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Golang\n\n### TODO\n- [x] 使用 go module\n- [ ] 各抽奖例子不再依赖 iris，独立成模块\n\n### 6 种抽奖小栗子\n\u003e 关键点：奖品类型，数量有限，中奖概率，发奖规则  \n\u003e 并发安全性问题：互斥锁，队列，CAS递减（atomic）  \n\u003e 优化：通过三列减少单个集合的大小\n\n- [年会抽奖](./_demo/1annualMeeting)\n- [彩票刮奖](./_demo/2ticket)\n- [微信摇一摇](./_demo/3wechatShake)\n- [支付宝集福卡](./_demo/4alipayFu)\n- [微博抢红包](./_demo/5weiboRedPacket)\n- [大转盘](./_demo/6wheel)\n\n### govendor 包管理工具\n#### 安装\n\n```shell\ngo get -u -v github.com/kardianos/govendor\n```\n\n#### 初始化\n\n```shell\n# 在当前目录生成 vendor 文件夹\ngovendor init\n```\n\n#### 导入项目依赖包\n\n```shell\n# 将项目使用的包导入 vendor 文件夹\n# 缩写： govendor add +e\ngovendor add +external\n```\n\n#### 本地同步依赖包\n\n```shell\n# 重新安装依赖包到 vendor 文件夹\ngovendor sync\n```\n    \n### 数据设计 - MySQL\n#### 奖品表 - gift\n| 字段 | 属性 | 说明 |\n| --- | --- | --- |\n| id | int,pk,auto_increment | 主键 |\n| title | varchar(255) | 奖品名称 |\n| prize_num | int | 奖品数量：0 无限；\u003e0 限量；\u003c0 无奖品 |\n| left_num | int | 剩余奖品数量 |\n| prize_code | varchar(50) | 0-9999 标识 100%，0-0 表示万分之一的中奖概率 |\n| prize_time | int | 发奖周期：D 天 |\n| img | varchar(255) | 奖品图片 |\n| display_order | int | 位置序号：小的排在前面 |\n| gtype | int | 奖品类型：0 虚拟币；1 虚拟券；2 实物-小奖；3 实物-大奖 |\n| gdata | varchar(255) | 扩展数据：如虚拟币数量 |\n| time_begin | datetime | 开始时间 |\n| time_end | datetime | 结束时间 |\n| prize_data | mediumtext | 发奖计划：[[时间 1，数量 1]，[时间 2，数量 2]] |\n| prize_begin | datetime | 发奖周期的开始 |\n| prize_end | datetime | 发奖周期的结束 |\n| sys_status | smallint | 状态：0 正常；1 删除 |\n| sys_created | datetime | 创建时间 |\n| sys_updated | datetime | 修改时间 |\n| sys_ip | varchar(50) | 操作人 IP |\n\n#### 优惠券 - code\n| 字段 | 属性 | 说明 |\n| --- | --- | --- |\n| id | int,pk,auto_increment | 主键 |\n| gift_id | int | 奖品 ID，关联 gift 表 |\n| code | varcahr(255) | 虚拟券编码 |\n| sys_created | datetime | 创建时间 |\n| sys_updated | datetime | 更新时间 |\n| sys_status | smallint | 状态：0 正常；1 作废；2 已发放 |\n\n#### 抽奖记录表 - result\n| 字段 | 属性 | 说明 |\n| --- | --- | --- |\n| id | int,pk,auto_increment | 主键 |\n| gift_id | int | 奖品 ID，关联 gift 表 |\n| gift_name | varchar(255) | 奖品名称 |\n| gift_type | int | 奖品类型：同 gift.gtype |\n| uid | int | 用户 ID |\n| username | varchar(50) | 用户名 |\n| prize_code | int | 抽奖编号（4 位的随机数） |\n| gift_data | varchar(50) | 获奖信息 |\n| sys_created | datetime | 创建时间 |\n| sys_ip | varchar(50) | 用户抽奖的 IP |\n| sys_status | smallint | 状态：0 正常；1 删除；2 作弊 |\n\n#### 用户黑名单表 - black_user\n| 字段 | 属性 | 说明 |\n| --- | --- | --- |\n| id | int,pk,auto_increment | 主键 |\n| username | varchar(50) | 用户名 |\n| black_time | datetime | 黑名单限制到期时间 |\n| real_name | varchar(50) | 联系人 |\n| mobile | varchar(50) | 手机号 |\n| address | varchar(255) | 联系地址 |\n| sys_created | datetime | 创建时间 |\n| sys_updated | datetime | 更新时间 |\n| sys_ip | varchar(50) | 用户抽奖的 IP |\n\n#### IP 黑名单表 - black_ip\n| 字段 | 属性 | 说明 |\n| --- | --- | --- |\n| id | int,pk,auto_increment | 主键 |\n| ip | varchar(50) | IP 地址 |\n| black_time | datetime | 黑名单限制到期时间 |\n| sys_created | datetime | 创建时间 |\n| sys_updated | datetime | 更新时间 |\n\n#### 用户每日次数表 - user_day\n| 字段 | 属性 | 说明 |\n| --- | --- | --- |\n| id | int,pk,auto_increment | 主键 |\n| uid | int | 用户 ID |\n| day | varchar(8) | 日期：如 20180725 |\n| num | int | 次数 |\n| sys_created | datetime | 创建时间 |\n| sys_updated | datetime | 更新时间 |\n\n### 缓存设计\n\n#### 基本要求\n- 目标：提高系统性鞥，减少数据库依赖\n- 原则：平衡好\"系统性能、开发时间、复杂度\"\n- 方向：数据读多写少，数据量有限，数据分散\n\n#### 使用位置\n- 奖品：数量少，更新频率低，最佳的全量缓存对象\n- 优惠券：一次性导入，优惠券编码缓存为 set 类型\n- 中奖记录：读写差不多，可以缓存部分统计数据，如：最新中奖记录，最近大奖发放记录等\n- 用户黑名单：读多写少，可以按照 uid 散列\n- IP 黑名单：类似用户黑名单，可以按照 IP 散列\n- 用户每日参与次数：读写次数差异没有用户黑名单那么明显，缓存后的收益不明显\n\n### 系统目录\n\n├── [_demo](./_demo) - 抽奖程序栗子目录  \n├── [bootstrap](./bootstrap) - 程序启动相关  \n├── [comm](./comm) - 公共代码  \n├── [conf](./conf) - 配置相关  \n├── [cron](./cron) - 定时任务  \n├── [dao](./dao) - 数据库相关操作  \n├── [services](./services) - 数据服务类相关  \n├── [dataSource](./dataSource) - 数据源  \n├── [utils](./utils) - 通用工具  \n├── [script](./script) - 独立运行的脚本  \n├── [thrift](./thrift) - RPC thrift 相关的  \n├── [vendor](./vendor) - 项目依赖包   \n└── [weh](./web) - 网站相关  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;├── [controllers](./web/controllers) - 控制器  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;├── [middleware](./web/middleware) - 中间件  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;├── [public](./web/public) - 静态文件  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;├── [routes](./web/routes) - 路由  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;├── [views](./web/views) - 模板  \n\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;└── [viewModels](./web/viewModels) - 模板数据模型  \n\n### commit 规范\n- [dev] + 新增的内容\n- [upd] + 更新的内容\n\n未完待续。。。\n\n如有错误，务必指出，谢谢 ^.^ !\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fgoodcan%2Fgo-lottery","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fgoodcan%2Fgo-lottery","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fgoodcan%2Fgo-lottery/lists"}