Varun Upadhyay varunu28

Basics

B-trees and CPU Caches

A curated list of AWS resources to prepare for the AWS Certifications

A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

Resources for learning web design & front-end development:

ONLINE

Design

	" VIM Configuration File
	" Description: Optimized for C/C++ development, but useful also for other things.
	" Author: Gerhard Gappmeier
	"

	" set UTF-8 encoding
	set enc=utf-8
	set fenc=utf-8
	set termencoding=utf-8
	" disable vi compatibility (emulation of old bugs)