Max Riveiro kavu

Frontend Development

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Введение

Начать стоит отсюда. Не пугайтесь то, что это книга по незнакомой OS, эти термины практически везде одинаковые и здесь они изложены в понятной для начинающих форме.

http://www.qnx.com/developers/docs/6.4.1/neutrino/getting_started/s1_procs.html

Прочесть нужно треть главы до подраздела "Starting a process", если С не пугает, читайте полностью. После прочтения вы будете понимать, что такое process, thread, mutex, priorites, semaphores, scheduler, contex-switch, kernel states.

Ruby

Используя фреймворк Ruby on Rails необходимо создать веб-приложение, которое содержит следующее:

Модели:

Экскурсия (аттрибуты: заголовок, описание, признак публикации)
Категории экскурсии (n-n). Например, историческая, городская, природная, музейная и т.д.
Город экскурсии (1-n).

Клиентская часть:

Patch for ruby 1.9.3-p385 without backport-gc:

Patch for ruby 1.9.3-p385 with backport-gc:

rbenv instructions https://gist.github.com/samgranieri/4772546

Changes:

this version includes backport of Greg Price's patch for speedup startup http://bugs.ruby-lang.org/issues/7158 .

ruby-core prefers his way to do thing, so that I abandon cached-lp and sorted-lf patches of mine.
this version integrates 'array as queue' patch, which improves performance when push/shift pattern is heavily used on Array.

This patch is accepted into trunk for Ruby 2.0 and last possible bug is found by Yui Naruse. It is used in production* for a couple of months without issues even with this bug.

Enable SPDY for your Erlang website

By Ward Bekker

Google's Strange Loop presentation Making the Web Faster inspired me to enable SPDY on one of my side projects Zin In Sushi. This simple sushi restaurant review site is build in Erlang using Basho's Webmachine in combination with Erlydtl.

Below is a quick writeup of the steps needed.

Assumptions:

	// Just before switching jobs:
	// Add one of these.
	// Preferably into the same commit where you do a large merge.
	//
	// This started as a tweet with a joke of "C++ pro-tip: #define private public",
	// and then it quickly escalated into more and more evil suggestions.
	// I've tried to capture interesting suggestions here.
	//
	// Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_,
	// @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant,

	#include <IRremote.h>

	// http://www.pjrc.com/teensy/td_libs_IRremote.html
	// If one keypress results in multiple codes being output, then
	// change in IRremoteInt.h:
	// #define _GAP 50000

	int RECV_PIN = 8;
	IRrecv irrecv(RECV_PIN);
	decode_results results;


	# Convert raw stats into hourly stats.
	def self.squash!(before=Time.now)
	transaction do
	range = where(%{
	date_trunc('hour', collected_at) < date_trunc('hour', timestamp ?)
	}, before)

	from_id, to_id = range.minimum(:id), range.maximum('id')
	return nil if [from_id, to_id].none?

	#!/bin/sh

	ip route \|grep default # default via 10.235.9.1 dev eth0
	ip route change default via `ip route\| awk '/^def/{print $3}'` dev eth0 initcwnd 16
	ip route \|grep default # default via 10.235.9.1 dev eth0 initcwnd 16

	sysctl -w net.ipv4.tcp_slow_start_after_idle=0
	sysctl -a \|grep net.ipv4.tcp_slow_start_after_idle