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This is a numbered list.
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I'm going to include a fenced code block as part of this bullet:
Code More Code
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gzip on; | |
gzip_http_version 1.1; | |
gzip_vary on; | |
gzip_comp_level 6; | |
gzip_proxied any; | |
gzip_types text/plain text/html text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript; | |
# make sure gzip does not lose large gzipped js or css files | |
# see http://blog.leetsoft.com/2007/7/25/nginx-gzip-ssl | |
gzip_buffers 16 8k; |
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$ ruby benchmarks/excon_vs_google.rb | |
[em-http-request, HTTParty, Net::HTTP, Net::HTTP (persistent), open-uri, RestClient, StreamlyFFI (persistent), Typhoeus, Excon, Excon (persistent)] | |
+--------------------------+-----------+ | |
| tach | total | | |
+--------------------------+-----------+ | |
| Excon | 7.614298 | | |
+--------------------------+-----------+ | |
| Typhoeus | 7.723362 | |
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// Simple proof of concept for PHP bug (CVE-2012-0830) described by Stefan Esser (@i0n1c) | |
// http://thexploit.com/sec/critical-php-remote-vulnerability-introduced-in-fix-for-php-hashtable-collision-dos/ | |
// Generate 1000 normal keys and one array | |
function createEvilObj () { | |
var evil_obj = {}; | |
for (var i = 0; i < 1001; i++) { | |
evil_obj[i] = 1; | |
} | |
evil_obj['kill[]'] = 'kill'; |
create different ssh key according the article Mac Set-Up Git
$ ssh-keygen -t rsa -C "your_email@youremail.com"
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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 |
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This playbook has been removed as it is now very outdated. |
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class ActiveRecord::Base | |
mattr_accessor :shared_connection | |
@@shared_connection = nil | |
def self.connection | |
@@shared_connection || ConnectionPool::Wrapper.new(:size => 1) { retrieve_connection } | |
end | |
end | |
ActiveRecord::Base.shared_connection = ActiveRecord::Base.connection |
Here are a list of headless browsers that I know about:
- [HtmlUnit][1] - Java. Custom browser engine. JavaScript support/DOM emulated. Open source.
- [Ghost][2] - Python only. WebKit-based. Full JavaScript support. Open source.
- [Twill][3] - Python/command line. Custom browser engine. No JavaScript. Open source.
- [PhantomJS][4] - Command line/all platforms. WebKit-based. Full JavaScript support. Open source.
- [Awesomium][5] - C++/.Net/all platforms. Chromium-based. Full JavaScript support. Commercial/free.
- [SimpleBrowser][6] - .Net 4/C#. Custom browser engine. No JavaScript support. Open source.
- [ZombieJS][7] - Node.js. Custom browser engine. JavaScript support/emulated DOM. Open source.
- [EnvJS][8] - JavaScript via Java/Rhino. Custom browser engine. JavaScript support/emulated DOM. Open source.
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h = { | |
'a' => :a_value, | |
'b' => nil, | |
'c' => false | |
} | |
h.fetch('a', :default_value) #=> :a_value | |
h.fetch('b', :default_value) #=> nil | |
h.fetch('c', :default_value) #=> false | |
h.fetch('d', :default_value) #=> :default_value |
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