mingrammer

# -*- coding: utf-8 -*-

import StringIO
import time

import boto
from boto.cloudfront.distribution import Distribution


class CloudFrontManager(object):

mingrammer

Make symlink of shared setting file on cloud. In this case, use the Dropbox and .vimrc

ln -s ~/Dropbox/dev/env/vim/.vimrc ~/.vimrc

mingrammer

Latency Comparison Numbers
--------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

mingrammer

; config.ini
[DEFAULT]
SECRET_KEY = secret-key-of-myapp
ADMIN_NAME = administrator
AWS_DEFAULT_REGION = ap-northeast-2
MAX_IMAGE_SIZE = 5242880

[TEST]
TEST_TMP_DIR = tests
TEST_TIMEOUT = 20

mingrammer

// config.json
{
  "DEFAULT": {
    "SECRET_KEY": "secret-key-of-myapp",
    "ADMIN_NAME": "administrator",
    "AWS_DEFAULT_REGION": "ap-northeast-2",
    "MAX_IMAGE_SIZE": 5242880
  },
  "TEST": {
    "TEST_TMP_DIR": "tests",

mingrammer

# main_with_ini.py
import configparser

config = configparser.ConfigParser()
config.read('config.ini')

secret_key = config['DEFAULT']['SECRET_KEY'] # 'secret-key-of-myapp'
ci_hook_url = config['CI']['HOOK_URL'] # 'web-hooking-url-from-ci-service'

# main_with_json.py

mingrammer

// config.json.example
{
  "DEFAULT": {
    "SECRET_KEY": "...",
    "ADMIN_NAME": "...",
    "AWS_DEFAULT_REGION": "...",
    "MAX_IMAGE_SIZE": 5242880
  },
  "TEST": {
    "TEST_TMP_DIR": "tests",

mingrammer

# /opt/settings/config.py
DATABASE_CONFIG = {
    'host': 'localhost',
    'dbname': 'company',
    'user': 'user',
    'password': 'password',
    'port': 3306
}

# main.py

mingrammer

# Provisioning script
...
cd /opt/settings
git clone git@github.com/company/config.git

cd /opt/app
git clone git@github.com/company/api-server.git
...

mingrammer

>>> 2 * 3 
6 
>>> 2 ** 3 
8 
>>> 1.414 * 1.414 
1.9993959999999997
>>> 1.414 ** 1.414
1.6320575353248798