Ruby Learning tips for building a ruby environment under Linux1. Preface2.Linux Installing the ruby EnvironmentFirst, prefaceThis blog post records the construction of the Ruby programming environment under Linux.This article is based on the following articles:Http://www.cnblogs.com/xfiver/archive/2012/03/08/2385833.ht
Deploy the Ruby server and ruby# Create a project directory/Opt/logs/TV-cibn-cms# Install rbenv and ruby 1.9.3 IN ruby# Install and compile related packagesYum install-y gcc openssl-devel libyaml-devel readline-devel zlib-develSu-ruby #/home/
Python and Ruby are both excellent languages, all of which emphasize people-oriented and have their own merits. However, I feel Ruby seems more friendly. Ruby draws on the advantages of smalltalk, Python, and Perl.
We recommend that you learn Ruby resources:
English
Clear and short free ebook, I think it is
When learning a new programming language, we must be clear about a few questions:What is the type model of the language?Strongly typed / weakly typed, static type / dynamic typeThe type model changes the way the problem is handled and controls how the language runsWhat is the programming paradigm of language?Object-oriented, functional, procedural, etc.How to interact with the language?Compiling, interpretingWhat is the judgment structure of language (decision construct) and the core data struct
Ruby's installation can go to Ruby's official web site to download the Ruby1.56 Windows Installer package, install the after installation, open the DOS window, input ruby-v display
Ruby 1.8.6 (2007-03-13 patchlevel 0) [I386-mswin32] shows that Ruby has been installed successfully and the version number is Ruby 1.96.
High throughput of Kafka
As the most popular open-source message system, kafka is widely used in data buffering, asynchronous communication, collection logs, and system decoupling. Compared with other common message systems such as RocketMQ, Kafka ensures most of the functions and features while providing superb read/write performance.
This article will analyze t
What is Kafka?
Kafka, originally developed by LinkedIn, is a distributed, partitioned, multi-replica, multi-subscriber, zookeeper-coordinated distributed log system (also known as an MQ system) that can be used for Web/nginx logs, access logs, messaging services, etc. LinkedIn contributed to the Apache Foundation and became the top open source project in 2010.
1. PrefaceThe performance of a co
Zookeeper uses zookeeper-3.4.7.tar.gz and kafka_2.10-0.9.0.0.tgz. First, install JDK (jdk-7u9-linux-i586.tar.gz) and SSH. The IP addresses are allocated to kafka1 (192.168.56.136), kafka2 (192.168.56.137), and kafka3 (192.168.56.138 ). The following describes how to install SSH and how to build and use zookeeper and Kafka clusters.
1. Install SSH
(1) apt-Get Install SSH
(2)/etc/init. d/ssh start
(3) ssh-keygen-t rsa-P "" (Press enter three times)
Note
Kafka Getting Started and Spring Boot integration tags: blogs[TOC]OverviewKafka is a high-performance message queue and a distributed streaming processing platform (where flows refer to data streams). Written by the Java and Scala languages, originally developed by LinkedIn and open source in 2011, is now maintained by Apache.Application ScenariosHere are some common application scenarios for Kafka.Message Queuing :
The founder of Ruby talked about the ruby blocks and closure structure at on. I want to repost on Qiu Haifeng's translation network (0) font size: T | T
This conversation is translated from the third part of the interview with Matz on the artima.com website to help you understand the blocks and closure structures in ruby.
AD:
This interview is an interview with
Kafka does not provide a high availablity mechanism in previous versions of 0.8, and when one or more broker outages, all partition on the outage cannot continue to provide services. If the broker can never be restored, or if a disk fails, the data on it will be lost. And Kafka's design goal is to provide data persistence, at the same time for the distributed system, especially when the cluster size rise to a certain extent, one or more machines down
Explain the methods in Ruby and the Ruby Methods
The Ruby method is very similar to the functions in other programming languages. The Ruby method is used to bind one or more repeated statements in a unit.
The method name should start with a lowercase letter. If the name of a method starts with an uppercase letter,
Introduction and installation of Kafka Architecture
PrefaceOr, before you learn a new thing, you must know what it is? What can this thing be used? Then you will learn and use it. To put it simply, Kafka is a message queue and now it has evolved into a distributed stream processing platform, which is amazing. Therefore, learning Kafka is very beneficial for Big D
First of all, Kafka run, need zookeeper in the background to run, although Kafka has built-in zookeeper, but we still build with their own distributed zookeeperKafka Single-node construction (with its own zookeeper)Start the service? 1, configure and start zookeeper servicesUsing Kafka built-in ZK? Configure ZK File:/opt/kafk
Kafka Installation Documentation1. Unzip ( download : http://kafka.apache.org/downloads.html)Tar-xzf kafka_2.10-0.8.2.0.tgz cd kafka_2.10-0.8.2.02. Start the server service ( including zookeeper service,Kafka service ) bin/zookeeper-server-start.sh config/zookeeper.properties ( indicates execution in the background ) bin/kafka-server-start.sh config
Project Address: Ruby-prof In the previous Profiling tool in Ruby, we listed several of the most commonly used profilers, but just a brief introduction, this time detailing how ruby-prof is used. Ruby-prof is a powerful, support CPU, memory use, object allocation and so on performance analysis, and provides a lot of fr
Analysis of Ruby relay and message-related knowledge, analysis of ruby
Inheritance allows you to create a class as the refinement and specialization of another class ). For example, in our automatic karaoke system, the concept of "Song" is encapsulated in the Song category. Then, as the market grows, we need to provide karaoke support. A karaoke song is no different from other songs (it just does not have a
reproduced original: http://www.cnblogs.com/huxi2b/p/4757098.html
How to determine the number of partitions, key, and consumer threads for Kafka
In the QQ group of the Kafak Chinese community, the proportion of the problem mentioned is quite high, which is one of the most common problems Kafka users encounter. This article unifies the Kafka source code to att
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