node+js for large file fragment upload

1. What is fragment upload Fragment upload is the transmission of a large file into several blocks, one by one. The benefit of doing so can reduce the overhead of re uploading. For example: if the file we upload is a large file, the upload time should be long. In addition to the influence of various factors of network instability, it is easy t ...

Posted on Tue, 05 May 2020 15:23:53 -0700 by affordit

DES, RSA (segmented encryption and decryption) two commonly used encryption methods in Android

DES encryption and decryption public class DESEncrypt { /** * DES Decrypt * @param decryptString ciphertext * @param ivStr Encryption key * @param keyStr Encryption offset * @return Plaintext * @throws Exception exception */ public static String decrypt(String decryptStri ...

Posted on Tue, 05 May 2020 12:00:42 -0700 by lathifmca

Simple practice of java Socekt

1 foreword In java, network communication is generally socket based. Here is a simple example of socket communication 2 socket communication practice Let's see the server first /** * @author Created by qiyei2015 on 2018/1/5. * @version: 1.0 * @email: 1273482124@qq.com * @description: */ public class SocketServe ...

Posted on Tue, 05 May 2020 00:19:46 -0700 by Pilly

Python orchestration & asyncio & asynchronous programming

Python orchestration & asyncio & asynchronous programming 1. Cooperation The coroutine is a kind of micro thread, and it is a kind of context switching technology of user state. Through a thread, the code blocks can be switched to each other for execution There are several ways to implement a collaboration: greenlet, early modules ...

Posted on Mon, 04 May 2020 21:28:26 -0700 by Dave100

Processes above JobService and jobscheduler Android 5.0 are alive

Processes above JobService and jobscheduler Android 5.0 are alive Android 5.0 adds a new job scheduler API that allows you to define jobs that the system runs asynchronously at a later time or under specified conditions, such as when the device is charging, to optimize battery life. The job scheduling function is use ...

Posted on Mon, 04 May 2020 17:47:47 -0700 by anushka

Native js dynamically displays static page content according to url parameters

In the project, we need to do static processing for the content, only loading an h5 page can display the content, instead of loading resource files such as. css or. js to improve the page loading speed. The static content displayed on the page can be divided into three languages, so it needs to be processed dynamically. ...

Posted on Mon, 04 May 2020 13:54:33 -0700 by estan

statefulset stateful cluster deployment for k8s

pod resources in k8s are divided into stateful (data type container) and stateless (service type container). Data storage in k8s generally mounts storage volumes with volumes. In multi-node cluster mode, the best solution is to provide a storage system (storage system selection conditions: remote access, multi-threaded read and write, etc.), n ...

Posted on Mon, 04 May 2020 12:17:43 -0700 by php_guy

ajax long connection return data cannot enter success status is cancelled

Front end implementation: function ajaxLongConn(){ $.ajax({ type : "POST",// //Async: true, / / synchronous execution timeout :180000,//The single timeout long connection time is three minutes url : "${ctx}/pollModel/timerPollReport.html", ...

Posted on Sun, 03 May 2020 23:57:03 -0700 by webmaster02

Crawling World Epidemic Data to Map Visualization of Epidemics

Find a target site First find a data interface For example, find this website https://xw.qq.com/act/qgfeiyan?pgv_ref=3gqtb&ADTAG=3gqtb Then the right mouse button opens the check Find the Network and select XHR Then refresh the page Select ranklist preview shows that we have the data information we need here The interface ad ...

Posted on Sun, 03 May 2020 23:21:34 -0700 by nalleyp23

java get ip address and network interface

Network related objects are in the java.net package. 1. Get the host object InetAddress //Get local host object InetAddress host = InetAddress.getLocalHost(); //Obtain the host object according to ip address or host name. DNS resolution is required when obtaining the host by host name InetAddress host = InetAddress.getByName("192.168.100 ...

Posted on Sun, 03 May 2020 11:45:54 -0700 by jug