Java backend, microservices, distributed systems, containerized programming, and more.
This article examines why excessive null‑checking clutters code, distinguishes when null is a valid response versus an error, and offers practical alternatives such as assertions, exceptions, returning empty collections, and the Null Object pattern to write cleaner, safer Java programs.
This article presents twelve practical techniques for dynamically modifying SpringBoot configuration values without restarting the application, ranging from simple @Value listeners to advanced solutions such as Nacos, Apollo, dynamic data sources, in‑memory maps, scheduled polling, event‑driven updates, and Spring Cloud Config, helping developers achieve flexible and resilient runtime configuration management.
This article introduces retrofit-spring-boot-starter, a lightweight HTTP client framework for Spring Boot that integrates Retrofit, detailing its core features, quick start guide, custom interceptors, connection pool management, logging, retry mechanisms, error decoding, global interceptors, circuit breaking, microservice calls, call adapters, data converters, and best practices for production use.
This article walks you through installing Multipass, launching and managing Ubuntu virtual machines on Windows, macOS, or Linux, covering commands for version checking, image selection, VM creation, inspection, shell access, pause/restart, deletion, and automated cloud‑init configuration.
This article walks through choosing MinIO for file storage, setting up the environment, integrating MinIO with Spring Boot, and implementing comprehensive file operations—including simple and batch uploads, downloads, previews, large file multipart uploads, and instant upload checks—complete with code examples and testing steps.
This article investigates the common belief that Java try‑catch blocks dramatically degrade performance, explains the JVM’s exception handling mechanism, shows bytecode differences with and without try‑catch, and presents benchmark results under various JVM compilation modes to reveal the true impact.
This guide explains how to integrate SpringDoc into a Spring Boot project to automatically generate OpenAPI 3 documentation, compares it with Swagger, shows minimal configuration steps, annotation usage, grouping techniques, and necessary adjustments for custom WebMvcConfigurer and Spring Security setups.
This article compares Spring Boot and Quarkus across architecture, startup speed, memory usage, CPU consumption, and native image generation, provides detailed test methodology and results, and offers practical guidance for migrating Java microservices to Quarkus.
A Java Spring application repeatedly stalled due to Redis connection pool deadlocks, and the investigation walks through using system tools, JVM thread dumps, and Arthas to pinpoint the issue, then shows how proper pool configuration and safe Redis access prevent the API from freezing.
This article explains how to design and implement a plugin architecture in Java, covering the standard ServiceLoader SPI, custom configuration‑driven loading, dynamic JAR loading with reflection, and Spring Boot's spring.factories mechanism, complete with practical code examples and diagrams.
