performance-optimization

Re-engineering a fruit store application with optimized asynchronous logic and robust CRUD operations.

smartbuf-springcloud is a spring-cloud serialization plugin based on smartbuf with better performance, it could coexist with json and seamleassly switch.

Real-time payment processing platform with async fraud detection pipeline: rule-based scoring, JGraphT graph anomaly detection (circular flow, hub signals, cluster analysis), and Python ML microservice. Bounded async queue, WebSocket alerts, JWT auth. JMH-benchmarked. Java 21 · Spring Boot 3 · Python FastAPI · Micrometer · Docker · PostgreSQL.

High-performance Java Spring Boot security audit engine featuring TCP/UDP port scanning, Ping, DNS & TLS latency analysis, weighted security scoring, REST APIs, and MongoDB reporting.

Spring Boot demo comparing JPA lazy loading (N+1 problem) vs EntityGraph optimization. Shows performance difference between 11 queries vs 1 query for Books-Authors many-to-many relationship. Includes query counting, tests, and metrics.

Central Limit Order Book (CLOB) matching engine with price-time priority, performance benchmarking, market simulation, and REST API. Java-based HFT system for quantitative finance.

A caching solution providing in-memory and persistent storage options with synchronized data handling. Includes features for measuring and comparing latency between storage types.

Optimisation des performances d'une API (concurrence, CompletableFuture) — fork OpenClassrooms

A tiny, Spring-free DSL for composing DB work as independent, reusable steps that a scenario assembles into a single session and a single transaction.

Autonomous AI-driven performance optimization for any Java repository

From a remote source, this Android app retrieves and shows personnel data. To start a JSON request with a progress dialog, click the button. With only one click, it ensures a user-friendly experience by parsing and presenting personnel information in a ListView after retrieval.

A production-grade Kafka consumer architecture designed to eliminate consumer lag, rebalance storms, and offset inconsistencies under high-throughput workloads.

Spring Batch performance benchmarks: 7 progressive optimization strategies achieving 22.5x speedup. 1M records, reproducible results. Java 21 + Spring Boot 3.

BillSplit is a cross-platform expense-splitting app built with React Native and Spring Boot, designed to help users easily track shared expenses, split bills, and settle balances among friends or groups. It features secure authentication, real-time syncing, and a clean, intuitive interface for seamless expense management.

A robust Hospital Management System backend built with Java and Spring Boot 3. Implements advanced JPA relationships (One-to-One, Many-to-Many), complex JPQL/Native queries, Pagination, and performance optimizations like solving the N+1 problem.

Multithreading, Concurrency & Parallel programming in Java, with strong emphasis on high performance.

Solution for the Large File Reading Challenge by Kyotu Technology

Here we explored the use of proxies in Spring Boot, focusing on dynamic proxies and CGLIB proxies. It demonstrates how proxies can be used to intercept method calls and provide additional functionality such as logging, security checks, and performance monitoring.

The List<Boolean> we deserve