This article explains how to build a Spring Cloud‑based microservice framework and add full‑stack log traceability by generating a traceId, propagating it via MDC and interceptors, and visualizing the linked logs through ELK, covering both intra‑process and inter‑service scenarios.
This article explains how to use Alibaba Cloud's Microservice Insight to quickly locate which Spring MVC controller processes a specific request in a Spring Cloud environment, covering demo setup, DispatcherServlet internals, rule configuration, and real‑time stack trace collection.
Spring Cloud Tencent 1.7 introduces support for Spring Cloud Hoxton, 2020, and 2021, provides a detailed version list and numbering scheme, and adds major features such as service governance plugins, dynamic configuration improvements, monitoring enhancements, and extended Polaris integration, with links to documentation and repositories.
The article explains why Spring Cloud remains the dominant Java microservice framework, introduces Tencent’s open‑source Polaris‑based Spring Cloud Tencent as a one‑stop cloud‑native solution, and details its discovery, configuration, routing, rate‑limiting, and circuit‑breaker modules, while outlining future plans and how developers can contribute.
Spring Cloud 2021.0.4 (Jubilee) builds on Spring Boot 2.7.x and introduces updates such as JSCH‑based SSH configuration for Config, native JSON support for GRPC filters in Gateway, binary encoding rewrite in OpenFeign, the ability to disable Resilience4J thread‑pool defaults in Circuitbreaker, and various dependency upgrades.
This article explains how to use a non‑intrusive microservice insight capability to dynamically log and observe Ribbon load‑balancing internals, capture service discovery data, and troubleshoot full‑link gray‑release traffic issues in Spring Cloud environments.
This article systematically explains enterprise‑level microservice governance and development, covering market‑driven challenges, evaluation criteria, a comparison of Dubbo, Spring Cloud, and Istio, and design principles such as Conway's Law to help organizations modernize their applications efficiently.
This article provides a comprehensive overview of Spring Cloud’s microservice ecosystem, explaining core components such as Eureka, Ribbon, Feign, Zuul, Hystrix, and Config, and comparing them with alternatives like Dubbo and ZooKeeper, while illustrating practical e‑commerce use cases.
This article provides a detailed overview of Spring Cloud fundamentals, including microservice architecture, core components, service discovery, load balancing, circuit breaking with Hystrix, differences between Eureka and Zookeeper, and practical usage of Ribbon, Feign, and Spring Cloud Bus, aimed at helping developers prepare for interview questions.
This article outlines common Feign issues such as 400 Bad Request, illegal character errors, Chinese garbled text, multiple @RequestBody parameters, and read timeouts, and provides clear code‑based solutions and configuration tips for each problem.
This tutorial walks through implementing login authentication using Spring Cloud Gateway and JWT, covering core concepts of authentication, authorization, credential handling, token generation, gateway validation, service integration, and token refresh strategies within a microservice architecture.
This article provides an in‑depth overview of microservice concepts, RPC frameworks, serialization methods, distributed transaction models, CAP and BASE theories, monitoring solutions, high‑availability strategies, load‑balancing techniques, configuration management, service registration/discovery, and Dubbo fault‑tolerance clusters, offering practical examples and code snippets for Java‑based cloud native systems.
This article explains Nacos's architecture, the principles of service registration, how Spring Cloud integrates Nacos via auto‑configuration, the implementation of NacosServiceRegistry, heartbeat mechanisms, registration workflows, provider address queries, and the dynamic service address perception using subscription and HostReactor.
This article explains how to integrate JWT-based login authentication into a Spring Cloud micro‑service architecture using Spring Cloud Gateway, detailing the authentication flow, token generation, gateway validation, service‑side user handling, and token refresh strategies with practical code examples.
This tutorial demonstrates how to implement inter‑service communication in Spring Cloud using RestTemplate and Feign, covering project setup, bean configuration, three RestTemplate invocation patterns, load‑balancing with Ribbon, and switching strategies via code or configuration files.
This tutorial explains how to centralize URL‑level authentication in a Spring Cloud Gateway by integrating Spring Security OAuth2 Resource Server, defining custom authorization managers, handling token errors, forwarding JWT claims to downstream services, and configuring the gateway with YAML and Java code examples.
