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1. currency-converter currency-converter Public

   Zero-dependency Java library for real-time currency exchange rates. Supports 165+ currencies (ISO 4217), 5 providers with automatic failover, TTL caching, and parallel queries on Java 21+ via virtu…

   Java 18 3

2. study-everyday study-everyday Public

   A personal knowledge base and daily study log covering algorithms, system design, databases, deployment, design patterns, Java, Kotlin, Swift, Spring, React, Docker, Kubernetes, and more.

   Java 3

3. java-swing-tutor java-swing-tutor Public

   An interactive desktop application for learning Java Swing GUI development through hands-on, task-based programming exercises.

   Java 3 1

4. skill-repeater-service skill-repeater-service Public

   Micronaut REST backend for a spaced-repetition skill tracker. Manages skills with configurable repetition intervals, level progression, history tracking, and scheduled email reminders. JWT-secured,…

   Java 2

5. rest-security rest-security Public

   Authorization without the authentication overhead: role-based and same-user access control for Java (core, JWT, and Spring annotations)

   Java 1

6. auth-service auth-service Public

   Micronaut authentication service with JWT access/refresh tokens, BCrypt password hashing, and OAuth 2.1/OIDC social login (Google, Facebook, GitHub, Discord, Apple, Microsoft). PostgreSQL-backed wi…

   Java