Ruankao E-Commerce Designer (Intermediate) case studies
Ruankao E-Commerce Designer (Intermediate) · Put your knowledge to work in context.
The Ruankao E-Commerce Designer (Intermediate) is a Chinese professional qualification exam for practitioners who plan, design, and implement e-commerce systems. It suits developers moving toward design roles, business analysts, and technical staff who bridge business requirements and system architecture. The Ruankao E-Commerce Designer (Intermediate) case studies are 5 cases and about 5,012 words.
1Channel Economics and Subscription Viability at a Specialty Tea Retailer
Hunan-based specialty tea retailer Yuntai (not a real company) sells 180 SKUs. Last year 62% of ¥18 million net revenue came from a large marketplace and 38% from its own site.
1,066 words, about 5 min2Scoping a B2B Ordering Portal Under a Fixed Date and Budget
Huaxin Foodservice Supplies (fictional) sells 3,200 SKUs to 420 active restaurant and café accounts. Today 62% of orders arrive by phone or email and are keyed in by eight inside-sales reps; the order-entry error rate is 5.8%, and credit-limit checks are done manually in spreadsheets.
1,001 words, about 5 min3Flash-Sale Oversell and Duplicate Shipments at an Appliance Retailer
On 11 November, an online appliance retailer processed 40,000 requests per minute at peak against two Java application servers, one MySQL primary and a single Redis cache. The checkout path read stock from MySQL, checked it in application code, then issued an UPDATE after payment authorization.
994 words, about 5 min4Order Data Growth, Replica Lag and Allocation Deadlocks at an Online Grocery
An online grocery platform runs MySQL 8.0 with a single primary and one read replica. The orders table has 300 million rows and order items 1.2 billion; peak writes reach 8,000 per second.
971 words, about 5 min5PCI Scope, Payment Idempotency and 3DS2 at a Cross-Border Marketplace
A cross-border fashion marketplace sells in the EU, UK and Southeast Asia. Its Java web application currently collects card numbers on its own checkout page and stores them, encrypted with an application-managed AES key, in a MySQL table so that returning customers can see saved cards.
980 words, about 5 min