Use of Stream stream

This article mainly explains the use of Stream stream in JDK8, including how to filter, slice, map, find, match, reduce and so on. Each type will have corresponding cases which are easy to understand   1. The concept of stream Stream API is a new key component of JDK8 to process collection. The stream stream here is different from I/O stre ...

Posted on Tue, 25 Feb 2020 03:50:22 -0500 by GreenCore

Notes for beginners of Python

Face to face programming: write classes that represent things and scenes in the world, and create objects based on these classes. The created objects are called instantiations. Create class class Dog(): #The first letter in the class name in Python should be capitalized def __init__(self, name, age): #The functions in the class are ...

Posted on Sat, 22 Feb 2020 02:24:29 -0500 by fansphp

Redis cluster deployment

1, Redis cluster related conceptsRedis supports cluster since version 3.0. It adopts the hash slot method, which can integrate multiple redis instances to form a cluster, that is, to store data on multiple nodes in the cluster. Redis cluster is a decentralized structure. In a cluster, the identity of each master is equal. Each node saves data ...

Posted on Thu, 13 Feb 2020 07:28:09 -0500 by deezzer

Linux server implements Redis cluster

1, About Redis Redis is a large-scale cache middleware, which is widely used because of its powerful, efficient and convenient functions. Redis released 3.0.0 in 2015, and the official supports redis cluster. In the design of redis cluster, decentralization and middleware are considered. In other words, ...

Posted on Thu, 13 Feb 2020 03:35:50 -0500 by mu-ziq

python programming, from introduction to practice: Chapter 6

python programming, from introduction to practice: Chapter 6 6-1 person: use a dictionary to store information about an acquaintance, including first name, last name, age and city of residence. The dictionary should contain the keys first name, last name, age, and city. Print out every item of informa ...

Posted on Wed, 22 Jan 2020 05:08:55 -0500 by feeta

redis pseudo cluster construction (no pit in pro test)

1, For the installation and deployment of the stand-alone version, the pseudo cluster only needs 1-8 steps before operation, and then browse to find: 2. For the installation and deployment of the stand-alone version - pseudo cluster, continue to build. If you need to set the password, please refer to step 10 1. Installation of basic tools yu ...

Posted on Fri, 17 Jan 2020 23:27:04 -0500 by show8bbs

Python basics summary (short notes)

Python is a cross platform computer programming language. It is an object-oriented dynamic type language. Notes include the basic skills of compiling and installing python, python list, dictionary, tuple, file operation and other commands. ◆ compiling and installing Python Python development environment installation and configuration is very si ...

Posted on Tue, 14 Jan 2020 04:53:32 -0500 by mattchewone

redis deployment cluster depends on ruby

1. Installed toolkit dependent environment   yum install -y gcc-c++ patch readline readline-devel zlib zlib-devel libyaml-devel libffi-devel openssl-devel make bzip2 autoconf automake libtool bison sqlite-devel iconv-devel 2. Install rvm (ruby management tool) curl -L get.rvm.io | bash -s stable If the following error ...

Posted on Mon, 06 Jan 2020 11:02:31 -0500 by mikerh9

Implementation of star rating effect in mobile terminal

Star rating is often used in web pages. Today, native JS is specially used to achieve star rating effect in mobile terminals. Because there is no mouse event in the mobile terminal, the implementation of star rating effect in the mobile terminal is slightly different from that in the pc terminal, that is, to turn the correspond ...

Posted on Sun, 05 Jan 2020 22:04:20 -0500 by limpo

Redis - redis cluster deployment

Experimental environment Simulate 6 servers with 2 servers (add network card) Primary server Redis1: ens33: 192.168.52.150 ens36: 192.168.52.153 ens37: 192.168.52.154 From server Redis2: ens33: 192.168.52.148 ens36: 192.168.52.155 ens37: 192.168.52.156 1. Install Redis on both servers (the operation is the same, onl ...

Posted on Mon, 23 Dec 2019 09:06:19 -0500 by backie