Learning notes
This article analyzes why Netty and ZooKeeper form the foundation of RPC frameworks, covering IO model evolution, communication and coordination layers, core components, common pitfalls, and a 10-part series roadmap to build a mini RPC system.
This article analyzes when to adopt Service Mesh over SDK-based governance, using three real incidents to illustrate trade-offs, comparing three governance generations, detailing cost analysis, migration paths, and troubleshooting methods, concluding that Mesh amplifies existing governance capability rather than creating it.
This article analyzes three real-world gray release failures in Spring Cloud, revealing that successful gray release requires full-chain context propagation, traffic-proportion accuracy, and bidirectional data compatibility—not just gateway routing. It covers implementation details, LoadBalancer filter chains, fallback strategies, database migration patterns, and troubleshooting techniques.
This article analyzes Spring Cloud Stream's binder abstraction, partitioning mechanics, and configuration pitfalls through real incidents, source code insights, and production guidelines, revealing why 'swap MQ without code changes' only half-works and how to avoid silent failures in message-driven systems.
This article dissects three real-world authentication failures in Spring Cloud Gateway, explaining why gateway-only auth is insufficient, how to reconcile stateless JWT with immediate revocation, and why downstream services must verify internal signatures rather than trust headers, with production-ready code and configuration patterns.
This article explains how TraceId propagates across services, threads, and message queues in Spring Cloud, covering W3C/B3 formats, Micrometer Tracing architecture, cross-thread context propagation via ThreadLocal and Reactor Context, MQ header injection, sampling strategies, and common pitfalls with solutions.
This article deep-dives into Sentinel's core mechanisms including sliding window statistics, three rate-limiting algorithms, circuit breaker state machine, Slot chain execution flow, hotspot parameter limiting, rule persistence modes, Gateway/Feign integration, threshold calculation, and common pitfalls with troubleshooting steps.
This article analyzes Spring Cloud Gateway's reactive architecture through three production incidents, detailing route predicates, filter chain mechanics, source code flow, and four critical tuning dimensions—thread model, connection pooling, timeout hierarchy, and off-heap memory—to prevent gateway failures under high concurrency.
This article dissects OpenFeign's declarative HTTP client internals, covering JDK dynamic proxy mechanics, load balancing integration, timeout pyramid design, connection pooling, retry disciplines, and common pitfalls with production-ready configurations and source-code walkthroughs.
This article deep-dives into Nacos' dual role as service registry and config center, explaining its AP-based Distro protocol, heartbeat mechanisms, gRPC long-polling config push, @RefreshScope internals, deployment essentials, and eight common pitfalls with troubleshooting steps.
