前一阵子去看 java 虚拟机原理, 忽然痛悟到虚拟机也是机器啊, 呵呵也就是个软件而已. 看到 java 方法调用太复杂. 字节码那一套又不太熟悉, 还不如直接去看 C 编

analysis01 设计理念 机制与策略分离 机制 – 提供什么样的功能 策略 – 如何使用这些功能 说实在的这句话第一次听到还是挺震撼的, 一时觉得大学里的操作系统都不知道在

添加 openjdk8 的第三方源 sudo add-apt-repository ppa:openjdk-r/ppa ppa (Personal Package Achives) 执行更新 apt-get update 安装 openjdk8 sudo apt-get install openjdk-8-jdk 选择版本 sudo update-alternatives - -config java 确认安装成功 java -version

The Transmission Control Protocol (TCP) is intended for use as a highly reliable host-to-host protocol between hosts in packet-switched computer communication networks, and in interconnected systems of such networks. TCP header format basic data transfer reliability sequence number acknowledgement flow control window size multiplexing socket (ip, port) connections Each connection is uniquely specified by a pair of sockets identifying its two sides.(source ip, source port),(destination ip, destination port) sockets sequence

git rebase -i HEAD~N 复制提交记录 git branch -f target-branch-name commit-id 切换到 target-branch-name 并指向 commit-id git cherry-pick commit-id1 commit-id2 重新排序提交的记录. cherry-pick 名字起得真是有意思啊. 像捡樱桃似的, 把一个个想要的记录捡到当前分

storage Disk Controller 我们知道定位一个磁盘空间需要三个参数(platter, track, sector). 但是 cpu 不使用这么麻烦的方式, cpu 使用的是逻辑盘号. 也就是磁盘控制器将逻辑盘号翻

Docker images are built based on a Dockerfile. A Dockerfile defines all the steps required to create a Docker image with your application configured and ready to be run as a container. The image itself contains everything, from operating system to dependencies and configuration required to run your application. Having everything within the image allows you to migrate images between different environments and be confident that if it works in one environment, then it will work in another.

Create a Dockerfile Docker Images start from a base image. The base image should include the platform dependencies required by your application, for example, having the JVM or CLR installed. This base image is defined as an instruction in the Dockerfile. Docker Images are built based on the contents of a Dockerfile. The Dockerfile is a list of instructions describing how to deploy your application. # base image FROM nginx:alpine # copies the content of the current directory into a particular location (/usr/share/nginx/html)inside the container.

Running a container background(detached) docker search image-name docker search redis docker run options image-name:version solution1: default latest version docker run -d redis solution2: version is 3.2 docker run -d redis:3.2 Find running container docker ps docker inspect <container-id> docker logs <container-id> Access redis note: each docker container is sandboxed solution1: specify host port is 6379 -p host-port:container-post docker run -d --name redisHostPort -p 6379:6379 redis:latest solution2: specify randomly host port -p container-port