johnsonc

from django.db import connection

# If using cursor without "with" -- it must be closed explicitly:
with connection.cursor() as cursor:
    cursor.execute('select column1, column2, column3 from table where aaa=%s', [5])
    for row in cursor.fetchall():
        print row[0], row[1], row[3]

johnsonc

#!/usr/bin/env python

"""Simple HTTP Server With Upload.

This module builds on BaseHTTPServer by implementing the standard GET
and HEAD requests in a fairly straightforward manner.

"""

johnsonc

Ionic Modal SideMenu

http://codepen.io/Shadeness/pen/xEcaC

johnsonc

# http block

    geoip_city  /usr/local/share/GeoIP/GeoIPCity.dat;
    geoip_country /usr/local/share/GeoIP/GeoIPCountry.dat;
    
# location block

        proxy_set_header GEOIP_COUNTRY_CODE $geoip_country_code;
        proxy_set_header GEOIP_COUNTRY_CODE3 $geoip_country_code3;
        proxy_set_header GEOIP_COUNTRY_NAME $geoip_country_name;

johnsonc

import torch
import torch.nn as nn
import torch.nn.parallel

class DCGAN_D(nn.Container):
    def __init__(self, isize, nz, nc, ndf, ngpu, n_extra_layers=0):
        super(DCGAN_D, self).__init__()
        self.ngpu = ngpu
        assert isize % 16 == 0, "isize has to be a multiple of 16"

johnsonc

Intro

This is a basic collection of things I do when setting up a new headless ubuntu machine as a webserver. Following the steps below should give you a reasonable secure server with HTTP/2 support (including ALPN in chrome) and the fast NGINX server. I am happy to add things so leave a comment.

Basics

After creating the server (droplet on DigitalOcean) log in with

johnsonc

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers

johnsonc

INSTALLED_APPS = (

    'modeltranslation',
    'djangocms_admin_style',  # for the admin skin. You **must** add 'djangocms_admin_style' in the list **before** 'django.contrib.admin'.

    # Boostrap admin theme
    # 'django_admin_bootstrapped.bootstrap3',
    # 'django_admin_bootstrapped',

    # Apps bundled with Django

johnsonc

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
Send 1K bytes over 1 Gbps network        10,000   ns    0.01 ms
Read 4K randomly from SSD*              150,000   ns    0.15 ms