1 views collected around this technical thread.
This article explains a puzzling Spring Boot transaction rollback caused by MyBatis-Plus's saveBatch method, reproduces the error with nested @Transactional calls, analyzes why the rollback flag is set, and offers a practical workaround by replacing the framework batch operation with a custom mapper implementation.
This guide shows how to integrate Spring Boot with the Model Context Protocol (MCP) to let large language models interact with existing services via natural language, covering entity definitions, Maven dependencies, configuration, tool annotations, and testing to create an AI‑enabled book management API.
This article walks through designing, deploying, and executing a multi‑level leave‑approval workflow using the Activiti BPM engine, covering BPMN diagram creation, Spring Boot configuration, Java code for process initiation and task handling, database tables, key services, and best‑practice development steps.
This tutorial shows how Java developers can use the magic‑api framework to rapidly create Spring Boot CRUD APIs without writing Controllers, Services, or DAOs, covering Maven setup, configuration, database schema, code‑free endpoint design, validation, transactions, Swagger integration, and deployment.
Learn how to replace plain‑text passwords in Spring Cloud’s Nacos configuration with encrypted values by extending NacosConfigProperties, overriding its initialization, and registering a custom bootstrap auto‑configuration, ensuring your application complies with corporate security policies.
This tutorial walks through designing a QR‑code login flow, defining a token table, outlining client and server roles, implementing two REST endpoints, configuring Spring Boot WebSocket support, and handling real‑time login notifications with Java and JavaScript code examples.
This article explains why multiple independent login systems hurt user experience and security, reviews traditional session mechanisms and their limitations in clustered environments, and then presents two session‑sharing strategies and a complete CAS‑based SSO solution with Java code examples.
Concept Plugin 2 introduces a lightweight, annotation‑driven plug‑in system for Spring Boot that separates core business logic from device integration code, enabling independent testing, dynamic loading, and easy configuration through a management UI, while supporting various injection patterns, nested dependencies, and Spring features.
This article reveals how common bad coding practices such as over‑engineering, hidden business logic in utility classes, deep inheritance trees, excessive DTO layers, unnecessary interfaces, and contract‑less microservices degrade team efficiency and project quality, and offers concrete, principle‑driven remedies.
This article introduces Jolt, an open‑source Java library for JSON‑to‑JSON transformation, explains its advantages over traditional hard‑coded conversion, demonstrates core operations and custom extensions with code examples, shows how to integrate it into Spring Boot, and outlines future plans for a visual drag‑and‑drop configuration tool.
This article revisits Java's enum type, explaining its definition, constructors, methods, and practical uses such as replacing if/else logic, implementing interfaces, enhancing type safety, and applying enums in switch statements and singleton patterns, complete with code examples and best‑practice tips.
The author shares a personal journey from early backend work to full‑stack responsibilities, critiques heavyweight admin frameworks, and explains how they rebuilt a lightweight enterprise admin using MyBatisPlus, Lombok, and streamlined architecture, while outlining future enhancements such as email, payment, multi‑tenant, and distributed scheduling.
This tutorial walks you through building a Spring Boot project that uses the easy-data-scope library to inject dynamic SQL for fine‑grained data permissions, covering database setup, Maven dependencies, core annotations, custom rule implementation, and practical query examples.
This comprehensive guide explains the Java Stream API, covering its purpose, creation methods, intermediate and terminal operations, and the Optional class, with clear examples and code snippets to help developers write cleaner, more efficient functional-style code.
This step‑by‑step guide shows how to create an IntelliJ IDEA project, import a Java module into it, associate the module with the project, and then package the application into a JAR file using the IDE’s Project Structure and Artifacts settings.
This article explains the motivations behind creating a new distributed scheduling framework, compares existing solutions, and details the design choices—including gRPC communication, protobuf serialization, a custom NameServer for load balancing, and a built‑in message queue with persistence and retry mechanisms—to handle frequent task creation and dynamic parameter changes in a high‑concurrency environment.
This article walks you through creating a reusable BaseController using MyBatisPlusPro, including dependency setup, utility methods for reflection, a generic CRUD controller, pagination configuration, and how to extend it in your own Spring Boot applications.
This article explains why Kafka consumers often become bottlenecks—due to complex processing, resource constraints, or sub‑optimal configuration—and provides concrete steps such as profiling Java code, simplifying logic, using background threads, scaling consumer instances, and tuning key consumer parameters.
This article explains the necessity of batch processing, presents typical use cases such as daily interest calculation, e‑commerce order archiving, log analysis and medical data migration, then dives deep into Spring Batch's core components, provides step‑by‑step code examples, performance‑tuning tips, production‑grade fault‑tolerance, monitoring solutions and a comprehensive FAQ.
Java monitors provide a mechanism for thread synchronization by associating each object with a monitor lock, comprising an entry list, owner thread, and wait set, and the article explains their structure, thread state transitions, and demonstrates usage with a practical code example.