hariharan-uno

Keybase proof

I hereby claim:

• I am hariharan-uno on github.
• I am hariharan_uno (https://keybase.io/hariharan_uno) on keybase.
• I have a public key ASBHuJkcaA5BOowpEdql7Hls2EYRINCk53pq-ERLP3q9tAo

To claim this, I am signing this object:

hariharan-uno

Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

• They are the people who get things done. Effective Engineers produce results.

Adopt the Right Mindsets

hariharan-uno

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.

hariharan-uno

package main

// @lizrice, mostly copied from @doctor_julz: https://gist.github.com/julz/c0017fa7a40de0543001

import (
	"fmt"
	"os"
	"os/exec"
	"syscall"
)

hariharan-uno

package main

import (
	"fmt"
	"os"
	"os/exec"
	"syscall"
)

func main() {

hariharan-uno

HOSTIP=`netstat -rn | grep "^0.0.0.0 " | cut -d " " -f10`
/home/vagrant/recond -marksman=http://$HOSTIP:3000 -nats=tcp://$HOSTIP:4222 &
echo "recond started..."

hariharan-uno

package main

import (
	"fmt"
	"strconv"

	"github.com/extemporalgenome/slug"
)

type person struct {

hariharan-uno

package main

import (
	"github.com/gorilla/websocket"
	"io"
	"log"
	"net/http"
)

func handler(w http.ResponseWriter, r *http.Request) {

hariharan-uno

//Copied from https://groups.google.com/forum/#!msg/golang-nuts/dEfqPOSccIc/hoq8jdPTBIcJ

package main

import(
    "crypto/rand"
    "crypto/tls"
    "io/ioutil"
    "log"
    "net"

hariharan-uno

#include <sys/wait.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
int
main(int argc, char *argv[])
{
    int pipefd[2];
    pid_t cpid;