Playing With Web.go
Finally, curiosity go the best of me. I decided to install Go language and it's web.py like framework called web.go.
My OS Info
OS X Snow Leopard, 2.26 GHz Intel Core 2 Duo, 8 GB 1067 MHz DDR3 RAM
Prerequisites(on OS X)
To install go, simply download the package and double click.
To install web.go:
# You may need to restart your terminal session after installing Go language. sudo go get github.com/hoisie/web
Hello World Page
Follow the instruction on web.go github for creating the hello world page. I copy-pasted the instruction here for convenience:
# Do all 3 steps in the same directory # 1. Create hello.go package main import ( "github.com/hoisie/web" ) func hello(val string) string { return "hello " + val } func main() { web.Get("/(.*)", hello) web.Run("0.0.0.0:9999") } # 2. Compile hello.go go build hello.go # 3. Run the executable ./hello # Visit: http://localhost:9999/world to see the page.
The compilation time is miniscule, but that doesn't say much because our application is tiny. Once we got the hello world page up, like a true tech blogger, we have to benchmark it using AB tool.
# 100,000 requests. 210 simultaneous requests. Keep-alive is on. ab -k -n 100000 -c 210 http://localhost:9999/world
The result is quite astonishing. On fresh boot, our little app server took only 4.1 MB of RAM and after AB is finished, the memory usage climbs to 15.3 MB. Not bad at all.
Now let's look at the AB result:
Server Software: web.go Server Hostname: localhost Server Port: 9999 Document Path: /world Document Length: 11 bytes Concurrency Level: 210 Time taken for tests: 25.870 seconds Complete requests: 100000 Failed requests: 0 Write errors: 0 Keep-Alive requests: 100000 Total transferred: 16700000 bytes HTML transferred: 1100000 bytes Requests per second: 3865.54 [#/sec] (mean) Time per request: 54.326 [ms] (mean) Time per request: 0.259 [ms] (mean, across all concurrent requests) Transfer rate: 630.41 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 1 22.8 0 1000 Processing: 0 54 36.6 51 486 Waiting: 0 54 36.6 51 486 Total: 0 54 42.9 51 1159 Percentage of the requests served within a certain time (ms) 50% 51 66% 57 75% 62 80% 71 90% 102 95% 116 98% 155 99% 175 100% 1159 (longest request)
3865.54 requests per second and 0 failed requests! I am very impressed, this result beats anything I've ever tested in this laptop. And look at that time per request: 54 ms. Wow!