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@staltz
staltz / introrx.md
Last active August 27, 2025 14:59
The introduction to Reactive Programming you've been missing
@ktheory
ktheory / dd.log
Last active November 10, 2023 23:41
EC2 EBS-SSD vs instance-store performance on an EBS-optimized m3.2xlarge
# /tmp/test = EBS-SSD
# /mnt/test = instance-store
root@ip-10-0-2-6:~# dd bs=1M count=256 if=/dev/zero of=/tmp/test
256+0 records in
256+0 records out
268435456 bytes (268 MB) copied, 3.26957 s, 82.1 MB/s
root@ip-10-0-2-6:~# dd bs=1M count=256 if=/dev/zero of=/tmp/test
256+0 records in
256+0 records out
@ashrithr
ashrithr / FIleSystemOperations.java
Created February 26, 2015 01:27
HDFS FileSystems API example
package com.cloudwick.mapreduce.FileSystemAPI;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
@mrtns
mrtns / gist:78d15e3263b2f6a231fe
Last active January 19, 2025 08:02
Upgrade Chrome from Command Line on Ubuntu
# Install
# via http://askubuntu.com/questions/510056/how-to-install-google-chrome
wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
sudo sh -c 'echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list'
sudo apt-get update
sudo apt-get install google-chrome-stable
# Update
@snowindy
snowindy / spark-create-rdd-from-s3-parallel.scala
Last active September 24, 2020 12:25
This code allows parallel loading of data from S3 to Spark RDD. Support multiple paths to load from. Based on http://tech.kinja.com/how-not-to-pull-from-s3-using-apache-spark-1704509219
val s3Paths = "s3://yourbucket/path/to/file1.txt,s3://yourbucket/path/to/directory"
val pageLength = 100
val key = "YOURKEY"
val secret = "YOUR_SECRET"
import com.amazonaws.services.s3._, model._
import com.amazonaws.auth.BasicAWSCredentials
import com.amazonaws.services.s3.model.ObjectListing
import scala.collection.JavaConverters._
import scala.io.Source
@jsturgis
jsturgis / dropbox.service.md
Last active June 24, 2022 09:30
ubuntu 15.04 dropbox systemd

Install Dropbox and python script, symlink python script to /usr/local/bin/dropbox and add to your path.

/etc/systemd/system/dropbox.service contents

[Unit]
Description=Dropbox Service
After=network.target

[Service]
ExecStart=/bin/sh -c '/usr/local/bin/dropbox start'
@btfak
btfak / useHexo.md
Created May 26, 2016 09:41
How to use Hexo and deploy to GitHub Pages
@daicham
daicham / .gitlab-ci.yml
Last active November 13, 2024 07:47
A sample of .gitlab-ci.yml for a gradle project
image: java:8-jdk
stages:
- build
- test
- deploy
before_script:
# - echo `pwd` # debug
# - echo "$CI_BUILD_NAME, $CI_BUILD_REF_NAME $CI_BUILD_STAGE" # debug

Go vs. Scala (Akka) Concurrency

A comparison from 2 weeks using Go.

Actors vs. Functions

Akka's central principle is that there you have an ActorSystem which runs Actors. An Actor is defined as a class and it has a method to receive messages.

@cs8425
cs8425 / README.md
Last active February 26, 2025 11:42
How to REAL install Remix OS on VirtualBox

How to REAL install Remix OS on VirtualBox

This is how to REAL install Remix OS on VirtualBox. rootfs could be writable!!!

Needs:

  • any linux liveCD iso file (Xubuntu here)
  • Remix OS iso file ("Remix_OS_for_PC_Android_M_32bit_B2016092201.iso" here)
  • VirtualBox