LangChain4j is an idiomatic, open-source Java library for building LLM-powered applications on the JVM. It offers a unified API over popular LLM providers and vector stores, and makes implementing ...
Full-stack cinema booking system (Spring Boot 4 + React 19). Concurrency-safe seat locking, idempotent LiqPay payments, refund state machine, self-healing schedulers, RBAC. 1100+ tests with ...
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