Aleck Landgraf alecklandgraf

The point of this is to use cheap machines with small/slow storage to coordinate client requests while dedicating the machines with the big and fast storage to doing what they do best. I found that request coordination was contributing to about half the CPU usage on our Cassandra nodes, on average. Solid state storage is quite expensive, nearly doubling the cost of typical hardware. It also means that if people have control over hardware placement within the network, they can place proxy nodes closer to the client without impacting their storage footprint or fault tolerance characteristics.

This is accomplished in Cassandra by passing the -Dcassandra.join_ring=false option when the process is started. These nodes will connect to the seeds, cache the gossip data, load the schema, and begin listening for client requests. Messages like "/x.x.x.x is now UP!" will appear on the other nodes.

There are also some more practical benefits to this. Handling client requests caused us to push the NewSize of the heap up

Hi Nicholas,

I saw you tweet about JSX yesterday. It seemed like the discussion devolved pretty quickly but I wanted to share our experience over the last year. I understand your concerns. I've made similar remarks about JSX. When we started using it Planning Center, I led the charge to write React without it. I don't imagine I'd have much to say that you haven't considered but, if it's helpful, here's a pattern that changed my opinion:

The idea that "React is the V in MVC" is disingenuous. It's a good pitch but, for many of us, it feels like in invitation to repeat our history of coupled views. In practice, React is the V and the C. Dan Abramov describes the division as Smart and Dumb Components. At our office, we call them stateless and container components (view-controllers if we're Flux). The idea is pretty simple: components can't

	roll_die <- function(status, strategy) {
	roll = sample(c(names(status), "basket"), 1)
	if (roll == "basket") {
	trees = status[names(status) != "raven" & status > 0]
	if (strategy == "optimal") {
	biggest_trees = trees[trees == max(trees)]
	roll = sample(names(biggest_trees), 1)
	} else if (strategy == "random") {
	roll = sample(names(trees), 1)
	} else if (strategy == "worst") {

	const axios = require('axios');
	const http = require('http');
	const https = require('https');

	module.exports = axios.create({
	//60 sec timeout
	timeout: 60000,

	//keepAlive pools and reuses TCP connections, so it's faster
	httpAgent: new http.Agent({ keepAlive: true }),

	// connect() is a function that injects Redux-related props into your component.
	// You can inject data and callbacks that change that data by dispatching actions.
	function connect(mapStateToProps, mapDispatchToProps) {
	// It lets us inject component as the last step so people can use it as a decorator.
	// Generally you don't need to worry about it.
	return function (WrappedComponent) {
	// It returns a component
	return class extends React.Component {
	render() {
	return (

	//Practically all this code comes from https://github.com/alangrafu/radar-chart-d3
	//I only made some additions and aesthetic adjustments to make the chart look better
	//(of course, that is only my point of view)
	//Such as a better placement of the titles at each line end,
	//adding numbers that reflect what each circular level stands for
	//Not placing the last level and slight differences in color
	//
	//For a bit of extra information check the blog about it:
	//http://nbremer.blogspot.nl/2013/09/making-d3-radar-chart-look-bit-better.html

	from scapy.all import *
	import requests
	import time
	MAGIC_FORM_URL = 'http://put-your-url-here'

	def record_poop():
	data = {
	"Timestamp": time.strftime("%Y-%m-%d %H:%M"),
	"Measurement": 'Poopy Diaper'
	}

Aleck Landgraf alecklandgraf

The Best of the Best Practices (BOBP) Guide for Python

In General

Values

	#!/usr/bin/python
	# cannot use python3 because smbus not working there
	# Modified script from https://github.com/JasperWallace/chirp-graphite/blob/master/chirp.py
	# by DanielTamm

	import smbus, time, sys

	class Chirp:
	def __init__(self, bus=1, address=0x20):
	self.bus_num = bus

	#!/bin/sh
	# Just copy and paste the lines below (all at once, it won't work line by line!)
	# MAKE SURE YOU ARE HAPPY WITH WHAT IT DOES FIRST! THERE IS NO WARRANTY!

	function abort {
	echo "$1"
	exit 1
	}

	set -e