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The article analyzes the limitations of deploying web services with Tomcat alone—such as DNS IP caps, scaling costs, lack of health checks, static file handling, and release downtime—and demonstrates how Nginx’s reverse‑proxy, health‑check, and virtual‑host features overcome these issues with concrete configuration examples.
The article explains that the initial Feign request is slow because Ribbon lazily creates its load‑balancer client and fetches the service list from the registry, and shows how enabling Ribbon's eager‑load mode pre‑warms the client to eliminate the delay.
This article explains why strict permission management is essential, walks through various RBAC models—including role inheritance and constrained RBAC—covers user groups, organizations, and positions, and presents both standard and ideal database table designs for implementing a scalable access‑control system.
This article introduces a range of essential Linux performance analysis utilities—including vmstat, iostat, dstat, iotop, top/htop, mpstat, netstat, ps, strace, uptime, lsof, perf, and sar—explains their core options, shows example commands, and clarifies which metrics each tool reports to help engineers monitor and troubleshoot system behavior.
The article explains why Redis stores a single logical collection using two underlying data structures—intset and hashtable for sets, skiplist and ziplist for sorted sets—detailing the encoding rules, upgrade process, example commands, and how this dual‑storage balances O(1) lookups with ordered range queries without duplicating data.
The article explains that RestTemplate is deprecated in Spring 5+, outlines WebClient’s non‑blocking I/O, functional style, streaming support and improved error handling, and provides step‑by‑step code examples for synchronous and asynchronous requests, timeout configuration, and error processing.
This article explains Redis's two persistence mechanisms—AOF and RDB—detailing how they work, their write‑back strategies, rewrite process, snapshot principles, and the hybrid approach, and provides practical guidance on choosing the right configuration to balance performance and reliability.
This article explains MySQL events as built‑in schedulers, outlines their advantages, shows how to enable the event scheduler, create, view, modify, and drop events, and provides concrete examples for generating real‑time sales data and periodic statistics.
This article walks through the five core Spring Boot extension points—ApplicationContextInitializer, ApplicationListener, Runner, BeanFactoryPostProcessor, and BeanPostProcessor—showing how they are discovered via SPI, where they are invoked in the startup flow, and how to implement and register custom extensions.
This article explains why plugin architectures boost modularity, extensibility and third‑party integration, then walks through multiple Java‑based implementation techniques—including ServiceLoader, custom configuration files, and Spring Boot’s spring.factories—showing complete code samples, runtime screenshots and a real‑world microservice case study.
