Peter Sanford psanford

## gist:038afa9ad7af3693efd0

      
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                rbranson
                / gist:038afa9ad7af3693efd0
            
            
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              September 29, 2016 17:44
            
              
                Disaggregated Proxy & Storage Nodes
              
          
    The point of this is to use cheap machines with small/slow storage to coordinate client requests while dedicating the machines with the big and fast storage to doing what they do best. I found that request coordination was contributing to about half the CPU usage on our Cassandra nodes, on average. Solid state storage is quite expensive, nearly doubling the cost of typical hardware. It also means that if people have control over hardware placement within the network, they can place proxy nodes closer to the client without impacting their storage footprint or fault tolerance characteristics.
This is accomplished in Cassandra by passing the -Dcassandra.join_ring=false option when the process is started. These nodes will connect to the seeds, cache the gossip data, load the schema, and begin listening for client requests. Messages like "/x.x.x.x is now UP!" will appear on the other nodes.
There are also some more practical benefits to this. Handling client requests caused us to push the NewSize of the heap up

  
## change_case.el
;; Grateful thanks are given to Brian Marick (@marick) for helping me
;; write these. I got the original idea while reading through
;; http://xahlee.org/emacs/elisp_idioms.html, but couldn't work out
;; the elisp regexes. Brian Marick (@marick) stepped in and helped. He
;; took my tortured and broken camelcase-region and turned it into
;; something that actually worked. I then created
;; camelcase-word-or-region. I then wrote the snakecase versions but I
;; see now that all I did was copy the camelcase defuns over and,
;; meaning to go back and finish them Real Soon Now, forgot all about
;; them. I've had a quick look (2011-02-27) but elisp regexes are

## gdb-stuck-ruby.txt
# Here's the script I'll use to demonstrate - it just loops forever:

$ cat test.rb
#!/usr/bin/env ruby

loop do
  sleep 1
end

# Now, I'll start the script in the background, and redirect stdout and stderr

## SyncForegroundIntentService
public class SyncForegroundIntentService extends IntentService {

    @Override
    protected void onHandleIntent(@Nullable Intent intent) {
        try {

            NotificationCompat.Builder builder = ...

            startForeground(SYNC_FOREGROUND_INTENT_SERVICE_ID, builder.build());


## ftscreen.sh
#!/bin/bash
# since screen doesn't know how to set custom baud rates, this does it for FTDI devices.
# it works by using setserial to set the custom speed (spd_cust) mode for baud rate 38400
# it calculates the proper clock divider by dividing the device's base clock by the desired rate
# then, it starts screen at 38400 - which is not longer 38400 but your new clock rate.
# tested on FT232H, FT2232H, FT-X, and FT232RL
# does not work on CH341 or PL2303

# todo: confirm FTDI before running setserial and report error
# todo: validate uart range

## docker_netns.sh
#!/usr/bin/env bash

if [ "$1" == "" ]; then
  echo "usage: $0 <docker_id>"
  echo "Exposes the netns of a docker container to the host"
  exit 1
fi
ppid=`docker inspect $1 | grep Pid | awk '{print $2 + 0}'`
if [ "$ppid" == "" ]; then
  echo "lxc parent pid not found"

## extract-attachments.py
#!/usr/bin/env python3
# Get your files that Gmail block. Warning message:
# "Anti-virus warning - 1 attachment contains a virus or blocked file. Downloading this attachment is disabled."
# Based on: https://spapas.github.io/2014/10/23/retrieve-gmail-blocked-attachments/

# Instructions:
# Go to your emails, click the arrow button in the top right, "Show original", then "Download Original".
# Move the files to the same directory as this program, then run it.

import sys

## hmac-secret-demo.html
<!doctype html>
<html lang="en">
  <head>
    <!--
    inspired by Mozilla Webauthn documentation: https://developer.mozilla.org/en-US/docs/Web/API/Web_Authentication_API
    copyright: 2019 Nicolas Mora <nicolas@babelouest.org>
    license: MIT
    -->
    <title>Hmac-Secret webauthn Extension</title>
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/cbor-js-unofficial@0.1.0-a4/cbor.min.js"></script>

## README.md

      
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                sehrgut
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              April 17, 2023 20:10
            
              
                AdBlock Plus rule to neuter Forbes "AdBlock detection"
              
          
    Forbes Is Irrelevant

an AdBlock Plus filter list
Installation


Right-click the "ABP" icon in yoru browser toolbar.
Select "Options".
Click the "Add Filter Subscription" button.
Select "Add a different subscription..." from the drop-down menu.
Enter "Forbes Is Irrelevant" for the subscription title, and http://bit.ly/forbes-sucks for the filter list location.
Click the "Add" button.


