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dcard_intern_pre_homework's Introduction

demo

demand

  • 為了不讓伺服器過載,請設計一個 middleware
  • 限制每小時來自同一個 IP 的請求數量不得超過 1000
  • 在 response headers 中加入剩餘的請求數量 (X-RateLimit-Remaining) 以及 rate + limit 歸零的時間 (X-RateLimit-Reset)
  • 如果超過限制的話就回傳 429 (Too Many Requests)
  • 可以使用各種資料庫達成

run server

cd dcard_intern_pre_homework
npm install
npm start

visit http://127.0.0.1:5000

defect

  • callback hell

technic use

  • Nodejs express
  • MySQL

database structure

CREATE TABLE `ip_table` (
	`ip_addr` TEXT NOT NULL DEFAULT '',
	`req_times` INT(11) NOT NULL DEFAULT 0,
	`dead_time` DATETIME NULL DEFAULT NULL
)
COLLATE='utf8mb4_general_ci'
ENGINE=InnoDB
;

project file structure

└── dcard_intern_pre_homework
    ├── app.js
    ├── models
    │   └── sqlModel.js
    ├── package.json
    ├── public
    │   └── index.html
    ├── README.md
    └── routes
        ├── alldata.js
        ├── draw.js
        └── index.js

dcard_intern_pre_homework's People

Contributors

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