craigtp

Advanced Distributed System Design Course - Udi Dahan

Notes by Craig Phillips

Fallacies of Distributed Computing

• There are 11 fallacies of Distributed Computing:
  1. The network is reliable
  2. Latency isn’t a problem
  3. Bandwidth isn’t a problem
  4. The network is secure

5. The topology won’t change

ww9

Use struct{} as keys for context.Value() in Go

In the other file of this gist I detail why we should use struct{} as context.Value() keys and not int or string. Open gist to see main.go but the TLDR is:

	type key struct{}
	ctx = context.WithValue(ctx, key{}, "my value") // Set value
	myValue, ok := ctx.Value(key{}).(string) // Get value

ti24horas

internal class ConfigurableLoggerFiltering : IFilterLoggerSettings
    {
        private CancellationTokenSource cts;
        private IChangeToken token;
        private List<(string category, LogLevel level)> levels = new List<(string category, LogLevel level)>();

        public ConfigurableLoggerFiltering()
        {
            this.Reload();
        }

OndraZizka

#!/bin/bash

####  Restart Bluetooth
if [ "$1" == "resetBT" ] ; then
  sudo rfkill block bluetooth && sleep 0.1 && sudo rfkill unblock bluetooth;
  exit;
fi;

#### Toggle listen/speak
if [ "$1" == "" -o "$1" == "toggle" ] ; then

itaysk

curl -L --fail "https://hub.docker.com/v2/repositories/${DOCKERHUB_REPO}/${DOCKERHUB_IMAGE}/tags/?page_size=1000" | \
	jq '.results | .[] | .name' -r | \
	sed 's/latest//' | \
	sort --version-sort | \
	tail -n 1

gazlu

sqlcmd -E -S "(localdb)\v11.0" -q "BACKUP DATABASE <DBNAME> TO DISK='<DRIVE>:\<FOLDER_PATH>\<BACKUP_FILE_NAME>.bak'"

paladini

Setup redis-cli without the whole Redis Server on AWS EC2

This fast tutorial will teach you how to install redis-clion AWS EC2 without having to install the whole Redis Server. Firstly, SSH into your EC2 instance and run the following command:

$ sudo yum install gcc

This may return an "already installed" message, but that's OK. After that, just run:

$ wget http://download.redis.io/redis-stable.tar.gz && tar xvzf redis-stable.tar.gz && cd redis-stable && make && sudo cp src/redis-cli /usr/local/bin/ && sudo chmod 755 /usr/local/bin/redis-cli

wojteklu

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

---

General rules

1. Follow standard conventions.
2. Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
3. Boy scout rule. Leave the campground cleaner than you found it.
4. Always find root cause. Always look for the root cause of a problem.

Design rules

jcouture100

// Reset the styles
scintilla.StyleResetDefault();
scintilla.Styles[Style.Default].Font = "Courier New";
scintilla.Styles[Style.Default].Size = 10;
scintilla.StyleClearAll();

// Set the SQL Lexer
scintilla.Lexer = Lexer.Sql;

// Show line numbers

hernamesbarbara

Principles of Adult Behavior

1. Be patient. No matter what.
2. Don’t badmouth: Assign responsibility, not blame. Say nothing of another you wouldn’t say to him.
3. Never assume the motives of others are, to them, less noble than yours are to you.
4. Expand your sense of the possible.
5. Don’t trouble yourself with matters you truly cannot change.
6. Expect no more of anyone than you can deliver yourself.
7. Tolerate ambiguity.
8. Laugh at yourself frequently.