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Spring Full-Stack Practical Cases
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Spring Full-Stack Practical Cases

Full-stack Java development with Vue 2/3 front-end suite; hands-on examples and source code analysis for Spring, Spring Boot 2/3, and Spring Cloud.

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Recent Articles

Latest from Spring Full-Stack Practical Cases

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Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Jun 23, 2026 · Backend Development

One Bad Log Can Halve Spring Boot Throughput – How to Log Without Losing Performance

The article explains why effective logging is crucial for Java applications, compares proper and improper logging practices with SLF4J and Logback, and provides fourteen concrete best‑practice guidelines—including correct logger setup, level usage, placeholders, asynchronous and structured logging—to avoid performance degradation and security risks.

JavaLogbackSLF4J
0 likes · 14 min read
One Bad Log Can Halve Spring Boot Throughput – How to Log Without Losing Performance
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Jun 23, 2026 · Backend Development

Stop Writing Manual if‑else: Master Spring Boot Partial Updates with @JsonMerge

This article explains how to avoid null‑overwrites during partial updates in Spring Boot by using Jackson's @JsonMerge annotation, demonstrates handling of nested objects and null values with @JsonSetter, and shows how to create a custom @JsonMergePatch argument resolver for clean controller code.

@JsonMergeArgument ResolverJackson
0 likes · 9 min read
Stop Writing Manual if‑else: Master Spring Boot Partial Updates with @JsonMerge
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Jun 22, 2026 · Backend Development

Why Prefer @Bean Over @Component? Avoid Critical Spring Boot Pitfalls

The article explains the fundamental differences between @Component and @Bean in Spring Boot 3.5.0, demonstrates how @Bean provides finer control, solves five common configuration problems, and reveals a subtle proxy‑related bug that causes multiple bean instances when @Component is misused on configuration classes.

BeanComponentConfiguration
0 likes · 8 min read
Why Prefer @Bean Over @Component? Avoid Critical Spring Boot Pitfalls
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Jun 21, 2026 · Backend Development

Spring Boot + Yauaa: Ultra‑Precise Parsing of Client Device, OS, and Browser Info

This article walks through using the Yauaa library in Spring Boot 3.5.0 to extract detailed client‑side information—device class, operating system, and browser—from the User‑Agent header, covering basic bean setup, advanced cache configuration, field selection, and device‑based routing examples.

Cache ConfigurationDevice DetectionJava
0 likes · 8 min read
Spring Boot + Yauaa: Ultra‑Precise Parsing of Client Device, OS, and Browser Info
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Jun 21, 2026 · Backend Development

Beyond Vibe Coding: A Deep Dive into OpenSpec Spec‑Driven Development

This article explains why Vibe Coding reaches its limits for large projects, introduces Spec‑Driven Development with OpenSpec, walks through installing the tool, using its opsx commands, creating specification documents, applying code generation, and archiving the results in a Spring Boot 3.5.0 application.

AI-assisted codingOpenSpecOpsx commands
0 likes · 12 min read
Beyond Vibe Coding: A Deep Dive into OpenSpec Spec‑Driven Development
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Jun 20, 2026 · Backend Development

Four Advanced Spring Boot Solutions to Eliminate @JsonIgnore and Resolve JSON Recursion

When bidirectional JPA entities cause infinite JSON recursion in Spring Boot, the article explains why @JsonIgnore is suboptimal and demonstrates four advanced alternatives—@JsonIgnoreProperties, @JsonManagedReference/@JsonBackReference, the Jackson Hibernate module, and @JsonIdentityInfo—each with code samples and runtime results.

@JsonIgnorePropertiesHibernateJSON recursion
0 likes · 7 min read
Four Advanced Spring Boot Solutions to Eliminate @JsonIgnore and Resolve JSON Recursion
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Jun 20, 2026 · Backend Development

No Third‑Party Dependencies: Build a Custom Spring Boot Dynamic Decryption Component

The article explains how to protect database passwords and API keys in Spring Boot 3.5.0 by implementing a lightweight, third‑party‑free dynamic decryption component that encrypts values with AES, stores them with a {cipher} prefix, and decrypts them at pre‑refresh using a custom ApplicationContextInitializer.

AESConfiguration SecurityDynamic Decryption
0 likes · 8 min read
No Third‑Party Dependencies: Build a Custom Spring Boot Dynamic Decryption Component
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Jun 19, 2026 · Backend Development

Java Pooling Under High Concurrency: Resource Reuse and Performance Optimization

The article explains Java pooling techniques for high‑concurrency scenarios, introduces Apache Commons Pool 2, demonstrates how to configure dependencies, implement a PooledObjectFactory, create custom eviction policies and statistics, and shows a complete runnable example that highlights resource reuse and performance gains.

JavaPerformance optimizationSpring Boot
0 likes · 8 min read
Java Pooling Under High Concurrency: Resource Reuse and Performance Optimization
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Jun 19, 2026 · Artificial Intelligence

How Spring AI’s Dynamic Tool Discovery Cuts Token Usage by 34%‑64%

The article explains how Spring AI’s recursive advisors enable dynamic tool discovery, replacing the traditional all‑tools‑in‑prompt approach, thereby reducing token consumption by 34%‑64% while preserving access to hundreds of tools, and provides benchmark data, code examples, and configurable search strategies.

Dynamic Tool DiscoveryJavaLLM
0 likes · 11 min read
How Spring AI’s Dynamic Tool Discovery Cuts Token Usage by 34%‑64%