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mkdir zookeeper | |
cd zookeeper | |
curl -O https://cloud.github.com/downloads/globocom/zookeeper-centos-6/libzookeeper-3.4.3-2.x86_64.rpm | |
curl -O https://cloud.github.com/downloads/globocom/zookeeper-centos-6/libzookeeper-devel-3.4.3-2.x86_64.rpm | |
sudo rpm -ivh libzookeeper-3.4.3-2.x86_64.rpm | |
sudo rpm -ivh libzookeeper-devel-3.4.3-2.x86_64.rpm | |
sudo yum install git | |
sudo yum install gcc gcc-c++ kernel-devel | |
sudo yum install php-devel |
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#!/usr/bin/env node | |
'use strict'; | |
const amqp = require('amqplib'); | |
const sleep = async (ms) => new Promise(resolve => setTimeout(resolve, ms)); | |
(async () => { | |
const conn = await amqp.connect('amqp://localhost:9520'); |
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#!/usr/bin/env node | |
'use strict'; | |
const amqp = require('amqplib'); | |
const sleep = async (ms) => new Promise(resolve => setTimeout(resolve, ms)); | |
(async () => { | |
let processing = 0; |
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const numbers = [1, 4, 3, 5, 4]; | |
// sum with reduce and first value | |
numbers.reduce((sum, value) => sum + value, 0); // 17 | |
// sum with reduce, but missing first value | |
numbers.reduce((sum, value) => sum + value); // 17 | |
// average with reduce, using extra function params | |
numbers.reduce((average, value, index, array) => average + value / array.length, 0); // 3.4 |
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