ADVANCED // CUSTOM API
MODULE 10 // CLIENT LIBRARIES

SDK Development.

Build client SDKs that simplify API consumption across languages.

SDK ARCHITECTURE

SDKs abstract API complexity into idiomatic library calls. Good SDKs feel native to each language—following conventions for naming, error handling, and async patterns.

Core SDK components: HTTP client wrapper, authentication handling, request/response serialization, error mapping, and retry logic. Each handles complexity developers shouldn't repeat.

Generate SDKs from OpenAPI spec where possible, then hand-tune for idiomatic usage. Auto-generation ensures consistency with API; hand-tuning ensures developer experience.

HTTP ABSTRACTION

Hide HTTP details. Developers call methods, not construct requests.

AUTH HANDLING

Manage tokens automatically. Refresh before expiration, retry on auth errors.

ERROR MAPPING

Convert HTTP errors to typed exceptions. Language-appropriate error handling.

RETRY LOGIC

Automatic retry with backoff for transient failures. Configurable policies.

KNOWLEDGE CHECK // Q10
Why hand-tune auto-generated SDKs rather than using them directly?