Patrik Šíma patriksima

Docker setup

Install the Docker UI application for macOS

brew install docker --cask

Open the Docker.app

from /Applications/Docker.app

Go to the Docker Dashboard

Wait until the "Docker Dashboard starting…"-message disappears (= Setup complete)

MongoDB C# Driver Cheat Sheet

As of releasing MongoDB 3.4 and C# Driver v2.4, original cheatsheet by Derek is outdated. In addition, it has some deficiencies like connecting to MongoDB, creating indexes, etc. This updated version works fine with C# Driver v2.4.7 and MongoDB v3.4.

Setup

Define Document Models

Note: Defined models and collections will be used in entire cheatsheet.

Moved to git repository: https://github.com/denji/nginx-tuning

NGINX Tuning For Best Performance

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.

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

	# Recursively optimize PNG and JPEG images using convert command
	#
	# `convert` is part of ImageMagick (http://www.imagemagick.org/). You will need to install it first.
	#
	# Author: Rajendra Kumar Bhochalya (http://rkb.io)
	#
	# @see https://developers.google.com/speed/docs/insights/OptimizeImages

	# Optimize all JPEG images in current directory and subdirectories
	find . -name "*.jpg" -exec convert "{}" -sampling-factor 4:2:0 -strip -quality 85 -interlace JPEG -colorspace RGB "{}" \; -exec echo "{}" \;

	# Install dependencies

	NGINX_VERSION=1.10.1 && \
	OPENSSL_VERSION=1.0.1t && \
	NPS_VERSION=1.11.33.3 && \

	sudo apt-get install unzip build-essential checkinstall git libpcre3 libpcre3-dev zlib1g zlib1g-dbg zlib1g-dev && \

	mkdir -p ~/sources/ && \

	namespace BloomFilter
	{
	using System;
	using System.Collections;

	/// <summary>
	/// Bloom filter.
	/// </summary>
	/// <typeparam name="T">Item type </typeparam>
	public class Filter<T>

	# После установки etckeeper

	/etc/etckeeper/etckeeper.conf VCS="git"

	etckeeper init && etckeeper commit

	# ------
	git config --global user.name "My Machine"
	git config --global user.email "[email protected]"

	#!/bin/bash
	#
	# Determine if master and slave mysql servers are in sync
	# If not, report it via STDOUT and non-zero return code
	# If are in sync, exit successfully
	#
	# Paramters:
	# -v - verbose, show stats even if 100% synchronized

	USER='YOUR_USER_NAME'

	# to generate your dhparam.pem file, run in the terminal
	openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048