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Java Backend Technology

Focus on Java-related technologies: SSM, Spring ecosystem, microservices, MySQL, MyCat, clustering, distributed systems, middleware, Linux, networking, multithreading. Occasionally cover DevOps tools like Jenkins, Nexus, Docker, and ELK. Also share technical insights from time to time, committed to Java full-stack development!

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Latest from Java Backend Technology

100 recent articles max

Java Backend Technology

Feb 5, 2026 · Backend Development

Why Your Spring @Transactional May Fail and How to Fix It

This article explains the common reasons Spring transactions become ineffective or fail to roll back—such as wrong method visibility, final modifiers, self‑invocation, non‑Spring beans, multithreading, unsupported table engines, misconfigured propagation, swallowed exceptions, and improper rollback settings—while providing practical code solutions and best‑practice recommendations.

AOPDatabaseJava

0 likes · 20 min read

Why Your Spring @Transactional May Fail and How to Fix It

Java Backend Technology

Feb 4, 2026 · Operations

Master n8n: Install, Configure, and Build AI‑Powered Automated Workflows

This guide walks you through installing n8n via npx or Docker, registering an account, understanding core concepts like workflows, nodes, and connections, and building a complete AI‑driven automation that fetches Weibo hot topics, processes them with a large language model, and emails the results.

AI integrationDockerNode.js

0 likes · 10 min read

Master n8n: Install, Configure, and Build AI‑Powered Automated Workflows

Java Backend Technology

Feb 3, 2026 · Backend Development

Why Companies Still Cling to JDK 8 After JDK 25? A Deep Technical Analysis

This article explores why many enterprises continue to run on JDK 8 despite newer releases, examining compatibility breaks, stability, learning costs, third‑party library support, performance trade‑offs, commercial considerations, and toolchain readiness, and offers practical guidance for migration decisions.

JDK8compatibilityjdk-upgrade

0 likes · 14 min read

Why Companies Still Cling to JDK 8 After JDK 25? A Deep Technical Analysis

Java Backend Technology

Jan 29, 2026 · Databases

How to Securely Automate Database Backups with Databasus

Databasus is a free, open‑source, self‑hosted backup tool that supports PostgreSQL, MySQL, MariaDB and MongoDB, offers flexible scheduling, multiple storage backends, enterprise‑grade encryption, team collaboration features, and can be installed via a simple script or Docker.

DevOpsDockerOpen-source

0 likes · 7 min read

How to Securely Automate Database Backups with Databasus

Java Backend Technology

Jan 27, 2026 · Backend Development

Zero‑Downtime Spring Boot Deployment: Sharing a Single Port Across Versions

This article explains how to update a Spring Boot application without stopping the service by allowing two processes to share the same port, detailing the underlying Tomcat embedding, DispatcherServlet handling, and providing step‑by‑step code and a live demo to achieve seamless zero‑downtime deployments.

deploymentport-switchingspring-boot

0 likes · 9 min read

Zero‑Downtime Spring Boot Deployment: Sharing a Single Port Across Versions

Java Backend Technology

Jan 26, 2026 · Backend Development

Linking Distributed Logs with a Unified traceId in Spring Boot

This guide explains how to generate a unique traceId for each request, propagate it through REST, MQ, and RPC modules, and configure Log4j2 to include the traceId in log output, enabling clear end‑to‑end request tracing in a Spring Boot project.

Distributed TracingLogginglog4j2

0 likes · 8 min read

Linking Distributed Logs with a Unified traceId in Spring Boot

Java Backend Technology

Jan 21, 2026 · Artificial Intelligence

Unlock Seamless Document Search with WeKnora: An Open‑Source LLM‑Powered Retrieval Framework

WeKnora is an open‑source, LLM‑driven document understanding and semantic search framework that extracts structured content from PDFs, Word files, and images, builds a unified knowledge graph, and enables natural‑language queries through a modular RAG architecture with flexible deployment options.

AILLMRAG

0 likes · 7 min read

Unlock Seamless Document Search with WeKnora: An Open‑Source LLM‑Powered Retrieval Framework

Java Backend Technology

Jan 20, 2026 · Backend Development

What Maven 4 Brings: New POM Model, Flattened Consumer POMs, and Parallel Build Power

Maven 4 introduces a revamped POM model (4.1.0), separates build and consumer POMs to eliminate unnecessary metadata, adds explicit artifact types for classpath and module jars, renames modules to subprojects, adopts a tree‑based lifecycle for true parallel builds, and provides powerful configuration and upgrade tools, all aimed at modern Java projects.

Artifact TypesJavaPOM

0 likes · 8 min read

What Maven 4 Brings: New POM Model, Flattened Consumer POMs, and Parallel Build Power

Java Backend Technology

Jan 15, 2026 · Backend Development

Why Our Custom Snowflake ID Generator Failed and How to Build a Reliable One

A recent production incident revealed duplicate order IDs caused by a flawed custom Snowflake implementation; the article reviews the standard Snowflake structure, pinpoints design mistakes such as a 31‑bit timestamp, IP‑based business IDs, and zeroed worker IDs, and offers concrete recommendations and proven library alternatives for safe distributed ID generation.

ID generationJavaSnowflake

0 likes · 7 min read

Why Our Custom Snowflake ID Generator Failed and How to Build a Reliable One

Java Backend Technology

Jan 12, 2026 · Backend Development

Mastering Druid: Advanced Spring Boot Connection Pool Optimization for Production

This guide details a step‑by‑step strategy for optimizing Druid in Spring Boot, covering environment setup, core pool parameters, monitoring, security hardening, leak detection, dynamic tuning, and common pitfalls to achieve high‑performance, stable, and secure database connections in production.

Connection PoolDruidsecurity

0 likes · 13 min read

Mastering Druid: Advanced Spring Boot Connection Pool Optimization for Production