jpswade

Find the original here article here: Devops Best Practices

DevOps started out as "Agile Systems Administration". In 2008, at the Agile Conference in Toronto, Andrew Shafer posted an offer to moderate an ad hoc "Birds of a Feather" meeting to discuss the topic of "Agile Infrastructure". Only one person showed up to discuss the topic: Patrick Debois. Their discussions and sharing of ideas with others advanced the concept of "agile systems administration". Debois and Shafer formed an Agile Systems Administrator group on Google, with limited success. Patrick Debois did a presentation called "Infrastructure and Operations" addressing

excavador

Motivation

You often have several docker containers and applications which work together in the locel development environment. You need the following communications:

• docker container to localhost
• localhost to docker container
• docker container to docker container

You have a way to connect localhost-to-docker using -p (port-mapping) docker option. For instance, you can start PostgreSQL container using -p 0.0.0.0:5432:5432 and then connect like to normal PostgreSQL

meetmatt

apk info | xargs -n1 -I{} apk info -s {} | xargs -n4 | awk '{print $4,$1}' | sort -rn

blixt

// NOTICE 2020-04-18
// Please see the comments below about why this is not a great PRNG.

// Read summary by @bryc here:
// https://github.com/bryc/code/blob/master/jshash/PRNGs.md

// Have a look at js-arbit which uses Alea:
// https://github.com/blixt/js-arbit

/**

markselby

# Build dependencies for OpenResty.
sudo apt-get install build-essential libpcre3-dev libssl-dev libgeoip-dev

# Install standard Nginx first so that you get the relevant service scripts installed too
sudo apt-get install nginx

# If you want to access Postgres via Nginx
sudo apt-get install libpq-dev

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