mxcl

<?xml version="1.0" encoding="UTF-8"?>
<scheme name="Colbalt" version="1" parent_scheme="Default">
  <option name="LINE_SPACING" value="1.1" />
  <option name="EDITOR_FONT_SIZE" value="12" />
  <option name="EDITOR_FONT_NAME" value="Monaco" />
  <colors>
    <option name="CARET_COLOR" value="ffffff" />
    <option name="CARET_ROW_COLOR" value="133d61" />
    <option name="FOLDING_TREE_COLOR" value="466a8a" />
    <option name="INDENT_GUIDE" value="123b5f" />

rednaxelafx

import java.io.*;
import java.util.*;
import sun.jvm.hotspot.memory.*;
import sun.jvm.hotspot.oops.*;
import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.runtime.*;
import sun.jvm.hotspot.tools.*;

public class DumpClassURL extends Tool {
    public void run() {

zavakid

Rails用這套慣例來大大簡化了路由設定。那程式該怎麼寫呢? 我們在config/routes.rb加入以下一行程式：

resources :events

如此就會自動建立四個命名路由(named routes)，搭配四個HTTP動詞，對應到七個Actions。它的實際作用，就如同以下的設定：

get    '/events'          => "events#index",   :as => "events"
post   '/events'          => "events#create",  :as => "events"
get    '/events/:id'      => "events#show",    :as => "event"
put '/events/:id' => "events#update", :as => "event"

henrik

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

helena

/**
 * CloudExtension and factory for creating CloudExtension instances.
 * Example:
 * {{{
 *   val application = CloudExtension(system, config)
 * }}}
 *
 * @author Helena Edelson
 */
object CloudExtension extends ExtensionId[CloudExtension] with ExtensionIdProvider {

macintux

• https://ferd.ca/a-distributed-systems-reading-list.html
• http://the-paper-trail.org/blog/distributed-systems-theory-for-the-distributed-systems-engineer/
• https://github.com/palvaro/CMPS290S-Winter16/blob/master/readings.md
• http://muratbuffalo.blogspot.com/2015/12/my-distributed-systems-seminars-reading.html
• http://christophermeiklejohn.com/distributed/systems/2013/07/12/readings-in-distributed-systems.html
• http://michaelrbernste.in/2013/11/06/distributed-systems-archaeology-works-cited.html
• http://rxin.github.io/db-readings/
• http://research.microsoft.com/en-us/um/people/lamport/pubs/pubs.html
• http://pdos.csail.mit.edu/dsrg/papers/
• http://scalingsystems.com/2011/09/07/reading-list-for-distributed-systems/

helena

import scala.collection.immutable
import scala.collection.immutable.Queue
import akka.actor._
 
/**
 * Rough, initial cut of a trait to mixin when an Actor requires
 * initalization, where the initialization is long and arduous (for
 * example, data initialization related). This strategy allows the 
 * implementing actor to delegate the work to another Actor, on a
 * separate, dedicated Dispatcher, and not block any other related

jboner

Akka Cluster Implementation Notes

Slightly disorganized but reasonably complete notes on the algorithms, strategies and optimizations of the Akka Cluster implementation. Could use a lot more links and context etc., but was just written for my own understanding. Might be expanded later.

Links to papers and talks that have inspired the implementation can be found on the 10 last pages of this presentation.

Akka Gossip

Gossip state

This is the Gossip state representation: