This article examines how Alibaba's Tengine access layer tackled the CPU bottleneck of Gzip compression by adopting hardware acceleration with Intel QAT cards, detailing the analysis, implementation challenges, performance gains, and operational safeguards that resulted in up to 15% CPU savings and reduced system load.
This guide shows how to set up Django's email backend and logging configuration to automatically send detailed error reports for both HTTP requests and custom tasks, using simple settings changes and a reusable decorator for comprehensive system monitoring.
This guide walks Linux operations engineers through eleven practical checks—ranging from log inspection and user file verification to process analysis and file recovery—to identify whether a machine has been compromised and how to restore critical files.
This article explains how Linux containers, especially Docker, complement microservices by providing lightweight, portable, and easily managed runtime environments, and discusses key concepts such as logging and monitoring, zero‑downtime continuous delivery, and dynamic service registries for scalable cloud‑native applications.
After a sudden server crash, the author traced a ransomware note, uncovered a Bash Shellshock exploit through log analysis and crafted GET requests, verified the vulnerability, upgraded Bash, and applied post‑compromise hardening steps to fully recover the system.
This article presents ten concise best‑practice guidelines for designing clean, efficient REST APIs, covering proper use of HTTP methods, status codes, headers, framework selection, black‑box testing, and five additional crucial recommendations to help developers create elegant and maintainable web services.
The article compiles Meituan‑Dianping engineers' Q&A covering SQL book suggestions, relational versus NoSQL engine choices, performance tuning techniques, time‑series database uses, sharding versus partitioning strategies, query handling in distributed systems, proxy limitations, and practical advice on replication and pre‑database setups.
Front‑end performance, crucial for traffic and conversion, can be optimized by combining traditional non‑visual metrics (like DNS time, TTFB, and First Paint) with perceptual visual metrics (FCP, FMP, Speed Index, PSI), using tools such as Lighthouse, Chrome DevTools, and the custom Twilight video‑analysis utility, as demonstrated by a Vue‑based flight‑ticket site achieving up to 80% FMP improvement.
Using Meituan‑Dianping’s hospitality online feature system as a case study, the article describes how feature production scheduling evolved from offline batch ETL to automated, metadata‑driven pipelines and sub‑second streaming, detailing the underlying architecture, incremental updates, storage abstraction, write‑shaving, atomicity, and recovery mechanisms.
This article details the evolution of Wonder, 360’s internal monitoring platform built on Open‑Falcon, covering its architecture, key features, large‑scale deployment, data collection, alerting mechanisms, custom plugins, and future development plans for smarter, more flexible operations.
This article explains the fundamentals of unit testing, including its importance, various test types, tool categories, implementation principles, hooks, best‑practice guidelines, and introduces the Jest JavaScript testing framework with installation steps, features, and example test scripts for both synchronous and asynchronous code.
The article explains how traditional user research methods struggle to keep pace with fast‑moving internet product cycles and proposes an agile, business‑oriented research framework that shortens study time, improves cross‑functional communication, and ensures research outcomes are actionable and aligned with product goals.
The article presents advanced Nginx configuration techniques—including hiding version information, customizing 404 pages, outputting JSON logs, applying client‑based request logic, forcing download filenames, implementing rate limiting, and using traffic mirroring—while also touching on upstream and caching features for enhanced security, observability, and traffic management.
This article explains the instruction‑reordering problem that breaks the double‑checked locking singleton pattern in Java, shows how the volatile keyword prevents reordering and ensures memory visibility, and compares volatile with synchronized for thread safety.
This article provides a detailed, side‑by‑side comparison of MySQL and PostgreSQL, covering their histories, licensing, feature sets, performance characteristics, extensions like PostGIS, indexing, clustering, transaction handling, and practical guidance on choosing the right database for specific workloads.
This article explains the scenarios where HBase is appropriate, introduces core HTable concepts such as row keys, column families, columns, timestamps and values, and outlines design principles for schema and versioning to efficiently handle semi‑structured, sparse, multi‑version and massive data sets.
This article explains the concept of custom schema URLs in mobile development, describes the problems of a growing ad‑hoc implementation, and presents a refactored, configuration‑driven architecture that provides automatic matching, self‑documenting schemas, and integrated testing for Android apps.
This guide walks you through installing Anaconda, launching Jupyter Notebook locally, configuring its settings, setting up Nginx reverse proxy with WebSocket support, and securing the server with Let’s Encrypt HTTPS without needing port 80.
A Linux server behind multiple firewalls was compromised by a Struts2 remote code execution flaw (CVE‑2017‑5638), leading to a hidden cron job that repeatedly launched a Bitcoin mining script, illustrating how outdated frameworks can expose systems to stealthy resource‑draining attacks.
This article details how Suning built a Hadoop‑based big data platform and leveraged Apache Spark to process terabytes of product price and inventory data, describing the system architecture, four key technical practices, performance results, and future data‑lake directions.
