Tested with Apache Spark 2.1.0, Python 2.7.13 and Java 1.8.0_112
For older versions of Spark and ipython, please, see also previous version of text.
Tested with Apache Spark 2.1.0, Python 2.7.13 and Java 1.8.0_112
For older versions of Spark and ipython, please, see also previous version of text.
// NOTE: only escapes a " if it's not already escaped | |
function escapeDoubleQuotes(str) { | |
return str.replace(/\\([\s\S])|(")/g,"\\$1$2"); // thanks @slevithan! | |
} | |
escapeDoubleQuotes("ab"); // ab => ab | |
escapeDoubleQuotes("a\"b"); // a"b => a\"b | |
escapeDoubleQuotes("a\\\"b"); // a\"b => a\"b | |
escapeDoubleQuotes("a\\\\\"b"); // a\\"b => a\\\"b | |
escapeDoubleQuotes("a\\\\\\\"b"); // a\\\"b => a\\\"b |
I’m looking for any tips or tricks for making chrome headless mode less detectable. Here is what I’ve done so far:
Set my args as follows:
const run = (async () => {
const args = [
'--no-sandbox',
'--disable-setuid-sandbox',
'--disable-infobars',
(function() { | |
'use strict'; | |
// keep track of all the opened tab | |
let tabs = {}; | |
// Get all existing tabs | |
chrome.tabs.query({}, function(results) { | |
results.forEach(function(tab) { | |
tabs[tab.id] = tab; |
# See list of docker virtual machines on the local box | |
$ docker-machine ls | |
NAME ACTIVE URL STATE URL SWARM DOCKER ERRORS | |
default * virtualbox Running tcp://192.168.99.100:2376 v1.9.1 | |
# Note the host URL 192.168.99.100 - it will be used later! | |
# Build an image from current folder under given image name | |
$ docker build -t gleb/demo-app . |
user web; | |
# One worker process per CPU core. | |
worker_processes 8; | |
# Also set | |
# /etc/security/limits.conf | |
# web soft nofile 65535 | |
# web hard nofile 65535 | |
# /etc/default/nginx |
For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.
Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon
with HyperThreading enabled, but it can work without problem on slower machines.
You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.
# Redis Cheatsheet | |
# All the commands you need to know | |
redis-server /path/redis.conf # start redis with the related configuration file | |
redis-cli # opens a redis prompt | |
# Strings. |
require('dotenv').config() | |
const cors = require('cors') | |
const bodyParser = require('body-parser') | |
const express = require('express') | |
const expressJwt = require('express-jwt') | |
const cookieSession = require('cookie-session') | |
const jwt = require('jsonwebtoken') | |
const passport = require('passport') | |
const GoogleStrategy = require('passport-google-oauth20').Strategy | |
const jwtSecret = Buffer.from('Zn8Q5tyZ/G1MHltc4F/gTkVJMlrbKiZt', 'base64') |
/** | |
* Install and enable the rabbitmq_delayed_message_exchange plugin as described by Alvaro Videla in this blogpost: | |
* https://www.rabbitmq.com/blog/2015/04/16/scheduling-messages-with-rabbitmq/ | |
*/ | |
const amqp = require('amqplib'); | |
const exchange = 'yourExchangeName'; | |
const queue = 'yourQueueName'; | |
const queueBinding = 'yourQueueBindingName'; | |
// Message consumer |