bcremer

upstream backend {
    server localhost:8080;
    #server backup1.example.com:8080   backup;
    #server backup2.example.com:8080   backup;
}

# Set cache dir
proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=one:10m;

# Set cache key to include identifying components

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

drewconway

# A function that converts a given integer into its Roman Numeral equivalent
to.RomanNumeral<-function(x) {
    if(0 < x & x < 5000) {
        x<-as.integer(x) 
        digits<-c(1000,900,500,400,100,90,50,40,10,9,5,4,1)
        numerals<-c("M","CM","D","CD","C","XC","L","XL","X","IX","V","IV","I")
        digits.numerals<-as.data.frame(cbind(digits,numerals), stringsAsFactors=FALSE)
        numeral<-""
        for(i in 1:nrow(digits.numerals)) {
            while(x >= as.numeric(digits.numerals[i,1])) {

retr0h

CONTENT_TYPES = {:html => 'text/html', :css => 'text/css', :js  => 'application/javascript'}

before do
  request_uri = case request.env['REQUEST_URI']
    when /\.css$/ : :css
    when /\.js$/  : :js
    else          :html
  end
  content_type CONTENT_TYPES[request_uri], :charset => 'utf-8'
end