initials-avatar

Generate an avatar image from a user's initials. Image background color depends on name hashes(consistent hashing).

Online Demo

https://initials.herokuapp.com

You may switch to heroku-branch to see how to deploy to heroku.

Installation

VERSION REQUIRED GO 1.3 or greater

$ go get github.com/holys/initials-avatar/...

Usage

Lib Example

import  "github.com/holys/initials-avatar"

a := avatar.New("/path/to/fontfile")
b, _ := a.DrawToBytes("David", 128)
// now `b` is image data which you can write to file or http stream.

HTTP Example

// run the http server. The port is :3000 by default. Assumes $GOBIN is in your $PATH.
$ avatar server

// try it on your browser
// http://127.0.0.1:3000/hello 

// to view avaliable options
$ avatar server --help

// Chinese example
http://127.0.0.1:3000/%E5%AD%94

HTTP Benchmark

Environment:

MacBook Pro (Retina, 13-inch, Mid 2014)
Processor: 2.6 GHz Intel Core i5
Memory: 8 GB 1600 MHz DDR3

With logger

$ wrk -t12 -c400 -d30s http://10.20.142.147:3000/a
Running 30s test @ http://10.20.142.147:3000/a
  12 threads and 400 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency    14.18ms   20.56ms 127.10ms   94.18%
    Req/Sec     2.36k     1.34k    5.92k    62.66%
  766657 requests in 30.04s, 1.32GB read
  Socket errors: connect 0, read 150, write 6, timeout 1915
Requests/sec:  25519.86
Transfer/sec:     45.00MB

Without logger

$ wrk -t12 -c400 -d30s http://10.20.142.147:3000/a
Running 30s test @ http://10.20.142.147:3000/a
  12 threads and 400 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     7.53ms   11.28ms 195.48ms   96.19%
    Req/Sec     3.66k     2.29k   47.47k    75.96%
  1285314 requests in 30.00s, 589.60MB read
  Socket errors: connect 0, read 276, write 0, timeout 1872
  Non-2xx or 3xx responses: 1
Requests/sec:  42849.74
Transfer/sec:     19.66MB

Thanks @lixiaojun for his work.

LICENSE

MIT LICENSE, see LICENSE for details.