alanzeino

LLDB Debugging Cheat Sheet

Commands

LLDB Commands

LLDB comes with a great set of commands for powerful debugging.

help

Your starting point for anything. Type help to get a list of all commands, plus any user installed ones. Type 'help for more information on a command. Type help to get help for a specific option in a command too.

pfrazee

using reputation systems to create shared function-critical datastructures in open networks

Search engines, spam filtration, and p2p protocols - all need to rate the value of information. Search engines need it to provide good results; spam filtration needs it to exclude noise; and p2p networks need it for security and efficiency.

What is "value?" I'll use two dimensions:

• Quality (how useful the information is). The more permissive participation is, the greater the need for quality-ranking. Term-frequency search alone fails for the Web, because the Web doesn't prefilter for quality.
• Trust (how safe the information is to use). The more function-critical the information is, the greater the need for trust-ranking. If a DHT's host-lookup can be manipulated to flood an unsuspecting computer (a DDoS) then the DHT is unsound.

acolyer

Internet Scale Services Checklist

A checklist for designing and developing internet scale services, inspired by James Hamilton's 2007 paper "On Desgining and Deploying Internet-Scale Services."

• http://mvdirona.com/jrh/talksandpapers/jamesrh_lisa.pdf

Basic tenets

• Does the design expect failures to happen regularly and handle them gracefully?
• Have we kept things as simple as possible?

Stwissel

		var httpProxy = require('http-proxy');
		
		// Create an array of selects that harmon will process. 
		var actions = [];
		var actionOne = {};
        actionOne.query ='body';
		actionOne.func = function (node) {
							var out = '<h1>You have been proxied</h1>';
							node.createWriteStream({ outer: true }).end(out);
							console.log("body function called: " + out);

sa2ajj

Riak with Docker: Brain Dump

Note

For the actual food for mind see https://gist.github.com/sa2ajj/5323326#file-summary-rst

This document _tries to outline important items that need to be covered in order to get riak running with docker.

clemensg

#include <stdio.h>
#include <stdlib.h>
#include <uv.h>
#include <curl/curl.h>

uv_loop_t *loop;
CURLM *curl_handle;
uv_timer_t timeout;

typedef struct curl_context_s {

adamwdraper

var fs = require('fs');

var walkPath = './';

var walk = function (dir, done) {
    fs.readdir(dir, function (error, list) {
        if (error) {
            return done(error);
        }

rockbot

AI.js: Robots with Brains!

Once upon a time, there was a roboticist. She spent eight years working with robots of various shapes, sizes, and intelligence levels - her specialty was in planning and navigation algorithms (useful for driverless cars, rescue robots, etc.). Eager for some fresh air away from the lab, she switched gears and started developing a better Internet with JavaScript and Node.js.

In her time away, however, her little robot friends have also learned JavaScript! The likes of Johnny-Five and NodeCopter have breathed new life into those traditionally Python/C++-controlled machines, and our favorite roboticist's little vacation has come to a close.

Whereas 2012 was the start of moving, reactive robots programmed in JavaScript, 2013 will be the year of the smarter, autonomous robot! Task driven and data oriented, they will be the most intelligent JS robots you've ever seen - and they'll be the founders of the robot.js of tomorrow.

In this talk, we will discuss and review examples of

No9

var http = require('http'),
    httpProxy = require('http-proxy'),
    trumpet = require('trumpet');

httpProxy.createServer(
  function (req, res, next) {
    
    var _write = res.write;
    
    res.write = function (data) {