## google-chrome-lxc.sh
#!/bin/bash
# Set up an lxc container with google chrome so it runs confined but displayed on the
# localhost.
# Adapted from https://blog.simos.info/how-to-run-graphics-accelerated-gui-apps-in-lxd-containers-on-your-ubuntu-desktop/
# Assume setguid/setid for root is properly setup
# root:1000:1
# Assume aptcache profile exists, see https://gist.github.com/Roadmaster/754110f3f49fef19ec89ae29f29edd11

LXC_NAME=chrome-container
	;; Grateful thanks are given to Brian Marick (@marick) for helping me
	;; write these. I got the original idea while reading through
	;; http://xahlee.org/emacs/elisp_idioms.html, but couldn't work out
	;; the elisp regexes. Brian Marick (@marick) stepped in and helped. He
	;; took my tortured and broken camelcase-region and turned it into
	;; something that actually worked. I then created
	;; camelcase-word-or-region. I then wrote the snakecase versions but I
	;; see now that all I did was copy the camelcase defuns over and,
	;; meaning to go back and finish them Real Soon Now, forgot all about
	;; them. I've had a quick look (2011-02-27) but elisp regexes are
	# Here's the script I'll use to demonstrate - it just loops forever:

	$ cat test.rb
	#!/usr/bin/env ruby

	loop do
	sleep 1
	end

	# Now, I'll start the script in the background, and redirect stdout and stderr
	public class SyncForegroundIntentService extends IntentService {

	@Override
	protected void onHandleIntent(@Nullable Intent intent) {
	try {

	NotificationCompat.Builder builder = ...

	startForeground(SYNC_FOREGROUND_INTENT_SERVICE_ID, builder.build());
	#!/bin/bash
	# since screen doesn't know how to set custom baud rates, this does it for FTDI devices.
	# it works by using setserial to set the custom speed (spd_cust) mode for baud rate 38400
	# it calculates the proper clock divider by dividing the device's base clock by the desired rate
	# then, it starts screen at 38400 - which is not longer 38400 but your new clock rate.
	# tested on FT232H, FT2232H, FT-X, and FT232RL
	# does not work on CH341 or PL2303

	# todo: confirm FTDI before running setserial and report error
	# todo: validate uart range
	#!/usr/bin/env bash

	if [ "$1" == "" ]; then
	echo "usage: $0 <docker_id>"
	echo "Exposes the netns of a docker container to the host"
	exit 1
	fi
	ppid=`docker inspect $1 \| grep Pid \| awk '{print $2 + 0}'`
	if [ "$ppid" == "" ]; then
	echo "lxc parent pid not found"
	#!/usr/bin/env python3
	# Get your files that Gmail block. Warning message:
	# "Anti-virus warning - 1 attachment contains a virus or blocked file. Downloading this attachment is disabled."
	# Based on: https://spapas.github.io/2014/10/23/retrieve-gmail-blocked-attachments/

	# Instructions:
	# Go to your emails, click the arrow button in the top right, "Show original", then "Download Original".
	# Move the files to the same directory as this program, then run it.

	import sys
	<!doctype html>
	<html lang="en">
	<head>
	<!--
	inspired by Mozilla Webauthn documentation: https://developer.mozilla.org/en-US/docs/Web/API/Web_Authentication_API
	copyright: 2019 Nicolas Mora <nicolas@babelouest.org>
	license: MIT
	-->
	<title>Hmac-Secret webauthn Extension</title>
	<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/cbor-js-unofficial@0.1.0-a4/cbor.min.js"></script>
	#!/bin/bash
	# Set up an lxc container with google chrome so it runs confined but displayed on the
	# localhost.
	# Adapted from https://blog.simos.info/how-to-run-graphics-accelerated-gui-apps-in-lxd-containers-on-your-ubuntu-desktop/
	# Assume setguid/setid for root is properly setup
	# root:1000:1
	# Assume aptcache profile exists, see https://gist.github.com/Roadmaster/754110f3f49fef19ec89ae29f29edd11

	LXC_NAME=chrome-container