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Machine coding Master

Ex-Apple, Ex-Amazon Engineer | LLD & Machine Coding interview prep | Full working Java implementations with concurrency | javalld.com

Joined Joined on  Personal website https://javalld.com/
The Death of Static Rate Limiters: Why Your Java Virtual Threads Need BBR-Style Adaptive Concurrency
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The Death of Static Rate Limiters: Why Your Java Virtual Threads Need BBR-Style Adaptive Concurrency

#java #concurrency #systemdesign #algorithms
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2 min read
Stop Letting AI Agents Break Your Database: Transactional Multi-Agent Workflows with Temporal and Spring AI
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Stop Letting AI Agents Break Your Database: Transactional Multi-Agent Workflows with Temporal and Spring AI

#java #systemdesign #ai #llm
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2 min read
Stop Using Raw Vector Search: Implement GraphRAG with Spring AI and Neo4j
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Stop Using Raw Vector Search: Implement GraphRAG with Spring AI and Neo4j

#java #systemdesign #ai #llm
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2 min read
Java & AI: What Developers Need to Know
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Java & AI: What Developers Need to Know

#java #programming #ai #tutorial
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2 min read
R2DBC is Dead: Why JEP 491 and Virtual Threads Made Synchronous JDBC the 2026 Performance King
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R2DBC is Dead: Why JEP 491 and Virtual Threads Made Synchronous JDBC the 2026 Performance King

#java #concurrency #systemdesign #programming
1
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2 min read
Java LLD: Mastering LRU and LFU Cache Design for Machine Coding
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Java LLD: Mastering LRU and LFU Cache Design for Machine Coding

#java #interview #design #systemdesign
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2 min read
Stop Logging Your Thoughts: Mapping Agentic Reasoning Traces to Custom JFR Events for Zero-Overhead Debugging
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Stop Logging Your Thoughts: Mapping Agentic Reasoning Traces to Custom JFR Events for Zero-Overhead Debugging

#java #ai #llm #systemdesign
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2 min read
Stop the Boxing Tax: High-Performance Stream Processing with JEP 455 Primitive Type Patterns
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Stop the Boxing Tax: High-Performance Stream Processing with JEP 455 Primitive Type Patterns

#java #programming #computerscience #concurrency
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2 min read
The 'Clean Room' Isolation Pattern: Using JEP 484 to Sandbox Agent-Generated Logic
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The 'Clean Room' Isolation Pattern: Using JEP 484 to Sandbox Agent-Generated Logic

#java #systemdesign #ai #computerscience
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2 min read
Stop Casting Your Events: Leveraging JEP 440 Nested Record Patterns for Type-Safe Multi-Agent Orchestration
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Stop Casting Your Events: Leveraging JEP 440 Nested Record Patterns for Type-Safe Multi-Agent Orchestration

#java #oop #systemdesign #ai
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2 min read
Stop Manual Record Rebuilding: Mastering JEP 468 Derived Record Creation for Functional State Evolution
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Stop Manual Record Rebuilding: Mastering JEP 468 Derived Record Creation for Functional State Evolution

#java #programming #oop #productivity
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2 min read
Killing Latency: Why Global Agentic State Requires JEP 401 Value Classes and CvRDTs
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Killing Latency: Why Global Agentic State Requires JEP 401 Value Classes and CvRDTs

#java #systemdesign #concurrency #ai
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2 min read
Cell-Based Architecture: The Only Way to Survive the 2026 Agentic Loop Explosion
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Cell-Based Architecture: The Only Way to Survive the 2026 Agentic Loop Explosion

#systemdesign #java #ai #concurrency
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2 min read
Stop Guessing Your RAG Quality: Automating Faithfulness Metrics with Spring AI and LLM-as-a-Judge
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Stop Guessing Your RAG Quality: Automating Faithfulness Metrics with Spring AI and LLM-as-a-Judge

#java #ai #llm #systemdesign
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2 min read
Stop Wasting Tokens: High-Performance Local Re-ranking with Spring AI and JEP 489
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Stop Wasting Tokens: High-Performance Local Re-ranking with Spring AI and JEP 489

