Was going to deploy a rest web service on Heroku and was curious if there was a big difference between handling very simple requests between the standard ways of deploying to Heroku for Flask/wsgi/Go: Golang Requests per second: 6446.75 [#/sec] (mean) Flask Requests per second: 1029.64 [#/sec] (mean) gunicorn+wsgi Requests per second: 2164.54 [#…

1. result

Golang Requests per second:  6446.75 [#/sec] (mean)
Flask Requests per second:  1029.64 [#/sec] (mean)
gunicorn+wsgi Requests per second:    2164.54 [#/sec] (mean)

2. shell

11:10:12 ~/Code/gofyourself (master)$ ab -k -c 20 -n 10000 http://localhost:5000/
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking localhost (be patient)
Completed 1000 requests
Completed 2000 requests
Completed 3000 requests
Completed 4000 requests
Completed 5000 requests
Completed 6000 requests
Completed 7000 requests
Completed 8000 requests
Completed 9000 requests
Completed 10000 requests
Finished 10000 requests


Server Software:        
Server Hostname:        localhost
Server Port:            5000

Document Path:          /
Document Length:        14 bytes

Concurrency Level:      20
Time taken for tests:   1.551 seconds
Complete requests:      10000
Failed requests:        0
Write errors:           0
Keep-Alive requests:    0
Total transferred:      1300000 bytes
HTML transferred:       140000 bytes
Requests per second:    6446.75 [#/sec] (mean)
Time per request:       3.102 [ms] (mean)
Time per request:       0.155 [ms] (mean, across all concurrent requests)
Transfer rate:          818.43 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       8
Processing:     1    3   0.7      3      12
Waiting:        0    3   0.7      3      12
Total:          1    3   0.7      3      12

Percentage of the requests served within a certain time (ms)
  50%      3
  66%      3
  75%      3
  80%      3
  90%      4
  95%      4
  98%      4
  99%      5
 100%     12 (longest request)
11:10:15 ~/Code/gofyourself (master)$ ab -k -c 20 -n 10000 http://localhost:5000/
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking localhost (be patient)
Completed 1000 requests
Completed 2000 requests
Completed 3000 requests
Completed 4000 requests
Completed 5000 requests
Completed 6000 requests
Completed 7000 requests
Completed 8000 requests
Completed 9000 requests
Completed 10000 requests
Finished 10000 requests


Server Software:        Werkzeug/0.8.3
Server Hostname:        localhost
Server Port:            5000

Document Path:          /
Document Length:        12 bytes

Concurrency Level:      20
Time taken for tests:   9.712 seconds
Complete requests:      10000
Failed requests:        0
Write errors:           0
Keep-Alive requests:    0
Total transferred:      1650000 bytes
HTML transferred:       120000 bytes
Requests per second:    1029.64 [#/sec] (mean)
Time per request:       19.424 [ms] (mean)
Time per request:       0.971 [ms] (mean, across all concurrent requests)
Transfer rate:          165.91 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.3      0       9
Processing:     1   19   3.8     18      90
Waiting:        1   19   3.8     18      90
Total:          3   19   3.9     18      91

Percentage of the requests served within a certain time (ms)
  50%     18
  66%     19
  75%     20
  80%     21
  90%     23
  95%     25
  98%     29
  99%     34
 100%     91 (longest request)
11:17:32 ~/Code/gofyourself (master)$ 
(.venv)11:40:05 ~/Code/gofyourself (master)$ ab -k -c 20 -n 10000 http://localhost:8000/
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking localhost (be patient)
Completed 1000 requests
Completed 2000 requests
Completed 3000 requests
Completed 4000 requests
Completed 5000 requests
Completed 6000 requests
Completed 7000 requests
Completed 8000 requests
Completed 9000 requests
Completed 10000 requests
Finished 10000 requests


Server Software:        gunicorn/0.17.2
Server Hostname:        localhost
Server Port:            8000

Document Path:          /
Document Length:        12 bytes

Concurrency Level:      20
Time taken for tests:   4.620 seconds
Complete requests:      10000
Failed requests:        0
Write errors:           0
Keep-Alive requests:    0
Total transferred:      1380828 bytes
HTML transferred:       120072 bytes
Requests per second:    2164.54 [#/sec] (mean)
Time per request:       9.240 [ms] (mean)
Time per request:       0.462 [ms] (mean, across all concurrent requests)
Transfer rate:          291.88 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    1   1.0      1      27
Processing:     1    8  26.3      6     474
Waiting:        0    7  20.9      5     474
Total:          1    9  26.3      6     475

Percentage of the requests served within a certain time (ms)
  50%      6
  66%      7
  75%      8
  80%      8
  90%     10
  95%     12
  98%     25
  99%     37
 100%    475 (longest request)
(.venv)11:40:29 ~/Code/gofyourself (master)$ 

app.py

from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello_world():
    return 'Hello World!'

if __name__ == '__main__':
    app.run()

web.go

package main

import (
    "fmt"
    "net/http"
    "os"
)

func main() {
    http.HandleFunc("/", hello)
    fmt.Println("listening...")
    err := http.ListenAndServe(":"+os.Getenv("PORT"), nil)
    if err != nil {
        panic(err)
    }
}

func hello(res http.ResponseWriter, req *http.Request) {
    fmt.Fprintln(res, "hello, world.")
}

wsgi-app.py

# gunicorn -w10 --keep-alive 60 wsgi-app

def application(environ, start_response):
    start_response("200 OK", [("Content-type", "text/plain")])
    return [ "Hello World!" ]