vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

vsviridov

container_commands:
  01_fix_static_cors:
    command: "/tmp/fix_static_cors.sh"
files:
  "/tmp/fix_static_cors.sh":
    mode: "000755"
    owner: root
    group: root
    content: |
      #!/bin/bash

bramswenson

Amazon SQS Notes

Queue Structure

• Queues are distributed
• Queues are limited to 120000 in-flight messages (use more small queues instead of one large queue)
• Queues may have any number of clients sending/receiving messages at once
• Queues can be created with a built in delay on message visibility
• Queues can be created just for dumping messages whose processing has failed

gist:72d56637b43d11658e03

// by dw @ bees & bombs >:)

int[][] result;
float t;

void setup() {
  setup_();
  result = new int[width*height][3];
}

john2x

Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors and Sequences

nicolashery

Elasticsearch: updating the mappings and settings of an existing index

Note: This was written using elasticsearch 0.9.

Elasticsearch will automatically create an index (with basic settings and mappings) for you if you post a first document:

$ curl -X POST 'http://localhost:9200/thegame/weapons/1' -d \
'{
  "_id": 1,

lukas-vlcek

// create an index with an analyzer "myindex"
curl -X PUT localhost:9200/myindex -d '
{
  "settings" : {`
    "index":{
      "number_of_replicas":0,
      "number_of_shards":1,
      "analysis":{
        "analyzer":{
          "first":{

karmi

require 'tire'

# Tire.configure { logger STDERR, level: 'debug' }

Tire.index('movie-titles') do
  delete
  create \
    settings: {
      index: {
        analysis: {