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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 article explains how to replace numerous static Feign client interfaces with a single dynamic Feign client that can invoke any microservice endpoint at runtime by specifying the service name, URL, and parameters, simplifying code and reducing boilerplate in Spring Cloud applications.
Spring Cloud 2025.0.0 "Northfields" was released on May 29, 2025, fully compatible with Spring Boot 3.5.0, bringing major enhancements to core microservice components, new Gateway features, Config AWS‑S3 support, Kubernetes config source integration, CircuitBreaker reactive isolation, Eureka client upgrades, and a detailed upgrade guide for developers.
This guide explains how to build a Nacos service cluster, configure providers and consumers, write the necessary Spring Cloud Nacos YAML and Java controller code, detail the steps for setting up multiple Nacos nodes, and troubleshoot typical startup errors.
This article explains how to implement gray (canary) release in a Spring Cloud project using Nacos for service discovery, custom request headers, ThreadLocal gray flags, Spring Cloud Gateway filters, custom Ribbon load balancer rules, and provides full code snippets, configuration steps, and deployment instructions.
This guide walks through a complete one‑click Jenkins pipeline that pulls Spring Cloud source code from Git, builds it with Maven, packages the JAR into a Docker image, pushes the image to a registry, and finally deploys or updates the service on Kubernetes, covering SSH‑key setup, pipeline scripting, and Kubernetes resource definitions.
This article explains how Spring Cloud automatically wraps managed thread pool beans with trace-enabled proxies to preserve distributed tracing information, details the ExecutorBeanPostProcessor implementation, shows the relevant configuration and instrumentation code, and notes that manually created executors must be wrapped manually.
This article explains why and how to enforce the use of trace‑aware thread pools in Spring Cloud, presenting three approaches—including TraceableExecutorService, Tracer.currentTraceContext().wrap, and TraceCallable/TraceRunnable—to prevent loss of distributed tracing information in multithreaded applications.
This article demonstrates how to use the Adapter pattern to abstract multiple OSS providers such as MinIO and Aliyun in a Spring microservice, configure the concrete adapters via Nacos dynamic configuration, and expose a unified upload API through a service and controller layer, complete with deployment and testing steps.
This article introduces a free collection of programmer books and provides a detailed comparison of several Java microservice frameworks—including Spring Cloud, Vert.x, SparkJava, Micronaut, Javalin, and Quarkus—covering their resource consumption, startup times, memory usage, and suitability for lightweight or heavy‑weight applications.
This article explains the concept, advantages, design choices, and step‑by‑step implementation of a multi‑tenant architecture using Spring Boot and Spring Cloud, covering database design, tenant isolation, dynamic routing, and deployment scenarios for SaaS and enterprise applications.
This article describes how to build a lightweight service registry using Eureka Server that also acts as a client, enabling a task dispatcher to discover and load‑balance task executor instances without deploying a separate registry, including Maven dependencies, Spring annotations, Feign client definitions, and troubleshooting steps.
This article explains the concepts, advantages, design choices, database strategies, and step‑by‑step implementation of a multi‑tenant system using Java Spring Boot and Spring Cloud, including code samples for data sources, dynamic routing, and tenant management in cloud environments.
This article walks you through configuring Spring Cloud for dynamic property updates, covering dependency setup, enabling bootstrap, defining configuration properties, exposing a refresh endpoint, and listening to EnvironmentChangeEvent, all illustrated with complete code snippets and screenshots.
This article details a week‑long investigation of intermittent Nacos service deregistration in a Spring Cloud Alibaba microservice environment, describing the background architecture, multiple hypothesis tests, diagnostic commands, kernel version mismatch, and the final fix by upgrading the Linux kernel.
This article explains how to build a highly available distributed e‑commerce system by using load‑balancing, redundant servers, rate‑limiting techniques, circuit‑breaker patterns, and graceful degradation methods, and provides concrete Spring Cloud and Java code examples for each strategy.
This article explains the concept, advantages, and technical choices of multi‑tenant architecture, then details a design using Spring Boot and Spring Cloud, covering database strategies, deployment isolation, tenant management, code examples, and step‑by‑step implementation for SaaS applications.
This article explains the purpose and inner workings of Spring Boot's @RefreshScope annotation, showing how it creates proxy and target beans, the proxy generation process, and how the /actuator/refresh endpoint triggers a full refresh of scoped beans at runtime.
Spring Cloud 2024.0.0 (Moorgate) has been released, built on Spring Boot 3.4.0, introducing enhancements across Gateway, CircuitBreaker, OpenFeign, Commons, Config, and Kubernetes modules, along with performance improvements, new configuration options, and a quick-start guide showing Maven dependency management for the updated platform.
This article explains how to streamline OpenFeign usage during local development by configuring custom URL routing, detailing the underlying Feign mechanism, creating a custom ImportBeanDefinitionRegistrar, and providing step‑by‑step code examples, testing procedures, and best‑practice recommendations.