Top Architect focuses on sharing practical architecture knowledge, covering enterprise, system, website, large‑scale distributed, and high‑availability architectures, plus architecture adjustments using internet technologies. We welcome idea‑driven, sharing‑oriented architects to exchange and learn together.
A severe production incident caused duplicate order IDs due to a flawed custom Snowflake implementation, prompting a detailed review of the standard algorithm, identification of critical design mistakes, and a set of practical recommendations for safe, scalable ID generation in distributed back‑end systems.
This article introduces a ServiceManager component that uses Lambda expressions to automatically inject services, handle logging, cache service metadata, and manage exceptions, allowing Spring Boot controllers to call service methods with a single line of code.
This article explains the design and implementation of a generic asynchronous processing SDK for Java, covering its purpose, advantages, core principles, component choices, design patterns, configuration via Apollo, usage steps, safety considerations, and provides complete SQL and Spring configuration examples along with a GitHub repository link.
This guide explains Java's Service Provider Interface (SPI) mechanism, compares it with traditional APIs, and walks through building a multi‑module Maven project that defines an SPI, provides a default implementation, creates an external plugin jar, loads it at runtime with a custom class loader, and integrates the service into a Spring Boot application.
When a core order table with tens of millions of rows needs a new business field, the article explores why a direct ALTER TABLE can lock the table, evaluates master‑slave switching, online DDL tools, extension tables, JSON fields, and a clever reuse of an existing redundant column, providing practical steps and performance insights.
This article explains how Maven‑mvnd accelerates Java project builds by using a long‑running daemon to eliminate JVM startup overhead, reduces resource consumption, improves multi‑module builds, and provides step‑by‑step installation, configuration, and usage instructions with practical command examples.
The article examines how MyBatis’s massive source code employs more than ten classic design patterns—creational, structural, and behavioral—to decouple complex scenarios, illustrating each pattern with diagrams, typical use‑cases, and related classes within the framework.
A legacy project using MySQL 5.7, MyBatis 3.5.0 and mysql‑connector‑java 5.1.26 encounters a "Conversion not supported for type java.time.LocalDateTime" error after switching to MyBatis‑Plus 3.1.1, which is traced to MyBatis 3.5.1 dropping built‑in LocalDateTime handling and the old connector not supporting the type, requiring an upgrade to mysql‑connector‑java 5.1.37 or later.
This guide shows how to replace Spring Boot's default console banner by creating a custom banner.txt with ASCII graphics, using built‑in placeholders for version, port, profile and date, adding ANSI color codes, and optionally disabling the default banner to print a fully customized startup message from Java code.
An in‑depth comparison of Spring Boot and Quarkus evaluates startup time, build speed, binary size, CPU, memory, and response latency using reactive APIs and native images, then outlines migration steps, Spring API compatibility, and practical benefits for developers moving Java microservices to Kubernetes‑native environments.
