bobuss

Object Calisthenics outlines 9 basic rules to apply when performing the exercise:

• One level of indentation per method.
• Don't use the ELSE keyword.
• Wrap all primitives and Strings in classes.
• First class collections.
• One dot per line.
• Don't abbreviate.
• Keep all classes less than 50 lines.
• No classes with more than two instance variables.

bobuss

version: '2.1'

services:
  homeassistant:
    restart: always
    image: homeassistant/raspberrypi3-homeassistant
    expose:
      - 8123
    ports:
      - "8123:8123"

bobuss

(from http://www.metabrew.com/article/a-million-user-comet-application-with-mochiweb-part-1)

Save yourself some time and tune the kernel tcp settings before testing with lots of connections, or your test will fail and you’ll see lots of Out of socket memory messages (and if you are masquerading, nf_conntrack: table full, dropping packet.)

Here are the sysctl settings I ended up with - YMMV, but these will probably do:

$ cat /etc/sysctl.conf
# General gigabit tuning:
net.core.rmem_max = 16777216

bobuss

ENV=env
SRC_CORE=src

CLOC=$(shell which cloc)

test-all: clean pep8 cloc init-coverage test-unit test-functionnal test-integration report-coverage flake8 lint clone

pep8:
    $(ENV)/bin/pep8 --max-line-length=99 $(SRC_CORE) > pep8.log || :

bobuss

Create a Redis Cluster with docker-machine

Requirements

• docker
• docker-machine
• redis-trib.rb

We use a home made redis-3.0 docker image (https://registry.hub.docker.com/u/bobuss/redis-cluster/), with the cluster mode enabled, and the classical ports exposed (6379 for redis and 16379 for the cluster).

bobuss

- 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
- Send 2K bytes over 1 Gbps network  20,000 ns
- Read 1 MB sequentially from memory 250,000 ns
- Round trip within same datacenter  500,000 ns
- Disk seek                          10,000,000 ns

bobuss

env

bobuss

SRC=src

$(JSHINT):
	npm install jshint

JS_FILES=$(shell find $(SRC) -type f -name '*.js')

jslint: $(JSHINT)
	-$(JSHINT) --jslint-reporter --config config/jshint.json > jshint.xml  $(JS_FILES) || :
	sed -E 's?<file name="(.*)\?">?<file name="'`pwd`'/\1">?' jshint.xml > jshint-proper.xml

bobuss

import sys
import codecs
import pystache
import os
import fnmatch
import string
import datetime

webroot = 'http://www.example.com/
path = '/var/www/'

bobuss

#!/usr/bin/env bash
for i in 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23; do echo $( echo -e "$i\t"; git shortlog  -n --format='%ad %s' | grep " $i:" | wc -l); done