chitchcock

Stevey's Google Platforms Rant

I was at Amazon for about six and a half years, and now I've been at Google for that long. One thing that struck me immediately about the two companies -- an impression that has been reinforced almost daily -- is that Amazon does everything wrong, and Google does everything right. Sure, it's a sweeping generalization, but a surprisingly accurate one. It's pretty crazy. There are probably a hundred or even two hundred different ways you can compare the two companies, and Google is superior in all but three of them, if I recall correctly. I actually did a spreadsheet at one point but Legal wouldn't let me show it to anyone, even though recruiting loved it.

I mean, just to give you a very brief taste: Amazon's recruiting process is fundamentally flawed by having teams hire for themselves, so their hiring bar is incredibly inconsistent across teams, despite various efforts they've made to level it out. And their operations are a mess; they don't real

jboner

Latency Comparison Numbers (~2012)
----------------------------------
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

guifromrio

How to: Allow Node to bind to port 80 without sudo

TL;DR

Only do this if you understand the consequences: all node programs will be able to bind on ports < 1024

sudo setcap 'cap_net_bind_service=+ep' /usr/local/bin/node

Important: your node location may vary. Use which node to find it, or use it directly in the command:

hest

def get_count(q):
    count_q = q.statement.with_only_columns([func.count()]).order_by(None)
    count = q.session.execute(count_q).scalar()
    return count

q = session.query(TestModel).filter(...).order_by(...)

# Slow: SELECT COUNT(*) FROM (SELECT ... FROM TestModel WHERE ...) ...
print q.count()

zancas

Intro

This is a comparison of packaging with python vs with npm.

TLDR

Python packaging is 3x as complex as javascript packaging. See the conclusion for more detail (but less than the whole document).

Categories examined:

• [script creation](script creation)
• [conversion to a package](conversion to a package)

protrolium

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

You can get the list of installed codecs with:

Maumagnaguagno

language: ruby
rvm:
  - 2.0.0
env:
  global:
  - USER="username"
  - EMAIL="username@mail.com"
  - REPO="name of target repo"
  - FILES="README.md foo.txt bar.txt"
  - GH_REPO="github.com/${USER}/${REPO}.git"

peteristhegreat

*.db diff=sqlite3

blackgate

Known Issues: On High Sierra there are problems related to the screen brightness and sleep issues.

1. Reset SMC and NVRAM

SMC: https://support.apple.com/en-us/HT201295

NVRAM: https://support.apple.com/en-us/HT204063

2. Change the gpu-power-prefs and disable SIP

moos

// per https://docs.npmjs.com/misc/scripts, npm exposes a bunch of variables to
// the environment prefixed with npm_config_*, npm_package_* and npm_lifecycle_*.
// Here's a list of all variables exposed in my setup.

npm_config_access=
npm_config_allow_same_version=
npm_config_also=
npm_config_always_auth=
npm_config_argv='{"remain":[],"cooked":["run","foo"],"original":["run","foo"]}'
npm_config_auth_type=legacy