onitonitonito

"""
# 3년전 이맘때 쯤, 블링킹 xmas 트리
"""
import os
import time
import random

# print(__doc__)

filler = '.'

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

vmlinz

Intro

• https://en.wikipedia.org/wiki/Comparison_of_free_software_e-commerce_web_application_frameworks
• https://www.djangopackages.com/grids/g/ecommerce/
• https://www.mindmeister.com/66865574/ecommerce-organization

List of open source ecommerce platforms

• https://www.magentocommerce.com/
• https://www.opencart.com/

mlanett

HTTP status code symbols for Rails

Thanks to Cody Fauser for this list of HTTP responce codes and their Ruby on Rails symbol mappings.

Status Code Symbol
1xx Informational
100 :continue
101 :switching_protocols
102 :processing

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