UTF-8 icons

https://tutorialzine.com/2014/12/you-dont-need-icons-here-are-100-unicode-symbols-that-you-can-use Icon-like Smiley ☺ ☺ ☺ Hot Springs ♨ ♨ ♨ 8-Ball ➑ ➑ ➑ White Star ☆ ☆ ☆ Black Star ★ ★ ★ White Heart ♡ ♡ ♡ Black Heart ❤ ❤ ❤ Airplane ✈ ✈ ✈ Black Scissors ✂ ✂ ✂ White Scissors ✄ ✄ ✄ Crown ♕ ♕ ♕ Cross ✝ …

How to handle js errors in your react app

https://hackernoon.com/a-user-encounters-a-javascript-error-youll-never-guess-what-happens-next-dc1a6f725490 In russian — https://habrahabr.ru/company/ruvds/blog/344682/

Yet another article about js-interview

https://medium.freecodecamp.org/the-definitive-javascript-handbook-for-a-developer-interview-44ffc6aeb54e In russian — https://habrahabr.ru/post/345882/

docker-compose for starting aerospike and memcache

Place this config wherever you like (in your project) — for instance, ~/myproj/docker/docker-compose.yml:

version: "2"

services:
  #aerspike
  as:
    image: aerospike/aerospike-server
    volumes:
      - ./aerospike/etc:/opt/aerospike/etc
    ports:
      - 3000:3000

    command: [asd, --config-file, /opt/aerospike/etc/docker.conf]

  memcached:
    image: memcached
    ports:
      - 11211:11211


volumes:
  #volume for etcd
  dicovery-data:
    driver: local

  #volume for database
  db-data:
    driver: local

version: "2"

services:

#aerspike

as:

image: aerospike/aerospike-server

volumes:

- ./aerospike/etc:/opt/aerospike/etc

ports:

- 3000:3000

command: [asd, --config-file, /opt/aerospike/etc/docker.conf]

memcached:

image: memcached

ports:

- 11211:11211

volumes:

#volume for etcd

dicovery-data:

driver: local

#volume for database

db-data:

driver: local

And this config for aerospike should be placed in a directory ~/myproj/docker/aerospike/etc/docker.conf After that you should run it like that:

cd ~/myproj/docker
docker-compose up -d

1 2	cd ~/myproj/docker docker-compose up -d

When you finished, just run:

cd ~/myproj/docker
docker-compose down

1 2	cd ~/myproj/docker docker-compose down

https://docs.docker.com/compose/reference/up/

Container insights for golang engineer (k8s docker CPU throttling)

We’ve run into problems on my work when k8s limits cpu to few processors (throttling), while go application can see all of them (setting GO_MAX_PROCS to maximum CPUs available) and go’s scheduler is going crazy because of that during highload (like stress-tests). It is caused by scheduling for, let’s say, 40 processors while you have …

Proxies and traffic sniffers for mac os

That’s a great one but it’s not cheap — https://www.charlesproxy.com/. They say this one is good as well and free — https://mitmproxy.org/. But I don’t like the interface.

React component lifecycle methods

Flow of lifecycle methods I checked it with react 16.2.0. On a client When component is rendered for the first time

constructor
componentWillMount
render
componentDidMount

constructor

componentWillMount

render

componentDidMount

How to count resource usage in linux

ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head -n 5

1	ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem \| head -n 5

It will output something like this:

PID  	PPID 	CMD                      	%MEM 	%CPU
2591	2113 	/usr/lib/firefox/firefox    7.3 	43.5
2549   2520 	/usr/lib/virtualbox/Virtual 3.4  	8.2
2288       1 	/home/gacanepa/.dropbox-dis	1.4	0.3
1889   1543	c:\TeamViewer\TeamViewer.ex	1.0	0.2
2113	1801	/usr/bin/cinnamon		0.9	3.5

PID PPID CMD %MEM %CPU

2591 2113 /usr/lib/firefox/firefox 7.3 43.5

2549 2520 /usr/lib/virtualbox/Virtual 3.4 8.2

2288 1 /home/gacanepa/.dropbox-dis 1.4 0.3

1889 1543 c:\TeamViewer\TeamViewer.ex 1.0 0.2

2113 1801 /usr/bin/cinnamon 0.9 3.5

Javascript mocking frameworks

Classical one — http://sinonjs.org/. TestDouble — https://github.com/testdouble/testdouble.js/blob/master/README.md There is a good video on using TestDouble from it’s creator: https://www.youtube.com/watch?v=nH8EnmdEBj4

Подборка статей по устройству javascript

http://dmitrysoshnikov.com/