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worker_processes    4;
worker_rlimit_nofile 1024768;

events {
    worker_connections  20480;
    use                 epoll;
}

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 http {

  # usual config stuff...

  server {
    listen 173.230.151.99:80;
    server_name istlsfastyet.com www.istlsfastyet.com;

    # redirect to naked domain avoiding http://www -> https://www -> https:// chain.
    rewrite ^ https://istlsfastyet.com$request_uri? permanent;

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# on colmux host:
> colmux -addr 'node[01-12],othernode[1-5].linode.com' -command "-sncm" -debug 5

#run on every node:
> sudo /usr/bin/collectl -scn -oT -A10.135.5.143 --debug 1

# with parallel-ssh, hosts.txt:
> parallel-ssh -h hosts.txt sudo /usr/bin/collectl -sncm -oT -A10.135.5.143 --debug 1

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1. General Background and Overview

• Probabilistic Data Structures for Web Analytics and Data Mining : A great overview of the space of probabilistic data structures and how they are used in approximation algorithm implementation.
• Models and Issues in Data Stream Systems
• Philippe Flajolet’s contribution to streaming algorithms : A presentation by Jérémie Lumbroso that visits some of the hostorical perspectives and how it all began with Flajolet
• Approximate Frequency Counts over Data Streams by Gurmeet Singh Manku & Rajeev Motwani : One of the early papers on the subject.
• [Methods for Finding Frequent Items in Data Streams](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.187.9800&rep

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#
# Wide-open CORS config for nginx
#
location / {

     if ($request_method = 'OPTIONS') {

        add_header 'Access-Control-Allow-Origin' 'http://10.140.10.40';
        
        #

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<!-- check https://github.com/flyingsaucerproject/flyingsaucer -->

<div style="-fs-page-sequence: start; page-break-before: always">

  <!-- header for each page -->
  <div style="position: running(current);">
    <div id="page-header" class="small">

      <span style="text-align: left; float:left;">
        <!-- header will appear on all pages -->

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#!/bin/sh
# deploy.sh
N="`readlink \"$1\"`"
mv -T "$1.stage" "$1"
ln -s "$N" "$1.stage"
rm -rf "$N"
cp -aH "$1" "$N"

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# will listen on 4444, redir to 4567, speed is 1024*32 = 32kbytes/sec (slow!)
redir --lport=4444 --cport=4567 --max_bandwidth $((1024*32))

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#
# aliases 
#
alias pserv='python -m SimpleHTTPServer $*'
alias wget='wget --trust-server-names --no-check-certificate'
alias ls='LC_COLLATE=C ls -lFha --group-directories-first --color '
alias grep='grep --color=always'
alias less='less -R'

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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