Stephen Chen RPing

## linux-ubuntu-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: ubuntu-deployment
  labels:
    app: ubuntu
spec:
  replicas: 1
  selector:
    matchLabels:

## consistent_hashing.py
'''https://michaelnielsen.org/blog/consistent-hashing/'''
import bisect
import hashlib

class ConsistentHash:
  '''ConsistentHash(n,r) creates a consistent hash object for a
  cluster of size n, using r replicas.

  It has three attributes. num_machines and num_replics are
  self-explanatory.  hash_tuples is a list of tuples (j,k,hash),

## latency.txt
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

## binlog-rollback.pl
#!/usr/bin/perl -w

use strict;
use warnings;

use Class::Struct;
use Getopt::Long qw(:config no_ignore_case);					# GetOption
# register handler system signals
use sigtrap 'handler', \&sig_int, 'normal-signals';

## gif2mp4.sh
#!/bin/sh

# sh gif2mp4.sh <gif url/local file> <loop count>
# output file will be out.mp4

ffmpeg -f gif -i $1 -pix_fmt yuv420p -vcodec libx264 tmp.mp4
for (( i = 0; i <= $2; i++ ))
do
    printf "file tmp.mp4\n" >> list.txt
done

## debug.py
import pprint
ppp = pprint.PrettyPrinter(indent=4)
import pdb; pdb.set_trace()

## README.md

      
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              Last active
              January 27, 2019 09:40
            
              
                Video/Audio Collection
              
          
Converting WebM to MP4 Using FFmpeg
Converting FLV to MP4 With FFmpeg The Ultimate Guide
从Chrome源码看audio/video流媒体实现一
FFmpeg的H.264解码器源代码简单分析：概述
最简单的基于FFmpeg的封装格式处理：视音频复用器（muxer）


## memo.txt
create database XXX character set utf8mb4 collate utf8mb4_unicode_ci;

## styles.less
// style the background color of the tree view
.tree-view {
  // background-color: whitesmoke;
  font-family: Inconsolata, Monaco, Consolas, 'Courier New', Courier;
  font-size: 15px;
}
atom-workspace {
  font-family: Inconsolata, Monaco, Consolas, 'Courier New', Courier;
  // font-size: 15px;
}

## Open iTerm2 in Finder folder
-- Adapted from these sources:
-- http://peterdowns.com/posts/open-iterm-finder-service.html
-- https://gist.github.com/cowboy/905546
--
-- Modified to work with files as well, cd-ing to their container folder
on run {input, parameters}
  tell application "Finder"
		set my_file to first item of input
		set filetype to (kind of (info for my_file))
		-- Treats OS X applications as files.  To treat them as folders, integrate this SO answer:
	apiVersion: apps/v1
	kind: Deployment
	metadata:
	name: ubuntu-deployment
	labels:
	app: ubuntu
	spec:
	replicas: 1
	selector:
	matchLabels:
	'''https://michaelnielsen.org/blog/consistent-hashing/'''
	import bisect
	import hashlib

	class ConsistentHash:
	'''ConsistentHash(n,r) creates a consistent hash object for a
	cluster of size n, using r replicas.

	It has three attributes. num_machines and num_replics are
	self-explanatory. hash_tuples is a list of tuples (j,k,hash),
	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
	#!/usr/bin/perl -w

	use strict;
	use warnings;

	use Class::Struct;
	use Getopt::Long qw(:config no_ignore_case); # GetOption
	# register handler system signals
	use sigtrap 'handler', \&sig_int, 'normal-signals';
	#!/bin/sh

	# sh gif2mp4.sh <gif url/local file> <loop count>
	# output file will be out.mp4

	ffmpeg -f gif -i $1 -pix_fmt yuv420p -vcodec libx264 tmp.mp4
	for (( i = 0; i <= $2; i++ ))
	do
	printf "file tmp.mp4\n" >> list.txt
	done
	import pprint
	ppp = pprint.PrettyPrinter(indent=4)
	import pdb; pdb.set_trace()
	// style the background color of the tree view
	.tree-view {
	// background-color: whitesmoke;
	font-family: Inconsolata, Monaco, Consolas, 'Courier New', Courier;
	font-size: 15px;
	}
	atom-workspace {
	font-family: Inconsolata, Monaco, Consolas, 'Courier New', Courier;
	// font-size: 15px;
	}
	-- Adapted from these sources:
	-- http://peterdowns.com/posts/open-iterm-finder-service.html
	-- https://gist.github.com/cowboy/905546
	--
	-- Modified to work with files as well, cd-ing to their container folder
	on run {input, parameters}
	tell application "Finder"
	set my_file to first item of input
	set filetype to (kind of (info for my_file))
	-- Treats OS X applications as files. To treat them as folders, integrate this SO answer: