Chan Zi-Yuan zynick

Last updated: April 2021

Also known as itag or format codes and way back they could be specified with the fmt parameter (e.g. &fmt=22). Depending on the age and/or popularity of the video, not all formats will be available.

DASH video

Resolution	AV1 HFR High	AV1 HFR	AV1	VP9.2 HDR HFR	VP9 HFR	VP9	H.264 HFR	H.264
	MP4	MP4	MP4	WebM	WebM	WebM	MP4	MP4

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

Most active GitHub users in Malaysia

The count of contributions (summary of Pull Requests, opened issues and commits) to public repos at GitHub.com from Wed, 14 Nov 2012 03:35:10 GMT till Thu, 14 Nov 2013 03:35:10 GMT.

Only first 1000 GitHub users according to the count of followers are taken. This is because of limitations of GitHub search. Sorting algo in pseudocode:

githubUsers
 .filter((user) -&gt; user.followers &gt; 0)

This re-styles your sublime text sidebar to be dark, it fits default Monokai theme.

Save the Default.sublime-theme file into packages/Theme - Default, make a backup of your original if you want to be able to go back easily.

Based on:

	db.CollectionNameHere.aggregate([
	{ $group: { _id: "$FieldNameHere"} },
	{ $group: { _id: 1, count: { $sum: 1 } } }
	], { allowDiskUse: true })

	"""
	This file contains code that, when run on Python 2.7.5 or earlier, creates
	a string that should not exist: u'\Udeadbeef'. That's a single "character"
	that's illegal in Python because it's outside the valid Unicode range.

	It then uses it to crash various things in the Python standard library and
	corrupt a database.

	On Python 3... well, this file is full of syntax errors on Python 3. But
	if you were to change the print statements and byte literals and stuff: