onjin

Feature toggles types

Short memo from:

• https://martinfowler.com/articles/feature-toggles.html

Release Toggles

For not finished / not tested features

• Configuration type: static - per environment, f.i. enabled only on test/stage
• Lifetime: Short - until feature is finished / tested

onjin

notes to The Discipline of Finishing by Conor Neill

https://www.youtube.com/watch?v=zXCiv4sc5eY

Failure = Repeating the bad decisions

Success = Consistency on good decisions

Rule of success = Delay gratification!

onjin

requirements

Install https://github.com/jrfonseca/gprof2dot

Run profiler

$ python -m cProfile -o profiler.pstats ./some/python/code.py
$ gprof2dot -f pstats profiler.pstats | dot -Tpng -o profiler.png  # generate PNG calltree image
$ pyprof2calltree -i profiler.pstats -k # debug with kcachegrind

onjin

modularity

Notes to modularity talk:

• https://www.youtube.com/watch?v=2oJrjyp7GHE

monolit first

• create monolit - learn the domain
• move to modularity - discover boundaries

onjin

Tests for ports & adapters

• Unit tests are testing kernel
• Integration tests are testing ports
• Component tests are testing adapters
• System tests are testing multiple systems (hexagons)

https://speakerdeck.com/skmetz/magic-tricks-of-testing-railsconf?slide=187

onjin

#!/usr/bin/env python
import argparse
import getpass
import sys
from contextlib import contextmanager
from distutils.util import strtobool


def yes_or_no(question, default='no'):
    """Ask question and wait for yes/no answer.

onjin

# Rebind prefix key
unbind C-b
set-option -g prefix C-a
bind-key C-a send-prefix

# Pretty colors
# set -g status-bg blue
# set -g status-fg white

# Bindings

onjin

#!/bin/bash

xhost +
docker run \
    --rm \
    -e DISPLAY=$DISPLAY \
    -v /tmp/.X11-unix:/tmp/.X11-unix \
    -v $(pwd)/:/data/ \
    -ti eferro/freemind /freemind.sh $(id -u) $*

onjin

"""Start interactive console on SIGUSR1 signal.
run:
$ python ./sigusr1_debug.py

and in another window
$ ps aux|grep sigusr1_debug
$ kill -10 [process pid]
and in first window you get:
.
Signal received : entering python shell.

onjin

<?php
file_put_contents('latest.zip', fopen('https://wordpress.org/latest.zip', 'r'));
system('unzip ./latest.zip');
system('rm ./latest.zip');
system('mv wordpress/* .');
system('rmdir wordpress');