Golang Technical Hub
This is the PFinalClub Golang Technical Hub.
Instead of scattered long-form articles, this page groups the most important Go content by topic so you can:
- Follow a learning path from foundations to production
- Quickly locate a “main article” for a given problem
- Help search engines understand: “friday-go.icu is a high-quality Golang technical site”
1. Production-Ready Go Backend: Error Handling / Security / Observability
Go Error Handling Best Practices 2025 – A Complete Guide
A deep dive into modern Go error handling in 2025: sentinel errors, wrapped errors, custom types, and how to connect errors with logs, metrics, and traces.10 Golang Security Gotchas — And the Fixes That Actually Work
Real-world security pitfalls (SQL injection, password storage, CORS, rate limiting, security headers) and practical fixes.From Trace to Insight: A Closed-Loop Observability Practice for Go Projects
Building an observability loop with OpenTelemetry, from traces/metrics/logs all the way to alerts and engineering decisions.Go Containerization Best Practices: From 800MB to 10MB Docker Images
How to shrink Go container images from 800MB to 10MB while keeping them secure and fast.
2. Web & API: Framework Selection and Practice
Best Go Web Frameworks in 2025 – The Ultimate Developer's Survival Guide
A comparison of Gin / Fiber / Echo / Hertz and more, covering performance, ecosystem, learning curve, and typical use cases.Building Production-Ready GraphQL APIs with Go: Complete Guide 2025
Using gqlgen to build GraphQL APIs, from schema design and auth to performance tuning and deployment.Golang Socket Communication Architecture Analysis – Building High-Performance Game Servers
From TCP/UDP basics to protocol design and concurrency models, for high-concurrency long‑lived connections and game backends.
3. AI & RAG: Building AI Applications with Go
Building RAG System with Golang – From OpenAI API to Vector Database Complete Guide
A step‑by‑step guide to building a full RAG system with Go + OpenAI + Qdrant: chunking, embeddings, vector search, and production optimization.Distributed Tracing in Go Microservices with OpenTelemetry
Once your RAG or Go system evolves into microservices, distributed tracing becomes essential. This article shows how to wire it up with OTel.Advanced Go Concurrency Patterns for Scalable Applications
Advanced concurrency patterns for RAG, streaming, background workers, and high‑throughput services.
4. Tooling & Developer Productivity
Go CLI Utility Development Practice – Master Modern Command-Line Tools in 2025
Build professional CLI tools with Cobra / Viper, suitable for internal tooling or open source projects.10 Essential Go Tools to Boost Development Efficiency
A curated list of Go tools for code quality, performance profiling, dependency management, and more.
5. How to Use This Hub
If you are new to this Golang section, a recommended learning path is:
- Start with foundations: error handling, security, and observability
- Pick your web stack: choose a web framework / GraphQL stack that fits your use case
- Explore AI & RAG: add intelligent search and knowledge retrieval to your existing systems
- Invest in tooling: turn your best practices into CLI tools and automation
You can treat this page as the entry point for all Golang content on PFinalClub.
Both search engines and new readers can quickly see the full picture of what you do in the Go ecosystem.