Tag:many

  • Semantic analysis of Java multithreaded volatile memory

    Time:2020-10-13

    This article mainly introduces the Java Multithread volatile memory semantic analysis, the article introduces in detail through the example code, which has certain reference learning value for everyone’s study or work, and friends in need can refer to it Volatile keyword is the most lightweight synchronization mechanism provided by Java virtual machine. Since volatile keyword […]

  • MySQL backs up multiple database code instances

    Time:2020-6-16

    This article mainly introduces the MySQL backup of multiple database code examples. The example code is introduced in detail in this article, which has a certain reference value for your study or work. You can refer to the following for your friends Backup data script #!/bin/bash #Date is a Linux command date [parameter] [+ format] […]

  • Code analysis of wechat applets with multi selection effect

    Time:2020-2-22

    This article mainly introduces the implementation of code analysis by selecting all and selecting multiple effects of wechat small programs. The example code is introduced in detail in this article, which has certain reference learning value for everyone’s study or work. You can refer to the following for your friends Design sketch: Wxml Code: <view> […]

  • Mysql Error: A Solution to Too Many Connections

    Time:2019-7-27

    MySQL database Too many connections The obvious mistake is to forget mysql_close after mysql_connect. When there are a lot of connections, there will be Too many connections errors. Mysql defaults to 100 connections, and under what circumstances will such errors occur? After normal mysql_connect, call mysql_close() to close the connection However, when the connection error […]