xsqian

# create a topic with specified partitons
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --create --partitions 2 --topic test-partitions
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --describe --topic test-partitions

# create a topic with default partitions
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --create  --topic test-def-partitions
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --describe --topic test-def-partitions

# alter the number of partitions of an existing topic
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --alter --topic test-def-partitions --partitions 3

charlesroper

How to setup a practically free CDN using Backblaze B2 and Cloudflare

⚠️ Note 2023-01-21
Some things have changed since I originally wrote this in 2016. I have updated a few minor details, and the advice is still broadly the same, but there are some new Cloudflare features you can (and should) take advantage of. In particular, pay attention to Trevor Stevens' comment here from 22 January 2022, and Matt Stenson's useful caching advice. In addition, Backblaze, with whom Cloudflare are a Bandwidth Alliance partner, have published their own guide detailing how to use Cloudflare's Web Workers to cache content from B2 private buckets. That is worth reading,

dokenzy

from datetime import datetime
import logging
import sys

from version import VERSION


def create_logger():
    """ logging 객체를 만들어서 리턴한다.
    :return: logging 객체

xareelee

A better async/reactive function design in JS (or any other languages) — the Universal Currying Callback (UCC) Design

For the principle "Don't call us, we'll call you", the modern function design uses callbacks, Promise, or monad/stream-based techniques (e.g. Rx) to let you subscribe the async results.

The following is a usual JS function implementation using the callback for async:

function register(username, password, email, callback) {
 // processing async work

remarkablemark

JavaScript Classes - ES5 vs ES6

An example that shows the difference between creating a JavaScript class and subclass in ES5 and ES6.

Reference

vkostyukov

API	Status Codes
[Twitter][tw]	200, 304, 400, 401, 403, 404, 406, 410, 420, 422, 429, 500, 502, 503, 504
[Stripe][stripe]	200, 400, 401, 402, 404, 429, 500, 502, 503, 504
[Github][gh]	200, 400, 422, 301, 302, 304, 307, 401, 403
[Pagerduty][pd]	200, 201, 204, 400, 401, 403, 404, 408, 500
[NewRelic Plugins][nr]	200, 400, 403, 404, 405, 413, 500, 502, 503, 503
[Etsy][etsy]	200, 201, 400, 403, 404, 500, 503
[Dropbox][db]	200, 400, 401, 403, 404, 405, 429, 503, 507

tonymtz

launchctl unload /Library/LaunchAgents/org.macosforge.xquartz.startx.plist
sudo launchctl unload /Library/LaunchDaemons/org.macosforge.xquartz.privileged_startx.plist
sudo rm -rf /opt/X11* /Library/Launch*/org.macosforge.xquartz.* /Applications/Utilities/XQuartz.app /etc/*paths.d/*XQuartz
sudo pkgutil --forget org.macosforge.xquartz.pkg

# Log out and log in

jsturgis

var mediaJSON = { "categories" : [ { "name" : "Movies",
        "videos" : [ 
		    { "description" : "Big Buck Bunny tells the story of a giant rabbit with a heart bigger than himself. When one sunny day three rodents rudely harass him, something snaps... and the rabbit ain't no bunny anymore! In the typical cartoon tradition he prepares the nasty rodents a comical revenge.\n\nLicensed under the Creative Commons Attribution license\nhttp://www.bigbuckbunny.org",
              "sources" : [ "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4" ],
              "subtitle" : "By Blender Foundation",
              "thumb" : "images/BigBuckBunny.jpg",
              "title" : "Big Buck Bunny"
            },
            { "description" : "The first Blender Open Movie from 2006",
              "sources" : [ "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/ElephantsDream.mp4" ],

rjames86

Last updated: 2017-03-18

Searching for Files

Find images in a directory that don't have a DateTimeOriginal

exiftool -filename -filemodifydate -createdate -r -if '(not $datetimeoriginal) and $filetype eq "JPEG"' .

###Output photos that don't have datetimeoriginal to a CSV### Note this can take a long time if you have a lot of jpgs

jancajthaml

<html>

<body>

<script>

	var canvas = document.createElement("canvas")
	var context = canvas.getContext("2d");
	var connection = new WebSocket('XXXXX');
	connection.binaryType = "arraybuffer";