🧊 404Yeti’s First gRPC Microservice Project

🧊 404Yeti’s First gRPC Microservice Project

Hey snow squad, Yeti here! 👋
Today I’m thawing out my very first backend project — a complete gRPC microservice built with Go, powered by curiosity, caffeine, and just a pinch of chaos.

Let’s walk through why I built it, what I learned, and why it matters (especially if you want to become a security beast).

So why did I build this?

“To break things well, you gotta know how they’re built.” – 404Yeti

As a future pentester, I want to understand everything — from the shiny surface of HTTP requests to the icy depths of gRPC internals.
By building a real-world microservice, I’m learning how APIs, protocols, and app architecture tick before I tear them down later for good.

And let’s be honest — Go and gRPC are modern, powerful, and pretty dang fun to work with.

🧱 So what I built: Kitchen Microservices

Think of it like a food order system… but with less grease and more gRPC.

This app lets users:

  • Create orders via POST to /orders
  • View orders via GET from /orders/view
  • Interact with both gRPC and HTTP
  • Render dynamic HTML via Go templates

🧪 Tech Stack:

  • Go 1.22+
  • Protocol Buffers
  • gRPC (auto-generated code)
  • html/template for rendering dynamic web views
  • Makefile for easy builds and codegen

Wanna peek at the code? It’s all on GitHub:
👉 github.com/404Yeti/kitchen-microservices

🧠What I Learned (and Broke and Fixed)

“Good architecture is like igloo-building — layer by layer, clean, cold, and solid.”

❄️ Key Skills Unlocked:

  • How .proto files generate Go bindings with protoc
  • Setting up clean folder structures that scale
  • Serving gRPC and HTTP from the same binary
  • Using Go templates to securely render dynamic data
  • And most importantly: understanding how gRPC can be a security risk if you don’t do it right

🔐 Why It Matters for Security

This wasn’t just about building something that works. It was about building something that could eventually break — on purpose.

“If you don’t know where the cracks could form, you’ll never know where to patch.”

Here’s what this project helped me think about:

  • How gRPC services can expose internal functions without proper access control
  • How HTTP/gRPC dual stacks can leak behavior through inconsistent API handling
  • The hidden attack surfaces that come from serialization (yup, talking to you, protobuf)

This is a big first step toward building more secure apps, because before I start fuzzing or hacking microservices, I want to know what makes them tick.

🧊 Final Thoughts from the Freezer

This was my first full enterprise-style project — and let me tell you, it’s a wild experience seeing it all come together.
From defining services to rendering HTML to wiring gRPC with HTTP — it’s like learning to ride a snowmobile with no brakes. But I survived.

Should you build something like this?

Yes. 1000x yes.
Whether you’re into AppSec, DevSecOps, or just want to be a better hacker — building microservices is one of the best ways to level up.

“If you want to hack APIs, you better know how to cook one up from scratch.” – 404Yeti

🔗 Check Out the Project:

📦 https://github.com/404Yeti/kitchen-microservices

Got feedback? Ideas? Wanna send me a code review or snowball fight invite? Let’s connect.

Until next time,
404Yeti out. 🐾