Official account for High Availability Architecture.
An in‑depth investigation of a Redis timeout problem in a Spring Cloud backend reveals that the Lettuce client’s Netty EventLoop threads become blocked by synchronous Pub/Sub callbacks, causing socket buffer buildup, and proposes solutions such as increasing I/O threads or off‑loading processing to avoid the issue.
This article presents a thorough guide on modern code review, covering its importance, common obstacles, preparation steps, automation tools, good and bad commit messages, mindset, code quality principles, review workflow, and practical tips for overcoming challenges and improving team engineering culture.
This article reviews the historical evolution of login authentication—from simple username/password in monolithic apps to token mechanisms, unified account centers, OAuth, and sub‑tokens—while also presenting modern one‑click, trusted‑device, and facial‑verification login methods and future AI‑driven security trends.
This article provides a comprehensive overview of Netty's core layers, protocol support, transport services, logical architecture, various I/O models, packet framing techniques, custom protocol design, write‑and‑flush behavior, off‑heap memory management, and high‑performance data structures such as FastThreadLocal and HashedTimerWheel.
To improve the ultra‑high availability of WeChat Pay, the team introduced chaos engineering using multi‑partition isolation, controlled blast radius, automated fault injection, and systematic risk discovery, detailing the design, execution, automation, and results of this reliability‑focused initiative.
This article presents practical performance‑optimization strategies for high‑throughput C++ services, including replacing Protobuf with hand‑written classes, adopting cache‑friendly data structures, using jemalloc/tcmalloc instead of the default allocator, employing lock‑free double‑buffer designs, tailoring data formats for specific workloads, and leveraging profiling tools to measure gains.
OpenAI’s newly released Sora text‑to‑video model demonstrates unprecedented high‑resolution, long‑duration video generation by encoding videos into latent space, applying diffusion with a transformer conditioned on text, and decoding back to pixels, marking a major leap in AI video synthesis and its potential applications.
This article explains Spring's seven transaction propagation behaviors—REQUIRED, SUPPORTS, MANDATORY, REQUIRES_NEW, NOT_SUPPORTED, NEVER, and NESTED—detailing how nested transactional methods interact, when new transactions are created or suspended, and how exceptions influence commit and rollback across different propagation settings.
This article explains the concept of high concurrency, its challenges such as performance degradation and resource contention, and presents comprehensive solutions including various caching mechanisms, multiple rate‑limiting algorithms, and degradation and circuit‑breaker strategies to ensure system stability under heavy load.
This article explains how to evolve a single‑server application into a highly available, horizontally scalable system that can serve over a million users by introducing load balancers, database replication, caching layers, CDNs, stateless network design, multi‑data‑center deployment, and message queues.
