ptarjan

Scaling your API with rate limiters

The following are examples of the four types rate limiters discussed in the accompanying blog post. In the examples below I've used pseudocode-like Ruby, so if you're unfamiliar with Ruby you should be able to easily translate this approach to other languages. Complete examples in Ruby are also provided later in this gist.

In most cases you'll want all these examples to be classes, but I've used simple functions here to keep the code samples brief.

Request rate limiter

This uses a basic token bucket algorithm and relies on the fact that Redis scripts execute atomically. No other operations can run between fetching the count and writing the new count.

nonsintetic

/*
 * This sketch illustrates how to set a timer on an SAMD21 based board in Arduino (Feather M0, Arduino Zero should work)
 * It should generate a 1Hz square wave as it is (thanks richdrich for the suggestion)
 * Some more info about Timer Counter works can be found in this article: 
 * http://www.lucadavidian.com/2017/08/08/arduino-m0-pro-il-sistema-di-clock/
 * and in the datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/SAM_D21_DA1_Family_DataSheet_DS40001882F.pdf
*/

uint32_t sampleRate = 1000; //sample rate in milliseconds, determines how often TC5_Handler is called

kirs

# Cleans up branches like:
# if Shopify.rails_next?
#   # Rails 5 login
# else 
#   # Rails 4 login
# end
module RuboCop
  module Cop
    module ShopifyRails
      class RailsNextUnless < Cop

jdneo

#define LED_PIN 13

#define CPU_HZ 48000000
#define TIMER_PRESCALER_DIV 1024

void startTimer(int frequencyHz);
void setTimerFrequency(int frequencyHz);
void TC3_Handler();

bool isLEDOn = false;

mikz

require 'formula'

class Luarocks < Formula

  homepage 'https://rocks.moonscript.org/'

  stable do
    url 'https://github.com/keplerproject/luarocks/archive/v2.3.0.tar.gz'
    sha256 '92c014889ec6a09c4bb492df6b7f7be784110d6abe031e16418342781ca5c5ce'
  end

mikz

#!/usr/bin/env ruby

require 'open-uri'
require 'json'


require 'shellwords'

ENV['NODE_PATH'] = '/usr/local/lib/node_modules'
# npm install -g licenses

rauchg

Minimum Viable Async with Node 6

With the release of Node 6.0.0, the surface of code that needs transpilation to use ES6 features has been reduced very dramatically.

This is what my current workflow looks like to set up a minimalistic and fast microservice using micro and async + await.

The promise

anynoomcz

Stručná historie dodávky systému EET

Plány Ministerstva financí

Během roku 2015 probíhaly nezanedbatelné aktivity v oblasti EET tak, jak je MF na počátku roku předestřelo v tiskové zprávě.

Průzkum trhu

Dle uvedeného plánu SPCSS (Státní pokladna Centrum sdílených služeb) uspořádalo průzkum trhu, který byl podkladem pro zúžení skupiny oslovených potenciálních dodavatelů, kde základním kvalifikačním předpokladem byla schopnost zpracovávat nabídku a následně dodávat systém v režimu utajených informací.

rezan

#
# Varnish AWS S3 Gateway VCL
#
# Allows global read (GET, HEAD) and ACL protected writes (POST, PUT, DELETE).
# When writing, pass in Content-Type and Content-MD5, both are optional.
#
# Params:
#
# %BUCKET% - S3 bucket name, S3 host may be regional
# %ACCESS_ID% - IAM access ID for bucket

paoloantinori

#!/bin/bash

export TKN=$(curl -X POST 'http://localhost:8080/auth/realms/master/protocol/openid-connect/token' \
 -H "Content-Type: application/x-www-form-urlencoded" \
 -d "username=admin" \
 -d 'password=admin' \
 -d 'grant_type=password' \
 -d 'client_id=admin-cli' | jq -r '.access_token')

curl -X GET 'http://localhost:8080/auth/admin/realms' \