#java #ai #llm #concurrency
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2 min read
Stop Sequential Tooling: Mastering Claude 5 Stream-Ahead Intent with Java 26 Stream Gatherers
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Stop Sequential Tooling: Mastering Claude 5 Stream-Ahead Intent with Java 26 Stream Gatherers

#java #ai #concurrency #llm
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2 min read
Stop Killing Your GC: Moving 10M Token Contexts Off-Heap with Project Panama
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Stop Killing Your GC: Moving 10M Token Contexts Off-Heap with Project Panama

#java #ai #llm #systemdesign
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2 min read
Claude 4.5 Speculative Tooling: Why Your Java Backend Needs Idempotency or It’s Dead
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Claude 4.5 Speculative Tooling: Why Your Java Backend Needs Idempotency or It’s Dead

#java #systemdesign #ai #llm
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2 min read
Stop Drowning Your Downstream: Managing the Loom-Flood with JDK 27 Flow Adapters
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Stop Drowning Your Downstream: Managing the Loom-Flood with JDK 27 Flow Adapters

#java #concurrency #systemdesign #programming
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2 min read
Java LLD: Designing a High-Concurrency Elevator System
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Java LLD: Designing a High-Concurrency Elevator System

#java #systemdesign #interview #concurrency
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2 min read
Stop Trusting Your AI-Generated Tests: Hardening Codebases with PITest and Claude Code Agentic Loops
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Stop Trusting Your AI-Generated Tests: Hardening Codebases with PITest and Claude Code Agentic Loops

#java #ai #productivity #programming
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2 min read
Java Machine Coding: How to Design a Scalable Cab Booking System (Uber/Ola)
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Java Machine Coding: How to Design a Scalable Cab Booking System (Uber/Ola)

#java #design #oop #interview
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2 min read
The Death of the Strategy Pattern: Why Java’s Sealed Hierarchies Rule 2026 Agentic Workflows
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The Death of the Strategy Pattern: Why Java’s Sealed Hierarchies Rule 2026 Agentic Workflows

#java #systemdesign #ai #programming
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2 min read
Beyond the Stack Trace: Real-time Virtual Thread Pinning Detection with JFR Streaming
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Beyond the Stack Trace: Real-time Virtual Thread Pinning Detection with JFR Streaming

#java #concurrency #systemdesign #productivity
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2 min read
Stop Burning Tokens: Mastering JEP 480 Structured Concurrency for Agentic Workflows
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Stop Burning Tokens: Mastering JEP 480 Structured Concurrency for Agentic Workflows

#java #concurrency #ai #systemdesign
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2 min read
Java Machine Coding: Building a High-Performance Snowflake ID Generator
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Java Machine Coding: Building a High-Performance Snowflake ID Generator

#java #systemdesign #algorithms #interview
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2 min read
Stop Hand-Rolling AI Glue: Claude 4 MCP + Spring AI is the New Enterprise Standard
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Stop Hand-Rolling AI Glue: Claude 4 MCP + Spring AI is the New Enterprise Standard

#java #ai #llm #systemdesign
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2 min read
Java LLD: Designing a High-Concurrency Twitter Feed
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Java LLD: Designing a High-Concurrency Twitter Feed

#java #systemdesign #interview #oop
1
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2 min read
Claude 3.7 + JEP 480: Stop Building Fragile AI Agents with CompletableFuture
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Claude 3.7 + JEP 480: Stop Building Fragile AI Agents with CompletableFuture

#java #concurrency #ai #llm
2
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2 min read
Your Virtual Threads Are Leaking: Why ScopedValue is the Only Way Forward
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Your Virtual Threads Are Leaking: Why ScopedValue is the Only Way Forward

#java #concurrency #systemdesign #programming
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2 min read
Java Machine Coding: Building a Dependency Resolver with Topological Sort
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Java Machine Coding: Building a Dependency Resolver with Topological Sort

#java #algorithms #interview #programming
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2 min read
Java LLD: Designing a Kafka-Like Message Queue for Machine Coding Interviews
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Java LLD: Designing a Kafka-Like Message Queue for Machine Coding Interviews

#java #design #concurrency #systemdesign
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2 min read
Java LLD Interview Prep
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Java LLD Interview Prep

#java #programming #interview #tutorial
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3 min read
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