| /* | |
| * To change this license header, choose License Headers in Project Properties. | |
| * To change this template file, choose Tools | Templates | |
| * and open the template in the editor. | |
| */ | |
| package com.kabaso.calculator.service.Impl; | |
| import com.kabaso.calculator.service.CalculatorService; | |
| package main | |
| import ( | |
| "github.com/gocql/gocql" | |
| "github.com/SlyMarbo/rss" | |
| "log" | |
| "crypto/md5" | |
| "encoding/hex" | |
| "time" | |
| "fmt" |
| # Tweaked from http://tomislavsantek.iz.hr/2011/03/moving-mysql-databases-to-ramdisk-in-ubuntu-linux | |
| # Log in as root | |
| # Mount ramdisk folder in RAM | |
| mkdir /tmp/ramdisk | |
| mount -t tmpfs -o size=128M tmpfs /tmp/ramdisk/ | |
| # Move MySQL data | |
| mv /var/lib/mysql /tmp/ramdisk/mysql | |
| ln -s /tmp/ramdisk/mysql/ /var/lib/mysql |
| UPDATE wp_options SET option_value = replace(option_value, 'http://www.oldsite.com', 'http://www.newsite.com') WHERE option_name = 'home' OR option_name = 'siteurl'; | |
| UPDATE wp_posts SET guid = replace(guid, 'http://www.oldsite.com','http://www.newsite.com'); | |
| UPDATE wp_posts SET post_content = replace(post_content, 'http://www.oldsite.com', 'http://www.newsite.com'); | |
| UPDATE wp_postmeta SET meta_value = replace(meta_value, 'http://www.oldsite.com', 'http://www.newsite.com'); |
| docker build -t bonifacekabaso/cassandrad:2.2.6 \ | |
| --build-arg http_proxy="http://[USER]:[PASSWD]@[IP]:[PORT]" \ | |
| --build-arg https_proxy="http://[USER]:[PASSWD]@[IP]:[PORT]" \ | |
| . |
| -XX:MaxPermSize=384M | |
| -Dhttps.proxyHost=10.18.8.9 | |
| -Dhttps.proxyPort=3128 | |
| -Dhttps.proxyUser=user | |
| -Dhttps.proxyPassword=pass | |
| -Dhttp.proxyHost=10.18.8.9 | |
| -Dhttp.proxyPort=3128 | |
| -Dhttp.proxyUser=user | |
| -Dhttp.proxyPassword=passwd |
Copyright © 2017 Fantasyland Institute of Learning. All rights reserved.
A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.
val square : Int => Int = x => x * x
| Latency Comparison Numbers | |
| -------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
| #!/bin/bash | |
| docker run --name CasDC1SeedOne \ | |
| -e WEAVE_CIDR=10.10.10.5/16 \ | |
| -e CASSANDRA_CLUSTER_NAME=CPUT \ | |
| -e CASSANDRA_DC=DC1 \ | |
| -e CASSANDRA_RACK=RC1 \ | |
| -e CASSANDRA_ENDPOINT_SNITCH=GossipingPropertyFileSnitch \ | |
| -v /data/cassandra/node1:/var/lib/cassandra \ | |
| -e CASSANDRA_SEEDS=10.10.10.5,10.10.10.15 \ |
apt-get update && apt-get install -y apt-transport-https
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add
deb http://apt.kubernetes.io/ kubernetes-xenial main