Pursue excellence, start again with Tongcheng! More technical insights to help you along your journey and make development enjoyable.
Flower is a Java‑based reactive programming framework built on Akka that enables developers to compose fine‑grained services into visualized, message‑driven flows, providing instant response, elasticity, and distributed asynchronous processing for high‑performance microservice architectures.
This article analyses the current front‑end development landscape, the talent shortage, reasons behind it, and proposes a systematic learning roadmap—including understanding the technology stack, assessing personal stage, and continuous skill growth—to help both newcomers and experienced developers advance their careers.
This article reviews the challenges of building a real‑time data warehouse, compares Lambda and Kappa architectures, introduces Apache Kudu’s master‑tablet design, storage model and partition strategies, and shares practical experiences and future directions for a Kudu‑based streaming analytics platform.
This article details Tongcheng Travel’s month‑long, zero‑downtime migration of hundreds of petabytes of Hadoop HDFS and YARN clusters across data centers, describing the background, migration strategies, lessons learned, tool enhancements, and future plans to improve data locality, balance, and monitoring.
This article details the motivation, design, key features, implementation techniques, and evaluation standards of a real‑time Java code‑coverage platform built on Jacoco, covering background industry trends, platform architecture, incremental reporting, visualization, Maven integration, and practical lessons for developers and QA teams.
This article describes the background, design choices, and practical challenges of using Apache Hudi for data updates on the Tongcheng Elong platform, analyzes three architectural alternatives, details Hudi's core configurations and write strategies, and presents concrete solutions to version compatibility, upsert semantics, insert behavior, partition management, streaming backlog monitoring, and business‑specific requirements, culminating in a productized Hudi service and future roadmap.
This article details the design and implementation of a high‑performance, highly available membership system for the merged Tongcheng‑eLong platform, covering Elasticsearch dual‑center clusters, traffic‑isolated three‑cluster architecture, deep ES optimizations, Redis caching and dual‑center clusters, MySQL dual‑center partitioning, migration strategies, and future fine‑grained flow‑control and degradation measures.
This article explains how .NET's Microsoft.Extensions.ObjectPool framework can be used to reuse objects, customize pooling policies, integrate with dependency injection, and extend pooling to collections, StringBuilder, arrays and memory buffers, thereby minimizing garbage‑collection pressure and boosting application throughput.
The article introduces JavaTweakHook, a lightweight Android hook framework that avoids Xposed by directly manipulating ART structures, compares it with existing solutions, details the hook process—including method creation, ArtMethod copying, assembly trampolines, and native‑Java integration—and provides compilation, usage, and limitation notes.
The article explains how the thermodynamic entropy principle inspires software architecture design, emphasizes abstract thinking and domain‑driven design, compares monolithic and microservice approaches, outlines microservice benefits and distributed‑system design principles, and discusses the complementary role of middle‑platform architecture in modern backend development.
