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Deep-dive articles on System Design, Java, Databases, AI/ML, and distributed systems. Written by an Engineering Manager who has built systems at scale.

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System Design: Building a Distributed Cache

System Design: Building a Distributed Configuration Platform

System Design: Building a Fraud Detection Platform

System Design: Building an Inventory Reservation System

System Design: Building a Payment Reconciliation Engine

System Design: Building a Search Indexing Platform

AI Infrastructure on AWS: SageMaker, EKS GPU Scheduling, and Cost-Efficient Inference

Kubernetes for AI Inference: GPUs, Autoscaling, Queues, and Cost Control

LLM Evaluation at Scale: LLM-as-Judge, RAGAS, and Building Automated Eval Pipelines

LLM Inference Optimization: Quantization, KV Cache, and High-Throughput Serving

LLM Observability in Production: Traces, Evals, Cost, Latency, and Failure Modes

MCP for Backend Engineers: Tools, Agents, and Production Guardrails

PostgreSQL Locking Playbook: Deadlocks, Blocking Queries, and Timeouts

Retrieval Systems for RAG: BM25, Dense Retrieval, Hybrid Search, and Reranking

Spring Boot Timeouts: The Production Guide for HTTP, DB, Redis, and Kafka

System Design: Building an API Gateway Platform

System Design: Building an Authorization Service

System Design: Building a Data Export Platform

System Design: Building a Distributed Lock Service

System Design: Building an Email Delivery Platform

System Design: Building a Feature Flag Platform

System Design: Building a File Upload Platform

System Design: Building a Distributed Job Scheduler

System Design: Building a Metrics Platform Like Prometheus

System Design: Building a Secrets Management Platform

System Design: Building a Usage Metering and Billing Platform

System Design: Building a Webhook Delivery Platform

Idempotency Keys in APIs: Retries, Duplicate Requests, and Exactly-Once Illusions

Cache Invalidation Patterns: TTL, Write-Through, Cache-Aside, and Event-Driven Eviction

Database Connection Pool Tuning: HikariCP, PostgreSQL, and Traffic Spikes

Kafka Consumer Lag: Causes, Diagnosis, and Production Fixes

Multi-Region Architecture: Active-Active, Active-Passive, and Consistency Trade-Offs

Production Incident Playbooks: Debugging Latency, Errors, and Traffic Spikes

Spring Boot Production Readiness Checklist: Timeouts, Pools, Health Checks, and Observability

System Design: Building an Audit Log System for Compliance and Debugging

System Design: Building a Feature Store for Real-Time Machine Learning

Transactional Outbox Pattern: Reliable Event Publishing Without Dual Writes

Using Open Source Models with Claude Code: A Developer's Guide

Java Concurrency Patterns: CompletableFuture, Structured Concurrency, and Thread-Safe Design

Building Production Observability with OpenTelemetry and Grafana Stack

AWS Lambda in Production: Cold Starts, Concurrency, and Cost Optimization

Event Sourcing and CQRS in Production: Beyond the Theory

Cassandra Data Modeling: Design for Queries, Not Entities

gRPC vs REST vs GraphQL: Choosing the Right API Protocol

DynamoDB Advanced Patterns: Single-Table Design and Beyond

Java Memory Management Deep Dive: Heap, GC, and Production Tuning

Kubernetes in Production: Patterns Every Backend Engineer Must Know

Zero-Downtime Database Migrations: Patterns for Production

PostgreSQL Performance Tuning: From Slow Queries to Sub-Millisecond Reads

Spring Security OAuth2 and JWT: Production Implementation Guide

Elasticsearch Query Optimization: From Slow to Sub-100ms

Scaling Spring Boot Applications to Handle 10 Million Daily Active Users

Multi-Tenancy Architecture: Database, Application, and Infrastructure Patterns

Designing a Retry System Without Causing a Retry Storm

Feature Flags and Progressive Delivery: Safe Releases at Scale

Microservices Are Overrated for Most Startups

Terraform Infrastructure as Code: Production Patterns and Pitfalls

Designing a High-Throughput Notification System for 100K Events per Second

Java Profiling and Heap Analysis: Finding Memory Leaks and CPU Bottlenecks

WebSocket and SSE for Real-Time Systems: Architecture and Production Patterns

Redis Caching Strategy at Scale: Beyond Simple Key-Value

Cloud Cost Optimization: Engineering Practices That Cut AWS Bills by 50%

Designing Idempotent Payment Systems in Distributed Architecture

Kafka Streams: Real-Time Stream Processing Without a Separate Cluster

Kafka Exactly-Once Semantics: Myth vs Production Reality

Designing a Database Sharding Strategy for 100 Million Users

Thread Pool Exhaustion in Spring Boot: Diagnosis, Prevention, and Recovery

SQS vs Kafka vs EventBridge: Choosing the Right Messaging System on AWS

Service Mesh with Istio: mTLS, Traffic Management, and Observability

Time-Series Databases: InfluxDB vs TimescaleDB vs Prometheus

Fine-Tuning LLMs: When to Fine-Tune, When to Prompt

AWS ECS vs EKS: Choosing the Right Container Orchestration

Building AI Agents with Tool Use: From Chatbot to Autonomous Agent

Java Streams API: Advanced Patterns and Performance

System Design: Video Streaming Platform at Netflix Scale

System Design: Real-Time Chat Application at Scale

Java Design Patterns: When to Use Them, When to Avoid Them

Spring Boot Performance Tuning: From 200 to 2000 RPS