This article explains the role of an API gateway in microservice architectures, details why Spring Cloud Gateway is chosen, describes its workflow, predicates, filters, dynamic routing, and demonstrates token authentication with code examples, helping developers integrate a unified entry point for their services.
The article presents a Spring Cloud micro‑service solution that combines pluggable warm‑up modules and delayed deregistration to ensure graceful startup and shutdown, preventing premature object destruction, late offline calls, and early registration, thereby achieving over 99.99 % deployment success and stable request latency.
This article explains how Spring Cloud Tencent enables multi‑test environment routing by using service instance tagging, traffic staining, and Polaris‑based service routing, providing step‑by‑step guidance for developers to configure plugins, label instances, and apply request‑level tags for efficient microservice testing.
This article investigates why Eureka's delayed registration feature often fails, analyzes the underlying code paths and configuration parameters, and provides step‑by‑step verification and configuration adjustments to ensure the delayed registration works as intended.
This article provides a comprehensive overview of Spring Cloud, explaining its core modules such as Eureka, Zuul, Ribbon, Hystrix, Feign, and Config, and compares popular service‑registry solutions while offering practical guidance for building robust microservice architectures.
This article provides a comprehensive overview of Spring Cloud’s microservice architecture, detailing core components such as Eureka, Zuul, Ribbon, Hystrix, Feign, and Config, comparing registration centers like Nacos, ZooKeeper, Consul, and Etcd, and discussing best practices for service discovery and API gateway design.
The article examines the evolution from monolithic to distributed architectures, compares Spring Cloud, Kubernetes, and Istio, explains how service mesh and sidecar proxies enable language‑agnostic microservices, and argues that Kubernetes‑based solutions increasingly surpass Spring Cloud in flexibility, scalability, and operational independence.
This guide explains how to add a traceId to logs in a Spring Cloud microservice architecture by using MDC, configuring Logback, creating interceptors, and propagating the trace across services so that logs can be correlated and visualized via ELK Stack.
This article compares Nacos and Apollo configuration centers, examining their security models, environment isolation mechanisms, and architectural complexity, and concludes that Nacos offers a simpler and potentially safer solution for microservice deployments.
This article provides a detailed analysis of Nacos as a service registry, covering its architecture, registration and discovery processes, health‑checking, Raft‑based consistency, Spring Cloud integration, and practical code examples for developers building micro‑service systems.
This article explains how to use MDC to generate and propagate a traceId across Spring Cloud microservices, configure Logback to output the traceId, and leverage ELK Stack for log aggregation, enabling comprehensive request‑level log tracing both within and across services.
This article examines the challenges of microservice authorization and reviews common authentication solutions such as CAS SSO, distributed sessions with gateways, client‑token approaches, and finally proposes a Spring Cloud architecture combining Spring Security, OAuth2, JWT and Zuul for unified access control.
This article explains why Spring Cloud Tencent remains a mainstream Java micro‑service solution, introduces its one‑stop Polaris suite—including service registration & discovery, configuration center, routing, rate limiting and circuit breaking—and outlines future plans and community involvement.
This article explains what Eureka is, describes its core concepts such as registration, renewal, fetching registries, cancellation and eviction, and provides step‑by‑step instructions with code to set up a Eureka server, a service provider and a consumer using Spring Cloud, illustrating load‑balancing and cache‑refresh behavior.
This article introduces Spring Cloud Tencent, Tencent’s open‑source microservice solution built on Polaris, and walks through installing Polaris, adding service discovery, configuration management, rate limiting, routing, and circuit‑breaker features with detailed Maven dependencies and YAML configurations, plus code examples for each step.
The article explains that CompletableFuture offers paired asynchronous methods—one using the default ForkJoinPool and another accepting a custom executor—and argues that providing an explicit thread pool avoids shared‑pool contention, loss of tracing information, ThreadLocal leakage, and class‑loader issues in Java backend applications.
This article demonstrates how to migrate a Spring Cloud microservice architecture from Eureka to Nacos using a dual‑registration/dual‑subscription model, covering configuration changes, code adjustments, graceful shutdown, load‑balancing behavior, and step‑by‑step deployment procedures.
This article explores practical solutions for implementing a distributed WebSocket cluster in a Spring Cloud environment, detailing the challenges of session sharing, comparing Netty and Spring WebSocket approaches, and presenting two strategies—session broadcasting and consistent‑hashing—along with gateway configuration, load‑balancing, and code examples.
