A platform for sharing and discussing tech knowledge, guiding you toward the cloud of technology.
This article details the TiDB upgrade journey from version 5.3.3 to 7.5.x, covering architecture, new v7 features, migration strategies, encountered problems with full‑table scans and inaccurate aggregation plans, the solutions applied, and the measurable performance and stability gains achieved after the upgrade.
This article details the end‑to‑end technical redesign of an e‑commerce management‑category system, covering business pain points, a layered backend architecture, core Java modules, data‑model design, data‑warehouse computation, automated rule validation, approval workflows, and the resulting efficiency gains that shrink rule‑update cycles to just one or two days.
This article explains how a leading e‑commerce platform leveraged large language models to overcome traditional search relevance challenges, detailing the iterative workflow, model distillation, performance gains, deployment results, and future directions for smarter, more accurate product search.
This article explains how proper document chunking—choosing the right chunk size, overlap, and structure‑aware boundaries—directly impacts the relevance, factuality, and efficiency of Retrieval‑Augmented Generation pipelines, and provides multiple Python implementations ranging from simple fixed‑length splits to semantic and hybrid approaches.
A backend admin service failed to start due to a Spring circular‑dependency error where a bean was injected in its raw form before AOP proxy creation, exposing the limits of Spring’s three‑level cache and prompting a detailed analysis of the root cause and practical solutions.
This article details the technical design of the Apex VSCode plugin, covering its background, overall architecture, activation flow, SSO authentication, rule‑knowledge‑base engineering, remote Webview integration, version orchestration, project service handling, logging, and future enhancements for AI‑driven development efficiency.
This article dissects Alibaba's Fastjson library, explaining its architecture, core modules, project structure, serialization and deserialization processes, ASM‑based performance optimizations, AutoType security mechanisms, and streaming API, while providing code examples and practical insights for Java developers.
This article explains how the Transmittable ThreadLocal (TTL) Java agent works, why improper usage can cause context contamination, memory leaks, and CPU spikes, and provides real production cases, code examples, and practical recommendations to avoid these pitfalls.
This article explains why thread pools are essential for performance, explores the JDK ThreadPoolExecutor’s internal architecture, parameters, lifecycle states, common pitfalls, and provides practical best‑practice guidelines—including handling invokeAll timeouts, submit exceptions, rejection policies, and pool isolation techniques—to help developers use thread pools safely and efficiently.
This article walks through the design and implementation of a Chrome extension that mocks API responses by intercepting network requests using Manifest V3, covering architecture differences, core configuration, request‑blocking techniques, script injection, project structure, rule creation, whitelist management, and future enhancements.
