PHP+redis实现的限制抢购防止商品超发功能详解(2)

<?php
//获取商品key名称
function getKeyName($v)
{
  return "send_goods_".$v;
}
//日志写入方法
function writeLog($msg,$v)
{
  $log = $msg.PHP_EOL;
  file_put_contents("log/$v.log",$log,FILE_APPEND);
}

[root@localhost oversend]# ab -c 100 -n 200 http://192.168.0.213:8083/index.php?v=way1
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 192.168.0.213 (be patient)
Completed 100 requests
Completed 200 requests
Finished 200 requests
Server Software:    nginx
Server Hostname:    192.168.0.213
Server Port:      8083
Document Path:     /index.php?v=way1
Document Length:    0 bytes
Concurrency Level:   100
Time taken for tests:  0.089 seconds
Complete requests:   200
Failed requests:    0
Write errors:      0
Total transferred:   30600 bytes
HTML transferred:    0 bytes
Requests per second:  2243.13 [#/sec] (mean)
Time per request:    44.581 [ms] (mean)
Time per request:    0.446 [ms] (mean, across all concurrent requests)
Transfer rate:     335.16 [Kbytes/sec] received
Connection Times (ms)
       min mean[+/-sd] median  max
Connect:    0  6  2.2   5   17
Processing:   2  28 16.3   25   55
Waiting:    1  26 15.2   24   50
Total:     5  34 16.3   30   60
Percentage of the requests served within a certain time (ms)
 50%   30
 66%   35
 75%   54
 80%   56
 90%   57
 95%   60
 98%   60
 99%   60
 100%   60 (longest request)

[root@localhost log]# less -N way1.log 
   1 抢到商品
   2 抢到商品
   3 抢到商品
   4 抢到商品
   5 抢到商品
   6 抢到商品
   7 没有抢到商品
   8 没有抢到商品
   9 没有抢到商品
   10 没有抢到商品
   11 没有抢到商品
   12 没有抢到商品

[root@localhost oversend]# ab -c 100 -n 200 http://192.168.0.213:8083/index.php?v=way2
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 192.168.0.213 (be patient)
Completed 100 requests
Completed 200 requests
Finished 200 requests
Server Software:    nginx
Server Hostname:    192.168.0.213
Server Port:      8083
Document Path:     /index.php?v=way2
Document Length:    0 bytes
Concurrency Level:   100
Time taken for tests:  0.087 seconds
Complete requests:   200
Failed requests:    0
Write errors:      0
Total transferred:   31059 bytes
HTML transferred:    0 bytes
Requests per second:  2311.68 [#/sec] (mean)
Time per request:    43.259 [ms] (mean)
Time per request:    0.433 [ms] (mean, across all concurrent requests)
Transfer rate:     350.58 [Kbytes/sec] received
Connection Times (ms)
       min mean[+/-sd] median  max
Connect:    0  6  5.4   5   13
Processing:   3  31 16.6   30   70
Waiting:    1  30 16.6   30   70
Total:     5  37 18.5   32   82
Percentage of the requests served within a certain time (ms)
 50%   32
 66%   41
 75%   45
 80%   50
 90%   68
 95%   80
 98%   81
 99%   82
 100%   82 (longest request)