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.
Douyin, along with other Chinese internet giants, operates data centers with T‑level (≈1 TB/s) outbound bandwidth, hosts over 200 000 servers, and relies on dual‑link designs, CDN acceleration, and multi‑node load balancing to deliver seamless video streams to hundreds of millions of concurrent users.
The article explains why ordinary MyBatisPlus pagination becomes slow and memory‑hungry when processing millions of rows, and demonstrates three alternatives—regular query, stream query, and cursor query—detailing their implementations, trade‑offs, and practical code snippets for MySQL and Oracle environments.
A newcomer swapped MyBatis for MyBatis‑Plus in an old Java project, which caused a runtime exception about unsupported java.time.LocalDateTime conversion; the root cause was a MyBatis version change and an outdated MySQL JDBC driver, fixed by upgrading the driver.
A recent OpenAI Codex leak exposed internal models—including GPT‑5.5, Glacier, Heisenberg and Arcanine—triggering analysis of the accidental staging‑to‑production push, the shift toward agentic AI, speculative new architectures, and the community debate over whether the incident was a genuine engineering mishap or a calculated marketing move.
The article lists twelve concrete anti‑patterns—such as over‑splitting microservices, writing megamethods, deep nesting, misleading comments, copy‑pasting code, ignoring logging, and over‑engineering with heavyweight frameworks—that dramatically reduce code readability and make maintenance a nightmare, illustrated through the fictional programmer Er Gou and his bewildered teammates.
The article evaluates 13 Java web frameworks—Spring Boot, Quarkus, Micronaut, Vert.x, Helidon, Javalin, Dropwizard, Play Framework, Grails, Apache Wicket, Struts 2, JSF, and native Servlet+JSP—using six objective dimensions (performance, ecosystem maturity, learning curve, development efficiency, enterprise adoption, and innovation) and presents concrete usage statistics, benchmark numbers, and tiered rankings to guide technology selection.
Learn how to replace tangled if‑else login code with a clean, extensible architecture using Spring Boot, combining the Factory pattern to instantiate strategy beans and the Strategy pattern to encapsulate each login method (password, WeChat, SMS, etc.), enabling easy addition of new authentication types.
This article presents an objective, data‑backed comparison of popular Java backend frameworks—evaluating performance, ecosystem maturity, learning curve, development efficiency, and enterprise adoption—to help developers choose the most suitable technology for their specific scenarios.
An online payment service suffered invisible data loss and lock timeouts because a newly deployed business branch failed to commit its transaction, leading to polluted connections that were reused by other services, and the article explains the root cause, debugging steps, code fixes, and preventive measures.
This article walks through installing the libmaxminddb library, downloading and compiling the ngx_http_geoip2 module, upgrading Nginx to version 1.18, adding the latest GeoLite2 database, configuring Nginx to reject non‑Chinese IPs, and verifying the setup with test requests.
