jboner

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

rjattrill

# Join multiple lines without new line
value: >
        part 1
        part 2
        
# Join with newline
value2: |
        line 1
        line 2

supermarin

# ZSH / BASH users
# Add this to your .env, .bashrc, .zshrc, or whatever file you're using for environment

man() {
	env \
		LESS_TERMCAP_mb=$(printf "\e[1;31m") \
		LESS_TERMCAP_md=$(printf "\e[1;31m") \
		LESS_TERMCAP_me=$(printf "\e[0m") \
		LESS_TERMCAP_se=$(printf "\e[0m") \
		LESS_TERMCAP_so=$(printf "\e[1;44;33m") \

mmailhos

AWS Architect Associate - Reminder

A few notes for passing the AWS Architect Associate certification - March 2018

EC2

General purpose SSD have a maximum of 10.000 IOPS.

It is possible to detach non-root volume from running EC2 instance.

soniah

#!/bin/bash                                                                      
                                                                                 
# remove all blank lines in go 'imports' statements,                             
# then sort with goimports                                                       
                                                                                 
if [ $# != 1 ] ; then                                                            
  echo "usage: $0 <filename>"                                                    
  exit 1                                                                         
fi