Software Architect & Technical Lead
ZiZai TongCheng – Living City Platform
Local info · Local life · Errands · Community — one city portal
ZiZai TongCheng is a self-operated all-in-one city portal: classifieds, local commerce, errand tasks, and community in one mini program / app. It is a live product in production, and a capability showcase for similar city-platform builds.
What This Project Delivered
Four Pillars, One Entry
Info, commerce, gig labor, and relationships close the loop in one city portal instead of four disconnected apps.
Live in Production
Not a slide-deck prototype — a self-operated platform we keep shipping, which is why it works as a delivery showcase.
Mini-program First
UniApp / mini-program delivery so users enter from WeChat-like surfaces without a heavy install barrier.
Merchant + User Loops
Merchants onboard, list, fulfill, and settle; users post, buy, dispatch errands, and chat locally.
Repeatable Architecture
Modules are structured so similar city or industry portals can be customized and deployed without starting from zero.
Ops-ready Backend
Java / Spring Boot services with Redis, MySQL, and containerized delivery for city-scale traffic.
Core Pillars
Local info · Local life · Errands · Community — one city portal
Local Info
Housing, jobs, education, second-hand, and services — the “find it” foundation.
- ▸Classified categories
- ▸Publish as a first-class tab
- ▸Moderation & search
- ▸City switch
Local Life
Group buys, in-store services, cart and payments.
- ▸Services & booking
- ▸Mall & payments
- ▸Group buy / coupons
- ▸Shop onboarding
Errand Tasks
Post work, dispatch, complete, and settle — a standalone gig pillar.
- ▸Task hall
- ▸Accept / complete
- ▸Settlement
- ▸Local matching
Community
Neighborhood chats and local social features.
- ▸Communities & feeds
- ▸Groups
- ▸DM
- ▸Local social
Typical Flows
Find Housing or a Job
Switch city → browse classifieds → contact the poster — the info pillar as a daily entry.
Group Buy to Pickup
User joins a group buy → pays in-app → merchant fulfills / verifies pickup.
Post an Errand
A user posts a local task → a nearby helper accepts → completion triggers settlement.
Neighborhood Chat
Residents join a community or group to keep activity and relationships in the same city.
Capability Overview
| Domain | Capabilities |
|---|---|
| Architecture | Overall city-portal architecture, UniApp clients, Java services |
| Info | Classifieds, publish, moderation, city switch |
| Commerce | Group buy, in-store, cart, payments, merchant ops |
| Gig | Task hall, dispatch, settlement |
| Social | Communities, groups, DM |
| Delivery | Spring Boot, Redis, MySQL, Vue.js, UniApp, Docker, K8s |
Tech Stack
ZiZai TongCheng is the city portal we actually run. The project page documents the architecture and delivery; the living platform is the product you can explore and reuse as a template.
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