This article walks through a real‑world investigation of a Linux server infected with the Linux.BackDoor.Gates.5 backdoor, detailing traffic analysis, process inspection, malicious file identification, manual cleanup commands, and the use of ClamAV to scan and eradicate the threat.
Qunar React Native (QRN) is a customized cross‑platform mobile framework built on React Native that unifies iOS and Android UI, reduces app size, supports hot updates, offline bundles, custom IconFont, and has been deployed at massive scale within Qunar’s travel app.
The article outlines twenty‑five practical principles for becoming an excellent software model designer, emphasizing the importance of people over technology, thorough requirement analysis, humility, low coupling, high cohesion, portability, scalability, performance, proper documentation, and continuous learning to build robust, maintainable systems.
PHP7 brings a host of performance improvements and new language features—including refined namespace usage, interfaces, traits, generators, closures, Zend OPcache, and a built‑in HTTP server—each illustrated with practical code examples and best‑practice recommendations for modern backend development.
This article presents a detailed walkthrough of a typical web system architecture, covering layered components, load‑balancing strategies, business service and communication layers, storage options from file to object stores, and key criteria for evaluating architecture such as cost, scalability, security, and disaster recovery.
This guide explains how to transform an ordinary Oracle table larger than 2 GB into a partitioned table using the online redefinition method (DBMS_REDEFINITION), detailing each step from feasibility checks to final cleanup with example PL/SQL code.
A diverse group of practitioners share recommendations for books, technologies, real‑world use cases, and practical challenges when learning and applying big‑data processing, covering Hadoop, Spark, data visualization, ETL, and the relationship between data, algorithms, and business value.
This guide explains how to replace Tomcat's default HttpSession with Spring Session backed by Redis, covering load‑balancing challenges, configuration steps, common pitfalls, and a complete XML‑based example for building a scalable distributed web application.
This guide introduces beginners to core machine learning concepts, covering feature design, supervised and unsupervised methods such as perceptron, logistic regression, decision trees, LDA, and ensemble techniques like bagging and boosting, while explaining model evaluation, overfitting, and practical optimization strategies.
SOA design should stay as simple as possible, guided by nine core principles—including standardized contracts, loose coupling, abstraction, reuse, autonomy, statelessness, discovery, composition, and collaboration—that together ensure robust, reusable, and maintainable services across enterprise systems.
Learn how Python’s break statement works to terminate loops, its behavior in while and for constructs, handling of nested loops, and see clear syntax, flowchart, and example outputs that illustrate its practical use in controlling program flow.
During the Chinese New Year a client’s Oracle‑Tomcat server was overwhelmed by massive UDP traffic, prompting a forensic investigation that uncovered a hidden Trojan, detailed command‑line analysis, iptables hardening, and the root cause of a weak SSH password left after a hardware upgrade.
This article reviews major big‑data storage and query architectures—including HBase, Dremel/Parquet, pre‑aggregation systems, Lucene, and the custom Tindex solution—evaluating their strengths, weaknesses, and suitability for real‑time, high‑volume analytical workloads.
This article walks through common traps in Oracle's Cost‑Based Optimizer (CBO), explains why query transformations, FILTER operations, and inaccurate statistics can cripple performance, and provides practical solutions—including NULL‑AWARE anti‑joins, hint usage, SQLT tooling, and SQL rewrites—to dramatically speed up problematic queries.
This article explores the challenges of operating Alibaba's large‑scale data platforms, describes the automation platform built to address them, and shares data‑driven, fine‑grained operational practices that enable stable, efficient, and cost‑effective service delivery.
This article introduces Node.js's built‑in crypto module, explaining how to perform one‑way hashing with SHA‑256, create HMACs for stronger integrity checks, and use symmetric cipher/decipher for encrypting and decrypting data, complete with practical code snippets.
Learn how to achieve near real‑time, time‑series monitoring of Spring Boot applications without writing code by combining Spring Boot Actuator, Jolokia, InfluxDB, Telegraf, and Grafana, while evaluating alternative tools like Prometheus, Graphite, and JMXTrans and understanding their limitations.
This article examines Youku’s large‑scale system architecture, detailing its server fleet, LAMP‑based front‑end framework, evolving MySQL database designs from master‑slave replication to vertical partitioning and sharding, and its caching strategies and CDN deployment that together support over 1 billion daily users.
This article dissects YouTube's massive infrastructure, detailing the basic platform, web and video services, thumbnail handling, database evolution, CDN usage, and data‑center strategies that enable over half a billion daily video clicks with a surprisingly small engineering team.
The article examines a high‑volume Oracle query scenario, outlines its inefficiencies when using multiple IN clauses, and compares three optimization approaches—including a single‑SQL join, UNION ALL views, and temporary tables—while providing detailed SQL examples, performance considerations, and practical recommendations.
