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NodeJs concise tutorial will start from scratch to learn about NodeJs and help JS developers build a full stack development technology stack! Focus on getting more NodeJs articles This article is the ninth chapter of NodeJs concise tutorial. It will introduce the basic operation of NodeJs net module (TCP server/client). What is TCP? Transmissio ...

I. Preface This control is mainly used as a simple picture browser. It can turn pages up and down to display pictures. Pictures can also turn on excessive effects such as transparency gradient, application scenarios such as viewing alarm pictures and running pictures. This control is not my original, from the network, I just revised a lot of BU ...

Introduction: Using vue+element-ui to develop the front-end, node.js+express+mongodb to develop the back-end, deployed to the Ali cloud server (mirror information Node.js). 1. Apply for Aliyun Server You can apply for the cheapest one to practice. CentOS is selected for system image and Node.js is selected for application image (version 4.8.4, ...

1. Configuration file [root@es1 ~]# grep '^[a-zA-Z]' /etc/elasticsearch/elasticsearch.yml cluster.name: xing-application node.name: node-1 path.data: /var/lib/elasticsearch path.logs: /var/log/elasticsearch network.host: 0.0.0.0 cluster.initial_master_nodes: ["node-1"] http.cors.enabled: true http.cors.allow-origin: "*" discovery.seed_hosts: ...

overview 1. Class declarations String is declared final, so it cannot be inherited. Before Java 8, char arrays were used internally to store data. public final class String implements java.io.Serializable, Comparable<String>, CharSequence { /** The value is used for character storage. */ private final char value[]; } In Java 9 ...

Coding class MessageToByteEncoder   This time, we use ObjectEncoder as an example. When we need to write messages to the network channel, we need to encode the messages to determine whether the message type meets the requirements. Generally, we use type matching to configure the message in the gene ...

Graphics Worm Network - Write in front After a crackling operation, I finally wrote my blog to the 10th article. Later, it will gradually involve more crawler modules. Someone asked scrapy when to start using it. I expect it to be 30 articles later. The following routine is still slow, so don't worry. ...

Links to the original text: http://www.cnblogs.com/riasky/p/3429107.html This article installs system CENTOS 6.4 DB2 64 digits Installation involves directory locations that you can define by yourselves For security and performance cons ...

Preface It has not been updated for a long time. On the one hand, I am busy with my work, on the other hand, I am in the process of learning. Next, it should gradually return to a stable state of renewal, sharing some interesting points of knowledge and my personal thinking. Interested friends can pay attention to it! If there is something wron ...

If you need to reproduce it, please indicate the source: Flutter Learning Notes (9) --Component Widget In Flutter, all displays are Widgets, Widgets are the basis of everything. We can set data by modifying the data, and then use setState() to notify the framework. The framework will call the State's construction method again to update the use ...