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.
This article compares Redis, Caffeine, and Ehcache for Spring Boot 3.5.0, explaining each cache's architecture, ideal use cases, configuration patterns with code examples, and trade-offs between in-process speed and distributed consistency, plus guidance on multi-level caching with JetCache.
This tutorial demonstrates how to use the open-source Sanitizer-Lib to automatically sanitize sensitive fields in Spring Boot 3.5 applications via the @Sanitize annotation, covering JSON deserialization, JPA persistence, built-in and custom sanitizers, and programmatic registry usage.
This article demonstrates how to use the OWASP Java HTML Sanitizer library to prevent DOM-based XSS attacks in Spring Boot applications, covering dependency setup, pre-packaged and custom sanitization policies, advanced preprocessors, and change listeners with complete code examples.
This article demonstrates how to implement per-endpoint dynamic field validation in Spring Boot 3.5.0 using a custom @DynamicValid annotation and HandlerMethodArgumentResolver, allowing flexible control over required, optional, and unknown fields for Map, JsonNode, or POJO parameters, with support for custom validators and integration with @Validated.
This article analyzes eight common API performance bottlenecks in Spring Boot applications, including N+1 queries, improper entity returns, missing indexes, JOIN FETCH pagination issues, in-memory filtering, deep pagination, long transactions, and caching strategies, with code examples and optimization techniques for each.
This article introduces Apache Fory, a high-performance multi-language serialization framework, and demonstrates its integration with Spring Boot 3.5.0, showing up to 3x throughput improvement over Jackson in JSON benchmarks with code examples for binary, JSON, and row-format serialization.
Apache Fesod (Incubating) is a high-performance, memory-efficient Java library for reading and writing Excel files, featuring streaming APIs, simple annotation-driven mapping, Spring Boot integration, and SXSSF-based large-file writing with optional temp-file compression.
This tutorial demonstrates how to use the Easy Random library to automatically generate realistic test data for Java objects, covering basic usage, configuration parameters, field-level customization, and custom randomizers for domain-specific values.
This article identifies five common MapStruct misuses — complex logic in @Mapping expressions, missing bidirectional relationship handling, over-mapping in hot paths, injecting business services into mappers, and naive PATCH updates — and shows correct Java alternatives for each case.
This article introduces json-masker, a lightweight (~60 KB) zero-dependency Java library for masking sensitive fields in JSON, demonstrating up to 11x higher throughput than Jackson-based approaches with support for JSONPath, streaming API, allowlist/blocklist modes, and customizable masking strategies.
