Question 1

What is the main difference between http.Get and http.Client.Get?

Accepted Answer

http.Get uses a default HTTP client (http.DefaultClient) that offers no customization, while http.Client.Get allows configuring parameters like timeouts, redirect policies, or custom transport. In production, it is recommended to create a custom HTTP client to control request behavior and avoid indefinite blocking.

Question 2

What happens if http.Client.Timeout is not set?

Accepted Answer

Without an explicit timeout, the HTTP client waits indefinitely for the server response, which can block the application if the server doesn't respond. The default timeout is zero, meaning no time limit. Always set a reasonable timeout in production to avoid blocked goroutines and resource leaks.

Question 3

How to add custom headers to an HTTP request?

Accepted Answer

Custom headers are added via http.Request.Header.Set() or Header.Add() after creating the request with http.NewRequest. The Set method replaces existing values while Add appends a new value for the same key. This approach is necessary for authentication, content negotiation, or tracking requests with custom identifiers.

HTTP Client

What is the main difference between http.Get and http.Client.Get?

Odpowiedź

What happens if http.Client.Timeout is not set?

Odpowiedź

How to add custom headers to an HTTP request?

Odpowiedź

Why is it important to call response.Body.Close()?

Which HTTP method allows sending JSON data to the server?

Inne tematy rekrutacyjne Go

Go Basics

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HTTP Server

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Testing

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Sync Primitives

Go Web Frameworks

REST API Design

gRPC

Reflection

Memory Management

Performance Optimization

Generics

Go Design Patterns

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Security & Authentication

Docker & Containerization

Kubernetes Basics

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CLI Development

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