More on Backend and DB – Create a Very Simple Chat App
Spring 2019 。 Ric Huang
This has been a crazy week… so sorry I don't have much time to work on the slides…
Anyway, please start by downloading the simple chat app here
A Very Simple Chat App
- tar zxvf rics_chat_boilerplate.tgz
- cd rics_chat_boilerplate; npm install
- Go to "https://mlab.com/home" to apply for a FREE MongoDB service
- npm start
MongoDB
- Official Website (link)
- "MongoDB is a document database with the scalability and flexibility that you want with the querying and indexing that you need"
- 簡單的說，就是 data 以類似 JSON (Key-value pairs) 的方式儲存在資料庫裡面
補充：Relational Database (slides from 106-2)
A Simple Web Service Framework
A Simple Chat App
- File structure
> server.js // server program
models/message.js // to work with Mongoose ORM
> public/index.html // client view
public/script.js // to handle socket.io communication
// Taken from (ref)
Midterm Individual Project (20%)
- 題目自訂，一個人一組, details TBA
- Requirements
- Client-side programs in React.js
- Server-side programs in Node.js
- Recommended
- Database to store persistent data
- Use "Promise" or "Async/Await" to ensure asynchronous non-blocking communications
- Deadline: 9pm, Tuesday, 05/14
More on Backend and DB – Create a Very Simple Chat App Spring 2019 。 Ric Huang
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