sleepyfox

'Users hate change'

This week NN Group released a video by Jakob Nielsen in which he attempts to help designers deal with the problem of customers being resistant to their new site/product redesign. The argument goes thusly:

1. Humans naturally resist change
2. Your change is for the better
3. Customers should just get used to it and stop complaining

There's slightly more to it than that, he caveats his argument with requiring you to have of course followed their best practices on product design, and allows for a period of customers being able to elect to continue to use the old site, although he says this is obviously only a temporary solution as you don't want to support both.

AlekseyKorzun

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE policymap [
<!ELEMENT policymap (policy)+>
<!ELEMENT policy (#PCDATA)>
<!ATTLIST policy domain (delegate|coder|filter|path|resource) #IMPLIED>
<!ATTLIST policy name CDATA #IMPLIED>
<!ATTLIST policy rights CDATA #IMPLIED>
<!ATTLIST policy pattern CDATA #IMPLIED>
<!ATTLIST policy value CDATA #IMPLIED>

AlekseyKorzun

#!/bin/bash
#
# Whitelist Pingdom probe-servers in iptables.
#
# Create a chain called "PINGDOM" and jump to it somewhere before
# the final REJECT/DROP, e.g.
#
#     # New chain for Pingdom rules
#     :PINGDOM - [0:0]
#

AlekseyKorzun

# Lighttpd
$HTTP["referer"] !~ "^($|http://([^/]*\.)?imagesocket\.(com|net|org)/)" {
    magnet.attract-physical-path-to = ("/www/sites/conf/imagesocket/bandwidth.lua")
}

# Lua check for images that exceeded limit(S)
# Path - Flag - Expiration 
local url_check = 
{
        ["/images/2012/08/20/1.png"] = true, -- 1352167206

AlekseyKorzun

Credit to Paul Moore / @Paul_Reviews:

1. Navigate to http://www.roboform.com/have-i-been-hacked
2. Replace 'Enter account to test' with following: <script type="text/javascript">$('img').attr('src', 'https://lastpass.com/images/lastpass-logo.png');</script>
3. Click on 'Check Now'

In action:

http://g.recordit.co/oBk26XEv0P.gif

typehorror

Flask-SQLAlchemy Caching

The following gist is an extract of the article Flask-SQLAlchemy Caching. It allows automated simple cache query and invalidation of cache relations through event among other features.

Usage

retrieve one object

# pulling one User object

user = User.query.get(1)

jarvys

• create a new redis .conf file

$ cp /etc/redis.conf /etc/redis-xxx.conf

• edit /etc/redis-xxx.conf, illustrated as below

...

andreif

Performance of Flask, Tornado, GEvent, and their combinations

Wensheng Wang, 10/1/11

Source: http://blog.wensheng.org/2011/10/performance-of-flask-tornado-gevent-and.html

When choosing a web framework, I pretty much have eyes set on Tornado. But I heard good things about Flask and Gevent. So I tested the performance of each and combinations of the three. I chose something just a little more advanced than a "Hello World" program to write - one that use templates. Here are the codes:

1, Pure Flask (pure_flask.py)

AlekseyKorzun

find . -name *.php ! -type d ! -name _tmp_ -exec sh -c 'expand -t 4 {} > _tmp_ && mv _tmp_ {}' \;

mickm

#!/bin/bash
#
# Whitelist Pingdom probe-servers in iptables.
#
# Create a chain called "PINGDOM" and jump to it somewhere before
# the final REJECT/DROP, e.g.
#
#     # New chain for Pingdom rules
#     :PINGDOM - [0:0]
#