This guide details the iOS App Store pre‑review process, covering text, image, video, UI, screenshot, preview video, account, IPA package, and third‑party license checks, along with common rejection clauses, real examples, and practical mitigation steps to ensure a smooth submission.
Discover ten practical PostgreSQL techniques—including CTEs, custom .psqlrc settings, pg_stat_statements, FDWs, array handling, materialized views, window functions, pivot shortcuts, PostGIS, and JSONB—to write cleaner queries, improve performance, and leverage advanced database features.
This article explains the fundamentals of NAND flash memory, compares SLC, MLC, eMLC, cMLC and TLC cells, discusses SSD reliability techniques such as ECC and over‑provisioning, and introduces emerging 3D storage solutions like memristor‑based XPoint, horizontal stacking, and vertical V‑NAND.
The article explains how to leverage Apache Spark for machine‑learning tasks, large‑scale new‑word discovery, and simple intelligent question‑answering by using Spark‑Shell, Scala code, and word2vec‑based similarity, while sharing practical tips and performance considerations.
An ex‑WeChat engineer shares practical strategies to accelerate Android development, covering RxJava for reactive streams, MVP/MVVM architecture, REST client generation, image‑loader choices, quality monitoring tools, and workflow best practices that can help startups build high‑performance apps efficiently.
This article investigates the conditions under which Node.js’s drain event is emitted, explores its relationship with socket.write’s return value and highWaterMark, demonstrates experiments with TCP and HTTP streams, and shows how to implement proper back‑pressure handling using pause/resume or pipe.
This article explains common load‑balancing solutions, details Linux Virtual Server (LVS) architecture, types, scheduling algorithms, and provides practical ipvsadm command examples for configuring NAT, DR, TUN, and FULLNAT models in a Linux environment.
An experienced Facebook engineer explains that promotions rely on sustained technical excellence, measurable impact, peer feedback, and a transparent calibration process rather than office politics, outlining the review steps, criteria, and the importance of helping others.
This guide walks you through installing Git, configuring your identity, creating remote and local repositories, staging and committing changes, managing branches, merging, discarding, rolling back, pushing to and pulling from remote servers, and setting up handy command aliases, all with clear examples.
The article compares IBM Bluemix's Cloud Foundry and Docker, outlining their core concepts, key advantages such as ease of use versus portability, differences in packaging, scalability, service integration, and provides guidance on choosing the right platform for various application needs.
A seasoned operations leader discusses how e‑commerce operational support differs from general internet applications, covering longer support chains, consistency models, seasonal traffic spikes, team role separation, mobile‑internet challenges, future planning, and the rise of enterprise‑level ops services.
This article presents a comprehensive guide to MySQL optimization, covering its strengths and weaknesses, daily DBA tasks, development and operational standards, sharding strategies, backup solutions, performance tuning, replication options, InnoDB configuration, system-level tweaks, and future improvement directions.
This article details Facebook's MySQL backup architecture, covering preparation, logical backup format, storage locations, source selection, full and incremental backup pipelines, verification mechanisms, and future directions such as RBR‑based logical incremental backups.
This article introduces the fundamental MapReduce model and Hadoop framework, explains their roles in large‑scale data processing, and then examines Taobao’s massive‑data product architecture—including its data source, compute, storage, query, and product layers, as well as the MyFOX, Prom, and Glider components and caching strategies.
This article details Meituan's 2014 presentation on building a performance analysis framework and monitoring platform, describing the bottlenecks they faced, the metrics they collected, the insights gained, and the tangible improvements achieved across front‑end and back‑end processing.
This article shares the architecture, design principles, challenges, and performance‑optimizing solutions behind a ten‑hundred‑thousand‑scale server monitoring system, covering data collection agents, distributed pipelines, real‑time alerts, high throughput, multi‑platform support, and practical lessons learned.
In a series of interviews, the creators of Node.js, Python, Ruby, Kotlin, Scala, C++, Dart, Julia, and Clojure discuss each language's core strengths, design goals, and the contexts in which developers should choose them, offering a panoramic view of modern programming language evolution.
This article explains how to build a large‑scale, real‑time vehicle monitoring system using Apache Storm and Kafka on Alibaba Cloud, covering the challenges of big‑data ingestion, system architecture, deployment steps, performance testing, and practical lessons learned.
The article details how Snapdeal built a high‑performance, low‑latency ad‑serving platform that handles billions of daily requests by employing horizontal and vertical scaling, AP‑focused CAP choices, in‑memory data structures, and a suite of open‑source backend technologies.
This guide outlines a structured MySQL DBA interview process, covering self‑introduction, resume deep‑dive, career‑development questions, fundamental knowledge such as index types, core technical skills like backup, replication and performance troubleshooting, and broader potential areas including Linux and programming language proficiency.
