DevSpring

2017-09-04

Spring Bean

Bean attributes Attribute Description class Necessary, define the class used to create the bean name unique name identifier, you can use “id” or “name” in XML scope Define the scope of bean

DevSpring

2017-09-02

Spring Framework Intro

BeanFactoryIt’s a simple container which provides Dependency Injection. It’s defined in org.springframework.beans.factory.BeanFactor.There are many instances of BeanFactory, one of the most used is X

OpsJenkins

2017-08-21

Backup hexo and auto deploy with Jenkins

Finaly, I am able to update the blog again. I was trying to back up the whole project of the hexo blog and messed up……I guess it’s easier for you to watch other people’s experience rather than do it y

DevTheory

2017-08-16

Big O Cheat sheets

Algorithm Structure Time:Best Time:Average Time:Worst Space:Worst Quick sort Array O(n log(n)) O(n log(n)) O(n2) O(n) Merge sort Array O(n log(n)) O(n log(n)) O(n log(n)) O(n) Heap sort Ar

2017-07-15

Linux Configuration Files

mysql configuration file~/.my.cnf 启动引导程序配置文件12LILO /etc/lilo.confGRUB /boot/grub/menu.lst 系统启动文件核脚本1234主启动控制文件 /etc/inittabSysV启动脚本的位置 /etc/init.d、/etc/rc.d/init.d或/etc/rc.dSysV启动脚本链接的位置 /etc/init.d/r

DevJava

2017-06-15

JVM parameters

参数名称含义默认值 -Xms 初始堆大小物理内存的1/64(<1GB) 默认(MinHeapFreeRatio参数可以调整)空余堆内存小于40%时，JVM就会增大堆直到-Xmx的最大限制. -Xmx 最大堆大小物理内存的1/4(<1GB) 默认(MaxHeapFreeRatio参数可以调整)空余堆内存大于70%时，JVM会减少堆直到 -Xms的最小限制

OpsLinux

2017-06-15

An A-Z Index of the Bash command line for Linux

name Description alias Create an alias • apropos Search Help manual pages (man -k) apt-get Search for and install software packages (Debian/Ubuntu) aptitude Search for and install softwa

OpsLinux

2017-05-13

Most used Linux commands

Unzip bz2 keep the original filebzip2 -dk filename.bz2 Find out the current Linux versioncat /etc/*-release ssh-keygen -f id_rsa -p Check hardwarelshw Change java versionupdate-alternatives -config ja

OpsDocker

2017-04-16

Docker machine commands

If you are using a mac, just like a linux, you don’t need docker-machine to run docker-engine locally Basics operation123456docker-machine --versiondocker-machine start defaultdocker-machine stop def

DevYAML