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Latest from Java Architecture Diary

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Java Architecture Diary

Sep 19, 2025 · Backend Development

Why ScopedValues Outperform ThreadLocal for Safe Context Management in Java

ScopedValues provide a more efficient, memory‑safe, and virtual‑thread‑friendly alternative to ThreadLocal for managing per‑thread context in Java, eliminating manual cleanup, reducing memory leaks, and simplifying context propagation across threads, as demonstrated by code examples and performance benchmarks.

ScopedValuesThreadLocalVirtualThreads

0 likes · 6 min read

Why ScopedValues Outperform ThreadLocal for Safe Context Management in Java

Java Architecture Diary

Sep 17, 2025 · Fundamentals

What’s New in Java 25? Explore the Game‑Changing Features and Performance Boosts

Java 25, released on September 16 2025 as the next long‑term support version, introduces a suite of language, runtime, and security enhancements—including compact source files, pattern matching for primitive types, scoped values, a new Shenandoah GC, and a powerful vector API—aimed at improving developer productivity, application performance, and sustainability.

JEPVector APIconcurrency

0 likes · 11 min read

What’s New in Java 25? Explore the Game‑Changing Features and Performance Boosts

Java Architecture Diary

Sep 1, 2025 · Backend Development

How mica-mqtt 2.5.4 Simplifies Dynamic Topic Parsing with Native Annotation Support

mica-mqtt 2.5.4 introduces native Topic variable parsing via enhanced @MqttClientSubscribe and @MqttServerFunction annotations, enabling effortless handling of dynamic MQTT topics, along with performance boosts, server subscription management upgrades, flexible heartbeat detection, and several breaking changes for improved code maintainability.

Backend DevelopmentIoTJava

0 likes · 9 min read

How mica-mqtt 2.5.4 Simplifies Dynamic Topic Parsing with Native Annotation Support

Java Architecture Diary

Aug 13, 2025 · Fundamentals

Master Java’s Unnamed Variables and Patterns: Cleaner Code in JDK 22+

This article explains the upcoming JDK 25 LTS release schedule, introduces Java's unnamed variables and patterns from JEP 443 and JEP 456, shows when and how to use them with practical code examples, outlines important restrictions, and helps developers write more concise and expressive Java code.

JDK 22JavaUnnamed Variables

0 likes · 9 min read

Master Java’s Unnamed Variables and Patterns: Cleaner Code in JDK 22+

Java Architecture Diary

Aug 7, 2025 · Artificial Intelligence

Run OpenAI’s Open‑Source gpt‑oss Models Locally with Ollama – A Quick Guide

OpenAI’s new open‑source gpt‑oss models, available in 20B and 120B sizes, can be run locally via Ollama with features like agentic capabilities, configurable reasoning, fine‑tuning, and MXFP4 quantization, and the article provides step‑by‑step installation, usage, and integration instructions.

AI modelsGPT-OSSJava

0 likes · 8 min read

Run OpenAI’s Open‑Source gpt‑oss Models Locally with Ollama – A Quick Guide

Java Architecture Diary

Aug 5, 2025 · Backend Development

Build a Spring Boot MCP Server to Let AI Safely Call Your App

This guide walks you through creating a lightweight Spring Boot MCP service that securely exposes CRM data as AI‑callable tools, covering project setup, data model definition, tool implementation, registration, and both STDIO and SSE client connections for seamless AI integration.

MCPspring-boot

0 likes · 9 min read

Build a Spring Boot MCP Server to Let AI Safely Call Your App

Java Architecture Diary

Jul 30, 2025 · Artificial Intelligence

What’s New in LangChain4j 1.2.0? Key AI Features and Enhancements

LangChain4j 1.2.0 introduces a suite of stable modules, advanced inference and thinking capabilities, streaming tool calls, and extensive AI service enhancements, offering developers finer control, lower latency, and richer debugging for LLM‑driven applications.

AIJavaLLM

0 likes · 7 min read

What’s New in LangChain4j 1.2.0? Key AI Features and Enhancements

Java Architecture Diary

Jul 28, 2025 · Backend Development

How Spring Framework 7.0 Simplifies Retry and Concurrency with Built‑in Resilience

Spring Framework 7.0 introduces built‑in resilience annotations @Retryable and @ConcurrencyLimit, eliminating the need for external spring‑retry dependencies and enabling declarative retry, exponential backoff, and concurrency throttling—including reactive support—so developers can write cleaner, more robust Java backend services.

@RetryableConcurrencyLimitJava

0 likes · 7 min read

How Spring Framework 7.0 Simplifies Retry and Concurrency with Built‑in Resilience

Java Architecture Diary

Jul 21, 2025 · Backend Development

What’s New in Spring 7.0? Exploring the Modern JmsClient API

Spring 7.0 introduces JmsClient, a modern, stream‑oriented API for JMS messaging that mirrors the design of JdbcClient and RestClient, offering fluent creation, flexible destination configuration, rich QoS options, and simplified send/receive operations compared to the traditional JmsTemplate.

Backend DevelopmentJavaJmsClient

0 likes · 9 min read

What’s New in Spring 7.0? Exploring the Modern JmsClient API

Java Architecture Diary

Jun 25, 2025 · Artificial Intelligence

Build a Text‑to‑SQL Chatbot with Spring AI and DeepSeek LLM

This tutorial walks through creating a natural‑language‑to‑SQL chatbot using Spring AI, configuring a MySQL school database with Flyway, defining system prompts for a DeepSeek LLM, implementing service beans and a REST API, and interacting with the bot via curl commands.

DeepSeekJavaLLM

0 likes · 15 min read

Build a Text‑to‑SQL Chatbot with Spring AI and DeepSeek LLM