Programmer Group

Article directory 1. Open the SMTP service of QQ mailbox server 2. Install sendEmail 3. Send email with attachments 3.1 details of sendemail command 3.2 write the test.sh script as follows 3.3 execute script sh test.sh 4. Send email with html form 4.1 table data 4.2 the script is as follows 4.3 execution script 4.4 the scr ...

Occasionally, NanoHttpd is a Java file that starts a local server in an embedded device (for example, an Android phone) and receives local requests from clients.I carefully learned its source implementation, here I wrote a simple article in my learning order (as a learning note): Understanding official descriptions Write a Demo for use (local ...

The role of indexes With the appropriate index set, the database can greatly speed up the query speed by utilizing various fast positioning techniques. Especially when the table is large or the query involves multiple tables, using an index can speed up the query thousands of times; The IO cost of the database can be reduced, and the index can ...

Originally, I wanted to learn about Netty components first, then learn about component applications. Then, learning more and more makes me feel weird. I always feel that there is something missing. I don't know how to use components when I learn them. Think about learning from Netty applications first. Own technology learning method: first ...

Note: the number of partitions num.partitions is specified in the configuration file server.properties. This refers to the sum of the number of partitions of multiple single topic s. If there are multiple brokers, the partition may be distributed on different nodes, then the total number of all partitions of multiple brokers is ...

To use Swoole in ThinkPHP, you need to install the think Swoole composer package, provided that the system has installed the Swoole PECL extension To install think swoole, execute the composer command in the project root directory of tp5: composer require topthink/think-swoole If you don't say much, go straight to the code: To create a WebSocke ...

To use Swoole in ThinkPHP, you need to install the think Swoole composer package, provided that the system has installed the Swoole PECL extension To install think swoole, execute the composer command in the project root directory of tp5: composer require topthink/think-swoole If you don't say much, go straight to the code: To create a WebSocke ...

1.yum installation yum install epel-release yum install -y supervisor 2. Configuration fileAfter the supervisor is installed successfully, no default configuration file is provided. You can generate the initialization configuration file of the supervisor by running the echo supervisor conf program mkdir /etc/supervisor echo_supervisord_conf &g ...

Three links There are often students in the community who ask, "is my PHP program blocked, is my PHP program open (not confident about the code I wrote), and is my PHP program problematic?" then they post their own programs, and enter the happy irrigation link. As time goes on, we have not formed a systematic solution. It is better to ...

First of all, wechat users need to log in automatically to check the session. If the session expires, log in again wx.checkSession({ success: function (res) { }, fail: function (res) { console.log("Need to sign in again"); wx.login({ success(res) { if (res.code) { ...