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Java Architecture Diary

Mar 25, 2026 · Artificial Intelligence

Building Java AI Agents with Koog: A Hands‑On Guide to Native Java Agent APIs

JetBrains' newly released Koog for Java provides a native Java AI Agent framework that lets developers annotate methods as tools, assemble agents with a Builder‑style API, and let large language models orchestrate multi‑step tasks without writing explicit control flow, as demonstrated with banking and e‑commerce examples.

AI AgentBuilder APIJava

0 likes · 9 min read

Building Java AI Agents with Koog: A Hands‑On Guide to Native Java Agent APIs

Java Architecture Diary

Mar 23, 2026 · Artificial Intelligence

How Rust Token Killer Cuts AI Coding Token Costs by 90% in Seconds

The article explains how the Rust Token Killer (RTK) tool filters out unnecessary CLI output, dramatically reducing token consumption for AI code assistants by up to 89%, extending session length threefold, and provides quick installation and usage instructions.

AICLIClaude Code

0 likes · 6 min read

How Rust Token Killer Cuts AI Coding Token Costs by 90% in Seconds

Java Architecture Diary

Mar 20, 2026 · Artificial Intelligence

Why AskUserQuestionTool Makes Java AI Ask Clarifying Questions First

The article explains how Spring AI's AskUserQuestionTool brings an interview‑style questioning model to Java, letting AI clarify ambiguous requirements before generating code, and provides step‑by‑step implementation details, code samples, and a walkthrough of the underlying tool architecture.

AI toolJavaRequirement Clarification

0 likes · 8 min read

Why AskUserQuestionTool Makes Java AI Ask Clarifying Questions First

Java Architecture Diary

Mar 12, 2026 · Artificial Intelligence

JetBrains Air vs OpenAI Codex App: Which AI Coding Tool Really Wins?

The article compares JetBrains Air and OpenAI Codex App, detailing their architectures, model support, isolation mechanisms, pricing, and market positioning, and ultimately advises developers to favor terminal‑based AI tools over heavyweight desktop applications.

JetBrains AIROpenAI CodexTerminal CLI

0 likes · 7 min read

JetBrains Air vs OpenAI Codex App: Which AI Coding Tool Really Wins?

Java Architecture Diary

Mar 10, 2026 · Artificial Intelligence

Turn Your Terminal into a Self‑Running AI Agent with Claude Code’s /loop

This guide explains how to use Claude Code’s /loop command to create autonomous AI agents that periodically execute tasks such as deployment monitoring, PR inspection, and daily change summaries, offering a smarter alternative to traditional cron jobs.

AI AgentClaude CodeGitHub CLI

0 likes · 9 min read

Turn Your Terminal into a Self‑Running AI Agent with Claude Code’s /loop

Java Architecture Diary

Mar 9, 2026 · Artificial Intelligence

Mastering Agent Skills in LangChain4j: Build a Java Code Analysis Assistant

This tutorial introduces LangChain4j's new Agent Skills feature, explains its core concepts, and walks through a complete example of creating a reusable code‑analysis skill in Java, covering dependency setup, skill definition, integration, and expected runtime behavior.

Agent skillsCode AnalysisLLM

0 likes · 8 min read

Mastering Agent Skills in LangChain4j: Build a Java Code Analysis Assistant

Java Architecture Diary

Mar 6, 2026 · Artificial Intelligence

How Claude Code 2.1.69 Cuts Context Usage by 95% with Lazy‑Loaded Tool Search

Claude Code 2.1.69 introduces a lazy‑loaded Tool Search that defers loading of Model Context Protocol (MCP) tools until needed, dropping system‑tool context from around 10% to zero, dramatically reducing token consumption and improving tool selection accuracy.

Claude CodeContext managementMCP

0 likes · 7 min read

How Claude Code 2.1.69 Cuts Context Usage by 95% with Lazy‑Loaded Tool Search

Java Architecture Diary

Mar 5, 2026 · Backend Development

What’s New in Spring Boot Admin 4.0.0? Deep Dive into Core, UI, and RestClient Upgrade

Spring Boot Admin 4.0.0 launches with a revamped core framework, Java 25 support, a new PrimeUI theme, RestClient‑based communication, JSpecify null‑safety, Jackson 3 migration, and a temporary Jolokia limitation, offering a comprehensive upgrade for Spring‑based monitoring.

RestClientbackend-monitoringjackson3

0 likes · 8 min read

What’s New in Spring Boot Admin 4.0.0? Deep Dive into Core, UI, and RestClient Upgrade

Java Architecture Diary

Mar 3, 2026 · Backend Development

Auto Memory in Claude Code: Let AI Write and Recall Your Project Notes Automatically

Claude Code’s new Auto Memory feature automatically captures build commands, code conventions, architecture notes, and debugging experiences into local markdown files, eliminating the need for manual CLAUDE.md maintenance and enabling seamless project context across terminal sessions.

AI programmingAuto MemoryCLI tool

0 likes · 10 min read

Auto Memory in Claude Code: Let AI Write and Recall Your Project Notes Automatically

Java Architecture Diary

Feb 10, 2026 · Artificial Intelligence

Boost RAG Accuracy with LangChain4j 1.11.0 Hybrid Search on PgVector

This guide explains why pure vector retrieval often fails for version‑specific queries, introduces hybrid search that combines semantic and keyword matching, and provides step‑by‑step code and SQL examples for enabling PgVector hybrid search in LangChain4j 1.11.0.

Hybrid SearchLangChain4jRAG

0 likes · 11 min read