This article explains how to implement a custom PropertySourceLocator in Spring Cloud Alibaba, detailing the necessary spring.factories configuration, core classes like NacosConfigBootstrapConfiguration and NacosPropertySourceLocator, and the process of obtaining ConfigService, loading shared, extended, and application configurations from Nacos.
This article analyzes why Eureka’s default three‑level caching causes slow service deregistration, calculates the worst‑case detection time, and provides configuration tweaks to dramatically shorten the shutdown latency in Spring Cloud microservices.
This article examines the evolution from monolithic applications to distributed micro‑service architectures, comparing Spring Cloud and Kubernetes (including Istio), discussing their respective strengths, integration possibilities, and the value of service mesh in modern cloud‑native deployments.
This article examines the evolution from a single monolithic application to distributed clusters, compares Spring Cloud with Kubernetes and Istio, discusses replacing Spring Cloud components with a service mesh, and highlights the benefits of sidecar proxies and language‑agnostic microservice architectures.
This article examines the evolution from monolithic applications to distributed micro‑service architectures, compares Spring Cloud with Kubernetes and Istio, discusses the role of Spring Boot on K8s, and explains the value of Service Mesh and sidecar proxies for decoupling business logic from infrastructure.
This article explains how to shift authentication and authorization from the gateway to downstream Spring Cloud microservices by removing the gateway's ReactiveAuthorizationManager, defining three custom annotations (@RequiresLogin, @RequiresPermissions, @RequiresRoles), creating an AOP aspect to enforce them, and demonstrating their usage in controller methods.
The article explains the challenges of authentication in microservice architectures and compares several solutions—including CAS single sign‑on, distributed session with Redis, client‑side token with JWT, and a recommended Spring Cloud + Spring Security + OAuth2 + JWT approach—detailing their workflows, advantages, and drawbacks.
This article explains how to achieve graceful shutdown of Spring Cloud services using shutdown hooks, /shutdown, /pause, and /service‑registry endpoints, demonstrates EurekaAutoServiceRegistration for controlled deregistration, and compares deployment patterns such as blue‑green, rolling, and canary releases to maintain uninterrupted user experience.
This comprehensive guide walks through Spring’s fundamentals—including IoC, DI, core modules, common annotations, AOP concepts, transaction management, MVC workflow, and Spring Boot auto‑configuration—while also covering advanced topics such as bean lifecycle, circular dependencies, proxy mechanisms, and an introduction to Spring Cloud.
This article explains Spring Cloud's role in building distributed micro‑service systems, illustrates an e‑commerce order‑payment scenario, and details the core components Eureka, Feign, Ribbon, Hystrix, and Zuul, showing how they work together for service registration, discovery, load balancing, fault tolerance, and API routing.
This article provides a comprehensive analysis of Ribbon, the client‑side load‑balancing component of Spring Cloud Netflix, covering its role in microservice calls, core modules, source‑code walkthroughs, health‑check mechanisms, zone‑aware strategies, and real‑world production configuration.
This article provides a step‑by‑step guide on configuring a Eureka service registry on a Linux server, creating deployment scripts, setting up Jenkins to pull the Eureka JAR from Git, and editing the Spring Cloud configuration file for proper operation.
This article explains how Spring Cloud automatically wraps container‑managed thread pool beans with tracing proxies to preserve distributed‑trace information, details the ExecutorBeanPostProcessor implementation, shows the relevant code for detecting and instrumenting executors, and notes when manual wrapping is required.
This article explains the role of Eureka as a service registry in Spring Cloud, describing its functions, architecture, components such as Eureka Server and client, and how it enables service registration, discovery, load balancing, and fault tolerance for microservices.
This article outlines Huolala's journey through five architectural stages—monolith, RPC, SOA, microservices, and service mesh—detailing the motivations, challenges, and technical choices such as Dubbo, Spring Cloud, and Istio that shaped its high‑availability, cloud‑native backend platform.
This article explains how to achieve elegant service shutdown and various gray‑release strategies—including /shutdown, /pause, /service‑registry endpoints and EurekaAutoServiceRegistration—while also covering blue‑green, rolling, and canary deployments for zero‑downtime upgrades.
This article dissects the inner workings of OpenFeign within Spring Cloud, explaining how @EnableFeignClients triggers bean registration, how FeignClientsRegistrar and related configuration classes create BeanDefinitions, and how the FeignBuilder ultimately generates dynamic proxy instances for Feign clients.
The article explains why a Spring Cloud project upgraded from Java 8 to Java 11 gets stuck during Maven compilation, shows how to enable detailed compiler logs with Maven‑compiler‑plugin settings, presents the lengthy compilation output, and advises cautious use of Lombok’s @Builder.Default to avoid similar hangs.
This article explains how to achieve graceful service shutdown and various deployment techniques such as blue‑green, rolling, and canary releases using Spring Cloud, Eureka, and related actuator endpoints, providing code examples and practical guidance for maintaining uninterrupted user experience during upgrades.
This article explains how to perform graceful service shutdowns and various deployment techniques—including /shutdown, /pause, and /service‑registry endpoints, EurekaAutoServiceRegistration, blue‑green, rolling, and canary deployments—using Spring Cloud to ensure zero‑downtime upgrades and smooth traffic migration.
This guide walks you through setting up distributed logging for microservices using Spring Cloud Sleuth for tracing, Zipkin as the tracing server, and the ELK stack for log collection and visualization, covering configuration, code examples, and log querying.
This article explains several graceful shutdown methods for Spring Cloud services, including using kill PID, the /shutdown, /pause, and /service‑registry actuator endpoints, compares their effectiveness, and provides configuration examples to achieve minimal downtime during service upgrades.
This article explains the Nacos architecture, the principles of service registration and discovery, and how Spring Cloud integrates with Nacos through auto‑configuration, heartbeat mechanisms, and dynamic address updates, providing a comprehensive guide for building cloud‑native microservices.
This article explores practical approaches for building a distributed WebSocket cluster in a Spring Cloud environment, covering session handling, Netty versus Spring WebSocket implementations, session broadcasting, consistent‑hash routing, gateway configuration, Ribbon limitations, and provides code examples for each solution.
This article recounts how a two‑person SaaS team evolved its architecture from a monolithic Java application to a suite of over ten Spring Cloud microservices, detailing RESTful API design, CI/CD pipelines with Jenkins, Docker containerization, Kubernetes integration, link tracing, and operational monitoring.
This guide explains how to set up distributed logging for microservices using Spring Cloud Sleuth for tracing, Zipkin as a trace UI, and the ELK stack (Elasticsearch, Logstash, Kibana) for log collection, storage, and visualization, including detailed configuration and code examples.
This article explains how Spring Cloud OpenFeign simplifies remote service calls by using Java dynamic proxies, walks through its initialization process, annotation parsing, and shows concrete code examples that illustrate the creation of proxy objects and method handlers.
This tutorial walks you through OpenFeign in Spring Cloud, explaining its purpose, differences from Feign, setup steps, various parameter passing methods, timeout handling, logging enhancement, HTTP client replacement, GZIP compression, and circuit‑breaker integration with Sentinel, all illustrated with code snippets and diagrams.
The article explains that adding Spring Cloud's @RefreshScope annotation to beans annotated with @Service or @Component makes the bean definition synthetic, causing Spring's BeanPostProcessor to skip those beans and leading to processing failures.
This article explains the internal architecture of Nacos, its core components, the registration principles of service instances, how Spring Cloud integrates Nacos through the ServiceRegistry interface and auto‑configuration, and the mechanisms for heartbeat, data consistency, and dynamic service discovery in a cloud‑native backend environment.
This article explains how to achieve gray (canary) release across multiple environments by using Spring Cloud LoadBalancer in Spring Cloud Gateway, configuring service metadata and request headers to route traffic to specific instances, and provides two implementation approaches with full code examples.
This article explains the Nacos architecture, including its provider, consumer, name server, and server components, and details how Spring Cloud integrates with Nacos for service registration, heartbeat monitoring, and dynamic service discovery using Open API, SDK, and Raft-based consistency protocols.
This article explains why and how to extend Spring Security with custom OAuth2 grant types, using a mobile‑password example that demonstrates creating a custom UserDetailService, AuthenticationToken, TokenGranter, AuthenticationProvider, and the necessary Spring Cloud configuration steps.
The article introduces Spring Cloud 2021.0.1, providing the updated Maven dependency snippet, a detailed list of module version upgrades, compatibility tables with Spring Boot, and highlights new features in Spring Cloud Gateway, OpenFeign, and Sleuth, while also offering PDF resources for deeper learning.
