henrik

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

kimble

package com.developerb.dropwizard;

import com.yammer.dropwizard.AbstractService;
import com.yammer.dropwizard.Service;
import com.yammer.dropwizard.cli.Command;
import com.yammer.dropwizard.config.Configuration;
import org.junit.rules.TestRule;
import org.junit.runner.Description;
import org.junit.runners.model.Statement;

jboner

Latency Comparison Numbers (~2012)
----------------------------------
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

tcovo

package com.example;

import com.google.common.base.Charsets;
import com.google.common.io.Resources;
import com.yammer.dropwizard.Service;
import com.yammer.dropwizard.cli.EnvironmentCommand;
import com.yammer.dropwizard.config.Configuration;
import com.yammer.dropwizard.config.Environment;
import com.yammer.dropwizard.config.ServerFactory;
import com.yammer.dropwizard.lifecycle.ServerLifecycleListener;

kissgyorgy

# prevent the creation of .DS_Store files on network drives
# http://hints.macworld.com/article.php?story=2005070300463515

defaults write com.apple.desktopservices DSDontWriteNetworkStores true
#---------------------------------------------------------------------

# Disable/enable Dashboard:
# http://hints.macworld.com/article.php?story=20050723123302403

defaults write com.apple.dashboard mcx-disabled -boolean YES

jnschulze

#!/bin/bash

# Size at the end is * 2048 where 2048 = 1 MB, so 1572864 = 768 MB
#DISK=`/usr/bin/hdiutil attach -nobrowse -nomount ram://1572864`
DISK=`/usr/bin/hdiutil attach -nobrowse -nomount ram://2097152`

/usr/sbin/diskutil erasevolume HFS+ "RamDiskCache" $DISK

CACHEDIR="/Volumes/RamDiskCache/$USER"

jboner

# How Akka maps to EAI Patterns

Might be up for debate or just plain wrong. Just some notes I scribbled down some time ago. 

-----------------------------------------------------------------------------------------------------------------
EAI PATTERN                     AKKA PATTERN                  REFERENCE
-----------------------------------------------------------------------------------------------------------------
Point to Point Channel          Regular Actor Communication   http://www.eaipatterns.com/PointToPointChannel.html
Event-Driven Consumer           Regular Actor Receive         http://www.eaipatterns.com/EventDrivenConsumer.html
Message Selector                Actor with Stash              http://www.eaipatterns.com/MessageSelector.html

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

jon-ruckwood

jq

Transform JSON into a table to displayed in a terminal:

$ aws dynamodb describe-table --table-name foobar | jq -r "[ .Table.GlobalSecondaryIndexes[] 
    | { IndexName, IndexStatus, Backfilling } ] 
    | (.[0] | keys | @tsv), (.[] | map(.) | @tsv)"

Backfilling IndexName IndexStatus

akarnokd

package hu.akarnokd.reactiveflowbridge;

import java.util.Objects;
import java.util.concurrent.Flow;
import java.util.function.Function;

/**
 * Bridge between Reactive-Streams API and the Java 9 Flow API.
 */
public final class ReactiveFlowBridge {