This article recounts Zhihu's evolution from a tiny Python‑Tornado service on a single Linode to a massive, highly available backend employing custom logging, event‑driven processing, page‑render optimizations, and a service‑oriented architecture that now supports over 100 million users.
Ren Zhengfei outlines Huawei’s perspective on internet thinking, stressing the need for industrial automation before informationization, urging diversification beyond single business models, warning against hype‑driven innovation, and promoting scientific management and strategic openness for sustainable growth.
This article explains the fundamentals of SSL and OpenSSL, covering symmetric and asymmetric encryption, hash functions, secure data transmission, and how to create and use a self‑signed certificate authority for network security.
The article reviews three cache update strategies—algorithmic eviction (LRU/LFU/FIFO), timeout‑based eviction, and proactive updates—analyzing their consistency guarantees and maintenance costs, and then proposes a combined best‑practice approach for reliable backend caching.
This article introduces exploratory factor analysis as a powerful dimensionality‑reduction method, explains its historical origins, describes its relationship to confirmatory factor analysis, and demonstrates its practical use in consumer‑value research by extracting four interpretable factors.
This article shares Meizu’s team experience building hybrid Android‑H5 apps, covering product requirements, two resource‑loading strategies, the fis3‑based build pipeline, parallel development workflow, a fis3 plugin for switching mock and real code, and practical performance‑optimization tips.
A slow Oracle OLTP query that consumed 56% of DB resources and averaged 28 seconds per execution was dramatically accelerated to millisecond response time by forcing the proper index, refreshing stale table statistics, and ultimately creating a cn + c_date composite index.
Team Foundation Server 2015 Update 1 introduces a range of enhancements—including dual Git/TFVC support, improved web version‑control UI, new Kanban board fields, integrated SonarQube analysis, multi‑selection in backlogs, customizable dashboards, advanced pull‑request features, and Azure resource‑group deployment—providing a richer ALM experience.
This guide explains how to achieve second‑level scheduling on Linux by combining a minute‑based crontab entry with a custom Bash script that loops and uses sleep, including a PHP test task example and step‑by‑step setup instructions.
This article explains why APIs are valuable assets, outlines the essential traits of a good API, and provides a step‑by‑step design process—including requirements gathering, naming, documentation, performance considerations, exception handling, and refactoring examples—illustrated with Java code snippets.
While many developers know they should avoid certain coding shortcuts, this article reveals nine surprisingly common bad programming habits—like using goto, skipping documentation, over‑compressing code, and redefining operators—that programmers often cling to, explaining their origins, risks, and occasional hidden benefits.
The article examines how Apple, Google, and other platforms are shifting core functionalities from standalone apps to the operating system’s home screen and notification center, envisioning a cloud‑based future where users simply state their intent and the OS delivers the result.
This article compares distributed, Java‑based, and non‑Java web crawlers—examining Nutch, Crawler4j, WebMagic, WebCollector, Scrapy and alternatives—highlighting their strengths, limitations, and suitability for tasks such as data extraction, multi‑threading, AJAX handling, and search‑engine construction.
This article traces the evolution of database models—from early hierarchical and network structures through the relational revolution and entity‑relationship diagrams to modern distributed and multi‑tenant designs—highlighting key concepts, technical challenges, and the theoretical foundations that shaped today’s data storage systems.
This article details Medium's complex backend infrastructure, covering its service-oriented design, use of Node.js, Go, DynamoDB, Aurora, Redis, messaging queues, CDN strategies, monitoring tools, and continuous deployment practices.
The article explains 58.com’s service‑oriented architecture that combines dual‑master MySQL replication, a standby database, and Redis caching to provide high‑availability read/write operations, outlines their scaling process, and details a four‑step cache‑consistency strategy.
The article details how LinkedIn has scaled Kafka from handling billions to trillions of messages daily, describing quota enforcement, a ZooKeeper‑free consumer, reliability enhancements, security plans, monitoring frameworks, fault‑injection testing, cluster balancing, and integration with other internal data systems.
This comprehensive guide explains MySQL's various log types, how to view and configure error, general, slow, and binary logs, and details essential server variables for effective database administration and troubleshooting.
This article summarizes a WeChat group Q&A on the current momentum of in‑memory computing, compares TimesTen and SAP HANA, and offers practical advice on building enterprise big‑data platforms, covering cloud vs self‑build, talent, investment, and real‑world case studies.
Learn how to use the powerful sed stream editor for Linux shell scripting, covering basic syntax, common commands for deleting, searching and replacing, inserting text, and printing, with practical examples that demonstrate in-place editing, redirection, and regular expression handling.
