This article explains the differences between git reset, revert, and checkout, details the three reset modes (--soft, --mixed, --hard), shows when to use each command safely, provides practical scenarios, introduces reflog for recovery, and warns about common pitfalls.
The article walks through the full payment chain in China—from an e‑commerce checkout on JD.com, through third‑party payment gateways, banking channels, and the central bank—detailing each subsystem such as cashier, transaction core, payment core, member, accounting and settlement layers.
This comprehensive guide explores the evolution of payment checkout systems, breaks down their architecture, outlines preparation steps, details processing flows, analyzes common payment scenarios, and presents five concrete industry examples—from medical billing to ETC recharge—illustrated with diagrams and key performance metrics.
This article explains the concepts, scenario challenges, functional features, third‑party integration, rule‑engine design, and big‑data handling strategies behind a scalable online checkout system, providing a comprehensive view of its backend architecture and implementation.
This article explains the design and architecture of a payment checkout system, covering its background, core concepts, common payment scenarios, functional features, third‑party integration, interaction flow, backend technical stack, rule‑engine implementation, and strategies for handling massive data at scale.
This article explains the background, key scenarios, functional components, third‑party payment capabilities, implementation logic, rule‑engine usage, and large‑scale data handling strategies of a checkout system, providing a comprehensive view of its backend architecture and operational considerations.
The article explains that a checkout is the final online payment interface that consolidates multiple payment channels, adapts to various device contexts (PC, H5, SDK, API) and presentation modes, simplifies integration, enhances security, manages channel display rules and transaction flows, and future‑proofs merchants against evolving payment innovations.
This guide explains Git's core commands—including add, commit, reset, checkout, diff, merge, cherry-pick, and rebase—covers staging, branching, detached HEAD handling, and the underlying storage model, providing a comprehensive overview for developers seeking to master version control.
This guide walks through essential Git commands—including add, commit, reset, checkout, merge, cherry-pick, and rebase—explaining their effects on the working directory, index, and repository, while covering concepts such as HEAD, detached HEAD, and the underlying object storage.
This article explains the most common Git undo scenarios—including revert, reset, amend, checkout, and removing staged files—providing clear command examples and explanations of how each operation works and when to use them.
This guide explains Git’s core concepts and basic commands—including add, commit, reset, checkout, merge, rebase, and cherry-pick—illustrated with diagrams that show how files move between the working directory, index, and repository, and how branches, HEAD, and detached states operate.
The JD App checkout team replaced its hybrid H5‑native architecture with a pure native solution, redesigning the client and server interfaces to shorten the payment flow, improve stability and security, and achieve significant performance and cost reductions while maintaining configurability for dynamic content.
