🧊 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. 🐾