03 / 04

Buy01

An e-commerce back end split into Spring Boot microservices, with an Angular storefront.

Set up the Spring Cloud Gateway and the Eureka discovery service that route requests to 3 services, user, product and media.
Built sign-up and login with JWT in user-service, then moved the token check into one gateway filter that strips spoofed identity headers.
Built most of the Angular 21 front end, from login to the seller dashboard, and made the whole stack start with one docker compose up.

Dates: Mar 2026 – Jun 20263 months
Type: Microservices / backend
Status: Source on GitHub
My role: API gateway, auth, Angular front end

Stack

Java 17
Spring Boot 3.5
Spring Cloud Gateway
Eureka
Spring Security
JWT
Apache Kafka
MongoDB
Angular 21
Bootstrap
Docker Compose
Jenkins

View Code

Seller dashboard

Buy01's storefront: a search bar and the seller's menu above a dark hero, "Discover Premium products for your life", with Explore catalog and Sell on Buy01 buttons, then the product grid — Storefront

Buy01's sign-in page: "Your marketplace, reimagined." with a product card on the left, and on the right the email and password form with Google and GitHub buttons — Sign-in page

Buy01's architecture: the Angular client calls the API gateway, which finds the user, product and media services through Eureka; product-service publishes product deletions to Kafka for media-service; each service has its own MongoDB database — Architecture

What it is

An e-commerce platform split into small Spring Boot services. Clients browse the products; sellers create, edit and delete theirs and upload their images.

Every request goes through a Spring Cloud Gateway that checks the JWT, and the services find each other through Eureka. Each service keeps its own MongoDB database, and a Kafka event tells media-service to delete a product's images when the product goes.

What I did

I started the repo and set up the infrastructure: the API gateway, the Eureka discovery service, and user-service with registration, login and the JWTs. I moved the token check into the gateway's AuthenticationFilter and wrote the Docker Compose file and the Dockerfiles. I built most of the Angular 21 front end: login and register, the product list and product pages, the seller dashboard and the profile.

In October 2026 I made the whole stack start with one docker compose up, with Kafka in KRaft mode. My two teammates built product-service, media-service, the Kafka events and the Jenkins pipeline.

Results

One docker compose up starts MongoDB, Kafka, Eureka, the gateway, the three services and the front end. The services expose 16 REST endpoints, and product and image writes are seller-only (@PreAuthorize). I wrote 62 of the repo's 95 commits.

Seller dashboard

Next project 04 / 04

Social Network