Topic

Gin & Echo LLM API Integration

12 posts on gin & echo llm api integration — part of api integration on the n4n AI blog.

Testing Gin LLM routes with httptest and table tests

Learn how to test Gin LLM routes using httptest and table driven tests in Go, with runnable examples for robust LLM API integration.

July 17, 20263 min read

API integrationGuide

Structuring a Gin project for a multi-provider LLM proxy

Practical guide to organizing a Gin-based multi-provider LLM proxy: directory layout, provider interfaces, routing, streaming, and middleware for auth and metering.

July 17, 20263 min read

API integrationHow-to

Request validation for chat completions in Echo

Learn how to implement strict echo request validation chat completions in Go using Echo and validator, with step-by-step code and tests to block bad LLM API calls.

July 17, 20263 min read

API integrationHow-to

Rate limiting LLM endpoints with Gin middleware

Implement token-aware rate limiting for LLM APIs in Go using Gin middleware. Step-by-step guide with code for protecting endpoints from abuse.

July 17, 20263 min read

API integrationGuide

Graceful error responses for LLM failures in Echo

A practical guide to building resilient Echo middleware for LLM API failures: structured errors, retries, fallbacks, and clear client contracts in Go.

July 17, 20263 min read

API integrationHow-to

Gin middleware for LLM API key authentication

Learn how to build Gin middleware for LLM API key authentication in Go. Step-by-step guide with runnable code to validate keys and proxy to model gateways.

July 17, 20263 min read

API integrationHow-to

Echo middleware for logging LLM request latency

Step-by-step guide to building Echo middleware for request latency logging of LLM API calls in Go, with runnable code, structured logs, and verification.

July 17, 20264 min read

API integrationHow-to

Context propagation for LLM calls in Echo handlers

Learn how to implement echo context propagation llm calls in Go Echo handlers with request-scoped values, timeouts, and trace IDs end to end, step by step.

July 17, 20263 min read

API integrationHow-to

Streaming SSE responses from Echo to the browser

Learn how to implement echo golang sse streaming browser connections step by step, proxying LLM API streams to clients with proper flush and cleanup.

July 16, 20263 min read

API integrationTutorial

Proxying chat completions through a Gin handler

Build a Go Gin handler that proxies OpenAI-style chat completions requests to an LLM gateway, with streaming, auth injection, and error handling.

July 16, 20263 min read

API integrationComparison

Gin vs Echo for building an LLM gateway in Go

A practical head-to-head comparison of Gin vs Echo for building an LLM gateway in Go, covering latency, streaming, middleware, and ecosystem tradeoffs.

July 16, 20264 min read

API integrationTutorial

Building an OpenAI-compatible endpoint in Gin

A hands-on Go tutorial: implement a gin openai compatible endpoint that forwards chat completions to an upstream LLM provider with proper API contracts. Learn request shaping and streaming.

July 16, 20262 min read