Spring Cloud 2021.0.1, the first bug‑fix release of the 2021 line, introduces new routing predicates, configurable gateway handler order, OpenFeign 11.8 updates, Config file matcher fixes, and a comprehensive module version upgrade list, all available via the central Maven repository.
This article reviews several Java micro‑service frameworks—including Spring Cloud, Vert.x, SparkJava, Micronaut, Javalin, and Quarkus—by describing their features, resource consumption, and simple load‑test results, and provides numerous Spring Boot learning resources for developers seeking lightweight alternatives.
This article explores microservice communication, comparing monolithic and microservice architectures, introduces gateway-based communication methods, details gateway functions and use cases like blue‑green deployment and circuit breaking, and provides a step‑by‑step Zuul implementation with configuration and code examples.
This article explains why and how to aggregate Swagger API documentation across multiple Spring Cloud microservices by creating a reusable swagger‑starter, configuring each service, and implementing a GatewaySwaggerResourcesProvider to expose a unified documentation entry point.
This article compares several Java microservice frameworks—including Spring Cloud, Vert.x, SparkJava, Micronaut, Javalin, and Quarkus—by describing their features, resource consumption, and performance test results, highlighting the trade‑offs between heavyweight and lightweight solutions for small‑to‑medium services.
This article reviews the Spring Cloud 2022.0.0-M1 milestone release, highlighting its compatibility with Spring Boot 3, key component removals, OAuth integration updates, annotation changes, and future plans for Spring Cloud Netflix, while directing readers to the official release notes for full details.
This article explains how to design and implement a microservice‑based PaaS platform using Docker containers, Spring Cloud Netflix components such as Zuul, Eureka, and Hystrix, covering service gateway routing, registration and discovery, deployment, fault tolerance, and dynamic configuration.
This tutorial walks through the fundamentals of service registration and discovery in microservice architectures, comparing Eureka, Zookeeper, Consul, and Etcd, and provides step‑by‑step Spring Cloud implementations for both Eureka and Consul with code samples and configuration details.
This article provides a step‑by‑step tutorial on integrating Nacos as a service discovery registry and dynamic configuration center for Spring Cloud microservices, covering dependency setup, server installation, service registration, configuration management, namespaces, groups, and multi‑config sets with live refresh capabilities.
This tutorial walks through the fundamentals of microservices, setting up a Spring Cloud project with Eureka service registry, configuring server and client modules, implementing load‑balanced calls using Ribbon and Feign, and achieving high availability with multiple Eureka instances, all illustrated with code snippets and configuration files.
This article outlines the first, second, and HR interview rounds for a CCBank online position, detailing over thirty technical and behavioral questions covering Elasticsearch, Redis, Spring Cloud, JVM, data structures, performance optimization, and candidate queries, followed by a concise summary.
This article explains how to achieve token relay across microservice calls in Spring Cloud by manually propagating JWT tokens using OpenFeign, addressing challenges with circuit breaker sub‑threads, and leveraging RequestContextHolder with InheritableThreadLocal, accompanied by complete Java code examples.
This article explains how Feign (and OpenFeign) simplifies remote service calls in Spring Cloud by scanning @FeignClient interfaces, generating dynamic proxies, parsing MVC annotations, integrating with Ribbon for load balancing, and handling request/response processing, illustrated with step‑by‑step code examples and diagrams.
This article explains the TCC (Try‑Confirm‑Cancel) transaction model, its three practical variants, common pitfalls such as empty rollbacks, idempotency and hanging, and provides step‑by‑step Java code examples for integrating Seata TCC into a Spring Cloud micro‑service order system.
This article explains how to implement a Role‑Based Access Control (RBAC) permission model in Spring Cloud Gateway, covering the design, loading URL‑role mappings into Redis, customizing UserDetailsService, and integrating OAuth2.0 with code examples and database schema.
This article explains how to invalidate JWT tokens during password changes, permission updates, or logout by using a Redis-backed blacklist approach in Spring Cloud Gateway, detailing the extraction of the token's jti, gateway filtering, downstream modifications, and a logout endpoint implementation.
