Hytale modding CLI to scaffold, build, link, develop, and deploy server mods locally or over SSH.
Spring Boot multi-module example demonstrating Hexagonal Architecture, Ports & Adapters, and clean separation of business logic from infrastructure.
Portfolio-grade Java 26 / Spring Boot 4 loan amortization and repayment forecasting API with exports, variable rates, and scenario comparison.
Portfolio-grade Java 26 / Spring Boot 4 event-driven ledger platform with Kafka-backed outbox publishing, immutable journal posting, reconciliation workflows, and persisted role-based security.
Portfolio-grade Java 26 / Spring Boot 4 expense categorization API with clean CRUD design, validation, reporting basics, and DTO separation.
Portfolio-grade Java 26 / Spring Boot 4 recurring billing scheduler with schedule generation, idempotent run creation, retries, and lifecycle state management.
Portfolio-grade Java 26 / Spring Boot 4 currency exchange rate service with provider integration, caching, fallback handling, and conversion APIs.
Portfolio-grade Java 26 / Spring Boot 4 subscription billing platform with plans, subscriptions, invoice generation, and payment attempt lifecycle tracking.
An advanced, production-grade URL shortening service built for internet-scale systems. Designed with scalability, observability, and extensibility in mind — yet still under active development with new features being added regularly.
Production-ready authentication and authorization platform built with Spring Boot 4, WebFlux, JWT, API Keys, Redis, PostgreSQL, and reactive microservices.
This repo is just a demonstration for DOP/FP in Java. More could be done so do whatever you want with this code.
Java backend microservice for managing medical imaging devices and publishing domain events via Apache Kafka for the Radio ecosystem
Java backend microservice consuming Apache Kafka events to provide operational and business insights for the Radio ecosystem
Universal Discord operations bot for security recon, moderation, anti-raid protection, Cyber RPG, AI assistance, dashboards, and VC audio. Built with Java 26 + Virtual Threads, Gemini AI, and Discord DAVE E2EE—using free/local resources with no paid security APIs.
Spring Boot 4.1.0 + Java 26 REST API for restaurant table reservations. Features JWT authentication, Keycloak for OAuth2/OIDC IAM, role-based access, Spring Security, concurrent data access, smallest-fit table allocation, hourly time slots, view/delete own reservations, image endpoints, H2 persistence, Swagger UI, Actuator, and Jakarta Validation.
Didactic Java evolution reference with tested examples for features introduced from Java 1 through Java 27.
This is a project that use multithreading and concurrent programming for getting status code. Created: 2026/08/10. Finished: 2026/09/29.
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