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Wukong Talks Architecture

Explaining distributed systems and architecture through stories. Author of the "JVM Performance Tuning in Practice" column, open-source author of "Spring Cloud in Practice PassJava", and independently developed a PMP practice quiz mini-program.

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Latest from Wukong Talks Architecture

100 recent articles max

Wukong Talks Architecture

Dec 24, 2023 · Databases

MySQL Indexes, Lock Types, Transaction Isolation Levels, and Deadlock Analysis

This article explains MySQL index structures, covers covered and back‑table queries, details InnoDB transaction isolation levels, classifies various lock types (table, row, gap, next‑key, intention, auto‑inc, metadata), analyzes lock behavior in multiple scenarios, discusses deadlock causes, and provides DDL and online schema‑change recommendations.

DDLDeadlockMySQL

0 likes · 61 min read

MySQL Indexes, Lock Types, Transaction Isolation Levels, and Deadlock Analysis

Wukong Talks Architecture

Dec 23, 2023 · Backend Development

Spring Boot Email Integration: JavaMailSender, JavaMail API, and Apache Commons Email with Code Samples

This tutorial explains three approaches to sending email in Spring Boot—JavaMailSender, JavaMail API, and Apache Commons Email—compares their advantages and disadvantages, and provides complete Maven dependencies, configuration settings, and ready‑to‑run code examples for each method.

Apache Commons EmailJavaMailSenderSpringBoot

0 likes · 11 min read

Spring Boot Email Integration: JavaMailSender, JavaMail API, and Apache Commons Email with Code Samples

Wukong Talks Architecture

Dec 4, 2023 · Databases

Why Running Production Databases in Docker Is Generally a Bad Idea

The article argues that, despite Docker’s benefits for stateless services, placing production databases in containers introduces reliability, maintainability, and performance drawbacks that outweigh its conveniences, making it generally an unwise choice for critical data workloads.

containersreliability

0 likes · 20 min read

Why Running Production Databases in Docker Is Generally a Bad Idea

Wukong Talks Architecture

Nov 21, 2023 · Operations

Step‑by‑Step CPU Issue Diagnosis for a Java Application in a Kubernetes Pod

This article walks through a real‑world investigation of a pod whose CPU spiked to over 90%, detailing how abnormal JVM garbage‑collection patterns were identified, traced to a specific Java thread, and resolved by fixing an inefficient Excel export routine.

CPUGCJVM

0 likes · 5 min read

Step‑by‑Step CPU Issue Diagnosis for a Java Application in a Kubernetes Pod

Wukong Talks Architecture

Nov 18, 2023 · Databases

MySQL Query Optimization and Index Tuning: From Subqueries to Composite Indexes

This article demonstrates how to dramatically improve MySQL query performance by analyzing execution plans, adding appropriate single‑column and multi‑column indexes, rewriting subqueries as joins, and applying covering indexes, showing step‑by‑step measurements and visual explanations.

MySQLSQL optimizationindexing

0 likes · 9 min read

MySQL Query Optimization and Index Tuning: From Subqueries to Composite Indexes

Wukong Talks Architecture

Oct 13, 2023 · Backend Development

7 Common Message Queue Scenarios and Their Implementations

This article explains seven typical message‑queue use cases—including ordinary, ordered, delayed, transactional, trace, dead‑letter, and priority messages—detailing their business motivations, implementation challenges, and concrete code examples for Kafka, RocketMQ, Pulsar, and RabbitMQ.

Distributed SystemsKafkaMessage Queue

0 likes · 11 min read

7 Common Message Queue Scenarios and Their Implementations

Wukong Talks Architecture

Oct 12, 2023 · R&D Management

How to Set Reasonable Team Goals Using the SMART Principle

This article explains how applying the SMART framework—Specific, Measurable, Achievable, Relevant, and Time‑bound—helps teams define clear, actionable goals, differentiate measurable KPIs from broader KRAs, and avoid common pitfalls such as vague objectives or resource‑driven targets.

KPIsR&DSMART

0 likes · 5 min read

How to Set Reasonable Team Goals Using the SMART Principle

Wukong Talks Architecture

Sep 26, 2023 · Backend Development

Implementing Session Affinity with Nginx ip_hash Directive

This article explains how to achieve session affinity using Nginx's ip_hash directive, covering the concept, configuration syntax, practical examples, common pitfalls, and test results for handling client IP‑based load balancing across backend servers.

BackendIP HashNginx

0 likes · 9 min read

Implementing Session Affinity with Nginx ip_hash Directive

Wukong Talks Architecture

Sep 21, 2023 · Backend Development

Detecting and Preventing Message Loss in Kafka Message Queues

This article explains how to detect, diagnose, and prevent message loss in Kafka-based message queue systems by covering system decoupling, traffic control, data consistency challenges, producer, broker, and consumer issues, and offering configuration, monitoring, and operational best‑practice solutions.

Data ConsistencyDistributed SystemsKafka

0 likes · 12 min read

Detecting and Preventing Message Loss in Kafka Message Queues

Wukong Talks Architecture

Sep 20, 2023 · Backend Development

Configuring Feign Timeout Settings in Standalone and Spring Cloud Environments

This article explains the principles of Feign, demonstrates how to set connection and read timeout values using Feign.Builder, method parameters, Options beans, configuration files, Ribbon, and Hystrix, and clarifies the precedence rules among these approaches in both standalone and Spring Cloud contexts.

FeignHystrixJava

0 likes · 17 min read

Configuring Feign Timeout Settings in Standalone and Spring Cloud Environments