This guide explains how to set up distributed logging for microservices using Spring Cloud Sleuth, Zipkin, and the ELK stack, covering dependency configuration, service registration, Logstash and Kibana setup, logback-spring.xml customization, and log querying to trace inter‑service calls.
This article demonstrates how to build a unified authentication and authorization solution by integrating Spring Cloud Gateway with OAuth2.0, covering architecture design, service setup, JWT token handling, custom authentication and authorization managers, Redis-based permission management, and end‑to‑end testing steps.
This article provides a comprehensive tutorial on creating Spring Cloud microservices, covering the fundamentals of microservice architecture, project initialization with Maven and IntelliJ, configuring Eureka registration servers, implementing service providers and consumers, using Ribbon and Feign for load‑balanced calls, and setting up high‑availability Eureka clusters.
Spring Cloud 2020.0.5, a bug‑fix release compatible with Spring Boot 2.4.x and 2.5.x, is now available from the central repository, and includes updated dependencies, component version tables, and detailed changelogs for modules such as Netflix, Config, Gateway, Kubernetes, OpenFeign, Sleuth, and Vault.
This article explains Nacos's architecture, the principles of service registration, how Spring Cloud integrates Nacos during startup, the implementation details of NacosServiceRegistry, heartbeat mechanisms, and dynamic service address discovery, providing a comprehensive guide for building resilient microservices.
This article provides a detailed overview of Spring Cloud's core modules—including Eureka for service discovery, Ribbon for client‑side load balancing, OpenFeign for declarative REST calls, Hystrix for circuit breaking, Zuul as an API gateway, Config for centralized configuration, and Bus for message broadcasting—explaining concepts, usage patterns, and code examples for building resilient microservice architectures.
Spring Cloud 2021 (Jubilee) has been officially released, built on Spring Boot 2.6.x, introducing updated core components, new features like Redis routing, HTTP/2 and gRPC support, and important compatibility notes for Spring Boot and Spring Cloud Alibaba users.
This article provides a step‑by‑step tutorial on creating a Eureka registration center, developing product and order microservices, configuring Ribbon for client‑side load balancing, forming a Eureka cluster, and testing the complete microservice ecosystem, all using Spring Cloud and Spring Boot.
This article walks through the complete lifecycle of Spring Cloud Feign in a Spring Boot 2.2.13 application, covering how to enable Feign, scan and register @FeignClient beans, inject them into controllers, create dynamic proxy instances, and finally execute remote calls with load‑balancing and Hystrix support.
This article explains the fundamentals, architecture, strategies, core components, request interception, initialization, synchronization, heartbeat mechanisms, and common configurations of Ribbon, the client‑side load balancer used in Spring Cloud microservice ecosystems.
This article provides a comprehensive overview of Ribbon, the client‑side load‑balancing component in Spring Cloud, covering its core architecture, various load‑balancing algorithms, request‑interception flow, initialization process, service‑list synchronization, heartbeat mechanisms, and practical configuration examples.
This article provides a comprehensive overview of Spring Cloud's core modules—including service discovery with Eureka, client‑side load balancing via Ribbon, declarative REST calls using OpenFeign, fault tolerance with Hystrix, API gateway features of Zuul, centralized configuration with Config, and dynamic updates through Spring Cloud Bus—illustrated with diagrams and code examples.
This article introduces Apache SkyWalking as a powerful open‑source APM solution, compares it with Spring Cloud Sleuth+ZipKin, explains its architecture, walks through server and client setup, data persistence, log collection, performance profiling, alert configuration, and provides practical code snippets and configuration examples.
iQIYI built a Spring Cloud extension that adds zone‑ and region‑aware client‑side load balancing, metadata‑driven instance filtering, and delayed registration plus deregistration hooks, enabling proximity routing, graceful startup, and graceful shutdown for multi‑region, multi‑datacenter deployments and improving service stability and disaster‑recovery.
This article examines three frequent challenges when using Feign in Spring Cloud—where to place the client, whether to wrap Feign interfaces, and how to handle business exceptions—offering a detailed comparison of two call styles, a ResponseBodyAdvice‑based wrapper solution, and a custom error decoder to propagate original exceptions.
This article explains what microservices are, how they communicate, compares Spring Cloud with Dubbo, outlines the relationship between Spring Boot and Spring Cloud, describes circuit breaking and service degradation, lists pros and cons, and compares Eureka and Zookeeper for service discovery.
