Pursue excellence, start again with Tongcheng! More technical insights to help you along your journey and make development enjoyable.
This article outlines the background, mechanisms, third‑party SDKs, test plan design, practical techniques, and real‑world case studies for ensuring accurate location services in the Tongcheng Travel mobile application across domestic and international scenarios.
The article discusses the evolution of image search engines, outlines key challenges such as image quality, watermarks, speed, and feature extraction, and explains how the Facenet deep‑learning model with Triplet loss can be used to generate compact image embeddings for efficient similarity search.
The article details how the Transportation Division’s data warehouse grew from a simple SQL‑based solution to a multi‑layer, big‑data platform handling petabyte‑scale data with daily 10 TB increments, describing the technical and business architecture, ETL strategies, and future roadmap.
This article recounts a year-long journey to become a data mining engineer, explaining the role’s value, required skills, tools such as Excel, Tableau, SQL, Python, Scala, Spark, and machine‑learning techniques, and offers practical steps for aspiring professionals.
The article explains why an Android app may start several processes, causing Application.onCreate() to execute multiple times, and presents various techniques—including android:process configuration, process‑specific initialization, getRunningAppProcesses(), UsageStatsManager, and the AndroidProcesses library—to reduce startup latency and manage running processes across different Android versions.
This article examines Chrome extension manifest structures, recent security‑related changes, and presents methods—including script onload/onerror probing and a web‑store spider—to detect and enumerate extensions, supplemented by sample code and data from large‑scale analysis.
This article details Tongcheng Travel's extensive experience of running over a thousand MySQL instances in Docker, describing the motivations, architecture, resource scheduling, backup, monitoring, high‑availability, migration, and operational benefits of their private cloud database platform.
This article introduces the origin and key alliances of blockchain, explains its core characteristics such as decentralization, consensus mechanisms and transaction transparency, and provides a detailed description of the Merkle Tree algorithm, its implementation, verification steps, and applications in distributed file synchronization.
This article details the evolution of Tongcheng Travel’s PaaS platform, describing its shift from Docker Swarm host networking to a custom container network using Calico and Contiv, the implementation of public‑IP allocation, and the monitoring solution built with OVS sFlow, Redis and ELK.
This article summarizes frequent CSS rendering inconsistencies across Android and iOS webviews, covering line‑height quirks, multiline ellipsis, badge implementation, image‑text layouts, adaptive width handling, inline‑block behavior, and simulated scrolling, while offering concrete code snippets and visual examples.
