two major versions: the current one and the previous one. This provides clients with a 6-12 month window for migration.

Does GraphQL use versioning or evolution?

GraphQL utilizes evolution instead of traditional versioning. Adding new fields without removing existing ones is the standard practice.

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