read the algorithms of consistent hash and hash slot and articles on the network that introduce them both. It is said that consistent hash needs less data to migrate than traditional hash when deleting node or and adding nodes. There is no problem here. ...
The value of PHP md5 defaults to 32 bits. How to get 16 bits. On the Internet, there are a lot of characters that are intercepted by strings with 16 bits. Is this a reliable way? ...
the principle of ip_hash for load balancing is that the ip_hash technology in nginx can direct the request of a certain ip to the same backend. So if you encounter a down drop on one of the servers, is it impossible for the client assigned to this server...
currently guid generation is a string generated by time or randomly. now wants to generate a hash value based on the code content as the guid code content remains the same, the guid does not change. Otherwise, each build will generate a new guid . < h...
function getQuery(key) { var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)"), r = window.location.search.substr(1).match(reg); if (r != null) return decodeURI(r[2]) return null } this code is ...
there is a paragraph in the example of the conversion of URLs from non-www to www in the official Apache HTTPD documentation. RewriteCond %{HTTP_HOST} !^www .example .com [NC] RewriteCond %{HTTP_HOST} !^$ RewriteRule ^ ?(.*) http: www.example.com $1...
1. I now receive a json, on the backstage with a general content like this [{ "name ": "h ", "add ": "usa ", "good ": "[{ " comment ": " great ", " mem_na ": " a "}] 2. I used the each method to get the data of the first session, but the seco...
according to the code of Dog Book, the program push to heroku master, was successfully run as a result of heroku run python flasky.py deploy failure error report is as follows: File " app .heroku python lib python3.6 site-packages alembic script bas...
Test antd document Form in the demo code const {getFieldDecorator} = this.props.form; reported an error, found that their antd version is too low, so npm install antd@beta-save installed the latest version of antd, but my project Divider reported that th...