Api versioning scalability

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API Versioning & Scalability Deep Dive

Overview

API versioning enables evolution. CDN scales static assets.

Core Concepts

Versioning strategies: 1. Path: /v1/users 2. Header: Accept: application/vnd.api+v2 3. Query: /users?version=2 CDN caches static globally.

Code Examples

// Retrofit with version header
val httpClient = OkHttpClient.Builder()
    .addNetworkInterceptor { chain ->
        val request = chain.request().newBuilder()
            .addHeader("API-Version", "2")
            .build()
        chain.proceed(request)
    }
    .build()

Senior-Level Insights

• Support 2-3 versions simultaneously
• Deprecate old versions on timeline
• Use CDN for APK/updates
• API-as-backend vs backend-for-frontend