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Java Tech Workshop

Focused on Java backend technologies, sharing fundamentals, multithreading, JVM, the Spring ecosystem, microservices, distributed systems, high concurrency, source‑code analysis, and practical experience. Continuously delivers high‑quality original content, interview guides, and learning roadmaps to help Java developers progress from beginner to advanced, enhancing technical skills and core competitiveness.

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Latest from Java Tech Workshop

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Java Tech Workshop

Aug 7, 2026 · Backend Development

Mastering MyBatis-Plus IPage: A Unified Solution for Pagination and Full-Data Export

This article examines common pitfalls of MyBatis-Plus IPage pagination, explains why naive approaches like using two mapper methods or setting pageSize to Integer.MAX_VALUE cause performance and consistency issues, and presents a single‑SQL strategy with custom count handling, cursor streaming, and best‑practice configurations for seamless pagination and full‑data export.

BackendCursorFull Export

0 likes · 20 min read

Mastering MyBatis-Plus IPage: A Unified Solution for Pagination and Full-Data Export

Java Tech Workshop

Aug 4, 2026 · Databases

R2DBC vs JDBC: Choosing the Right Persistence for Reactive Spring Boot Projects

This article compares Spring Data JDBC and Spring Data R2DBC for Spring Boot 3.x/4.x projects, detailing setup, Maven dependencies, configuration, entity definitions, repository and service implementations, transaction handling, performance trade‑offs, and provides a hybrid approach that wraps JDBC calls in reactive Monos for WebFlux, helping developers decide which persistence layer best fits their reactive architecture.

Database AccessJDBCR2DBC

0 likes · 22 min read

R2DBC vs JDBC: Choosing the Right Persistence for Reactive Spring Boot Projects

Java Tech Workshop

Aug 3, 2026 · Backend Development

A Ready‑to‑Use Spring Boot Template for Seamless Third‑Party Integration

The article explains why ad‑hoc third‑party integrations quickly become unmaintainable, identifies four common pain points, and presents a layered architecture using template method, strategy and factory patterns that abstracts common concerns such as retries, logging and signing, dramatically reducing duplicated code and maintenance effort.

JavaSpring BootStrategy Pattern

0 likes · 20 min read

A Ready‑to‑Use Spring Boot Template for Seamless Third‑Party Integration

Java Tech Workshop

Aug 2, 2026 · Backend Development

Integrate OnlyOffice with Spring Boot in 5 Minutes for Online Word/Excel Editing

This guide shows how enterprise developers can quickly add full‑featured online Word, Excel and PPT editing to Spring Boot 4.x applications by deploying OnlyOffice via Docker, configuring JWT authentication, and implementing backend endpoints for file storage, editor configuration, and save callbacks.

Collaborative EditingDockerJWT

0 likes · 29 min read

Integrate OnlyOffice with Spring Boot in 5 Minutes for Online Word/Excel Editing

Java Tech Workshop

Jul 31, 2026 · Backend Development

Building a Pluggable LLM Gateway with Spring Boot

The article explains why enterprise applications need a unified large‑model gateway, outlines a layered architecture using Spring Boot 3.x, strategy pattern and interface‑driven design, and provides production‑grade features such as retry, circuit‑breaker, token accounting and easy addition of new model providers.

LLMOpenFeignResilience4j

0 likes · 19 min read

Building a Pluggable LLM Gateway with Spring Boot

Java Tech Workshop

Jul 30, 2026 · Backend Development

Managing Statutory Holidays in Enterprise Attendance with SpringBoot & Vue3

The article explains how to avoid common pitfalls in handling statutory holidays for enterprise attendance systems by building an independent work‑day calendar service, storing daily date types in a database, providing unified SpringBoot APIs for rule evaluation, and offering a Vue3 visual calendar for HR to maintain holidays, adjustments, and custom company holidays.

Holiday CalendarMyBatis-PlusSpringBoot

0 likes · 21 min read

Managing Statutory Holidays in Enterprise Attendance with SpringBoot & Vue3

Java Tech Workshop

Jul 29, 2026 · Backend Development

Why Spring Boot’s Built‑in StopWatch Is a Cleaner Way to Measure Execution Time

The article explains the drawbacks of manually using System.currentTimeMillis for multi‑stage timing, introduces Spring’s StopWatch utility from spring‑core, demonstrates its API and code examples, shows three common usage scenarios, warns about pitfalls, compares it with raw timers, and argues why Spring itself adopts StopWatch for concise, structured performance monitoring.

AOPJavaSpring

0 likes · 12 min read

Why Spring Boot’s Built‑in StopWatch Is a Cleaner Way to Measure Execution Time

Java Tech Workshop

Jul 28, 2026 · Fundamentals

Why Is AQS the Cornerstone of Java Concurrency?

The article explains how Java's AbstractQueuedSynchronizer (AQS) serves as the foundational framework for most JUC utilities by encapsulating state, a FIFO wait queue, and template methods, and demonstrates its design through detailed source analysis of ReentrantLock, Semaphore, CountDownLatch, and a custom latch.

AQSAbstractQueuedSynchronizerJava

0 likes · 17 min read

Why Is AQS the Cornerstone of Java Concurrency?

Java Tech Workshop

Jul 27, 2026 · Backend Development

Spring Boot + EasyExcel: High‑Performance, Elegant Excel Import/Export

This article explains why native Apache POI causes memory‑heavy, boilerplate Excel import/export code, introduces Alibaba's EasyExcel as a low‑memory, annotation‑driven alternative, and provides step‑by‑step Spring Boot examples for exporting, importing, custom conversion, validation, pagination, and template filling while highlighting common pitfalls and solutions.

EasyExcelExcel exportExcel import

0 likes · 15 min read

Spring Boot + EasyExcel: High‑Performance, Elegant Excel Import/Export

Java Tech Workshop

Jul 26, 2026 · Backend Development

Which Executes First in Spring Boot: Filter, Interceptor, or AOP?

The article explains the exact execution order of Spring Boot's Filter, Interceptor, and AOP layers, details the nine‑step request lifecycle, clarifies sorting rules, outlines common pitfalls, and provides guidance on choosing the right component for specific scenarios.

AOPExecution OrderInterceptor

0 likes · 15 min read

Which Executes First in Spring Boot: Filter, Interceptor, or AOP?