[{"createTime":1735734952000,"id":1,"img":"hwy_ms_500_252.jpeg","link":"https://activity.huaweicloud.com/cps.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=V1g3MDY4NTY=&utm_medium=cps&utm_campaign=201905","name":"华为云秒杀","status":9,"txt":"华为云38元秒杀","type":1,"updateTime":1735747411000,"userId":3},{"createTime":1736173885000,"id":2,"img":"txy_480_300.png","link":"https://cloud.tencent.com/act/cps/redirect?redirect=1077&cps_key=edb15096bfff75effaaa8c8bb66138bd&from=console","name":"腾讯云秒杀","status":9,"txt":"腾讯云限量秒杀","type":1,"updateTime":1736173885000,"userId":3},{"createTime":1736177492000,"id":3,"img":"aly_251_140.png","link":"https://www.aliyun.com/minisite/goods?userCode=pwp8kmv3","memo":"","name":"阿里云","status":9,"txt":"阿里云2折起","type":1,"updateTime":1736177492000,"userId":3},{"createTime":1735660800000,"id":4,"img":"vultr_560_300.png","link":"https://www.vultr.com/?ref=9603742-8H","name":"Vultr","status":9,"txt":"Vultr送$100","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":5,"img":"jdy_663_320.jpg","link":"https://3.cn/2ay1-e5t","name":"京东云","status":9,"txt":"京东云特惠专区","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":6,"img":"new_ads.png","link":"https://www.iodraw.com/ads","name":"发布广告","status":9,"txt":"发布广告","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":7,"img":"yun_910_50.png","link":"https://activity.huaweicloud.com/discount_area_v5/index.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=aXhpYW95YW5nOA===&utm_medium=cps&utm_campaign=201905","name":"底部","status":9,"txt":"高性能云服务器2折起","type":2,"updateTime":1735660800000,"userId":3}]
1.雪花算法原理:
Snowflake是Twitter提出的一个算法,其目的是生成一个64位的整数;
0b11111110101111100001010000100000000100010000000010000000000001
1位:一般是符号位,不做处理
41位:用来记录时间戳(可以记录69年)
10位:前五位(机房编号/数据中心)后五位(机器编号)
12位:循环位(随机数),对于同一毫秒产生的不同id,12位最高可以记录4095个,也就是最多记录4095个,超过的需要的下一毫秒
2.雪花算法实现:
1>下载库
pip install pysnowflake
2>启动服务
#安装完成后,就可以在本地命令行启动snowflake服务 snowflake_start_server --worker=1
3>代码实现
#生成唯一id import snowflake.client print(snowflake.client.get_guid())
#4589032814791368705 #解析成二进制 print(bin(4589032814791368705))
#0b11111110101111100001010000100000000100010000000010000000000001
#可以看到上文所述的第一位是标识符,此后是41位的时间戳,紧接着10位的节点标识码,最后12位的递增序列,从后面数12位是:000000000001,再数5位是:00010
这5位就是某个节点的存储标识,但是它目前是二进制,我们再将它转换为十进制 print(int('00010',2)) #5