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MongoDB Performance Troubleshooting Guide

References

Official docs

For all of these docs, be sure to select your MongoDB version from the left dropdown!

• Analyzing MongoDB Performance
• MongoDB Limits & Thresholds

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/*
 * This work (Modern Encryption of a String C#, by James Tuley), 
 * identified by James Tuley, is free of known copyright restrictions.
 * https://gist.github.com/4336842
 * http://creativecommons.org/publicdomain/mark/1.0/ 
 */

using System;
using System.IO;
using System.Text;

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HAProxy and Let's Encrypt

HAProxy is a open-source TCP/HTTP load-balancing proxy server supporting native SSL, keep-alive, compression CLI, and other modern features.

Let’s Encrypt is a free, automated, and open certificate authority (CA), run for the public’s benefit. Let’s Encrypt is a service provided by the Internet Security Research Group (ISRG).

Concept

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Covers both tools

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// Zero-Clause BSD (more permissive than MIT, doesn't require copyright notice)
// 
// Permission to use, copy, modify, and/or distribute this software for any purpose
// with or without fee is hereby granted.
// 
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
// OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER

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GoDaddy SSL Certificates PEM Creation for HaProxy (Ubuntu 14.04)

1 Acquire your SSL Certificate

Generate your CSR This generates a unique private key, skip this if you already have one.

sudo openssl genrsa -out  etc/ssl/yourdomain.com/yourdomain.com.key 1024

Next generate your CSR (Certificate Signing Request), required by GoDaddy:

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using System;
using System.Net.Http;
using System.Threading.Tasks;
using System.Text.RegularExpressions;
using System.Threading;
using System.Collections.Generic;
using System.Linq;

using Microsoft.ClearScript.V8;

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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using StackExchange.Redis;

namespace CitySurvival.Redis
{

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/* BitSet.cs -- A vector of bits.
    Copyright (C) 1998, 1999, 2000, 2001, 2004, 2005  Free Software Foundation, Inc.
 
 This file is part of GNU Classpath.
 
 GNU Classpath is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2, or (at your option)
 any later version.
 

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/*
Author: Eitan Blumin | https://www.eitanblumin.com
Create Date: 2020-03-18
Last Update: 2020-06-22
Description:
  This script will detect currently running sessions in your database which are running DBCC SHRINK commands.
  It will also output the name of any tables and indexes the session is currently locking.
  
  Use this query to find out what causes a SHRINK to run for too long.
  You may need to run it multiple times to "catch" the relevant info.