1 新旧版本实现
旧版本：PHP 语言实现, 应用屡次 DB 查问来生成一个用户名，再 DB 查问用户表，确保用户名未反复
新版本：PHP 语言实现, 从 Redis 间接获取一个可用用户名，注册时候再判断是否未反复
Go 版本：Go 语言实现，其余统一
这里的优化次要有两点：
1. 次要是采纳发号器的思维，预生成可用的账号，而不是每次用的时候才生成
2. 把判断是否未反复滞后，真正实现注册的那一步才去判断，因为很多用户下载了游戏，未必走到注册那一步，大略只有 80% 出头的激活注册率
2 压测体现
ab 压测各情景下均屡次压测，取较两头值的一次数据
2.1 旧版本
terence@k8s-master:~$ ab -c 10 -n 50 -p post http://dksdk_api.test/api/v7/user/registerone
ab: Could not open POST data file (post): No such file or directory
terence@k8s-master:~$ ab -c 10 -n 50 -p a.txt http://dksdk_api.test/api/v7/user/registerone
This is ApacheBench, Version 2.3 <$Revision: 1807734 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking dksdk_api.test (be patient).....done
Server Software: nginx
Server Hostname: dksdk_api.test
Server Port: 80
Document Path: /api/v7/user/registerone
Document Length: 175 bytes
Concurrency Level: 10
Time taken for tests: 25.667 seconds
Complete requests: 50
Failed requests: 40
(Connect: 0, Receive: 0, Length: 40, Exceptions: 0)
Total transferred: 29886 bytes
Total body sent: 7950
HTML transferred: 8636 bytes
Requests per second: 1.95 [#/sec] (mean)
Time per request: 5133.476 [ms] (mean)
Time per request: 513.348 [ms] (mean, across all concurrent requests)
Transfer rate: 1.14 [Kbytes/sec] received
0.30 kb/s sent
1.44 kb/s total
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.2 0 1
Processing: 2091 4931 1898.5 4688 10802
Waiting: 2091 4931 1898.5 4688 10802
Total: 2091 4931 1898.6 4688 10802
Percentage of the requests served within a certain time (ms)
50% 4688
66% 6068
75% 6105
80% 6189
90% 7721
95% 8355
98% 10802
99% 10802
100% 10802 (longest request)均匀耗时 513ms, 其中Lumen 框架启动大略 30~100ms 以内，DB查问视状况是否现实大略 500ms 左右，非对称加密个位数级别若干毫秒可忽略不计
2.2 新版本
terence@k8s-master:~$ ab -c 10 -n 50 -p a.txt http://dksdk_api_v2.test/api/v7/user/registerone
This is ApacheBench, Version 2.3 <$Revision: 1807734 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking dksdk_api_v2.test (be patient).....done
Server Software: nginx
Server Hostname: dksdk_api_v2.test
Server Port: 80
Document Path: /api/v7/user/registerone
Document Length: 346 bytes
Concurrency Level: 10
Time taken for tests: 1.715 seconds
Complete requests: 50
Failed requests: 40
(Connect: 0, Receive: 0, Length: 40, Exceptions: 0)
Total transferred: 26941 bytes
Total body sent: 8100
HTML transferred: 17241 bytes
Requests per second: 29.15 [#/sec] (mean)
Time per request: 343.076 [ms] (mean)
Time per request: 34.308 [ms] (mean, across all concurrent requests)
Transfer rate: 15.34 [Kbytes/sec] received
4.61 kb/s sent
19.95 kb/s total
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.2 0 1
Processing: 80 336 133.9 343 621
Waiting: 80 336 133.9 343 621
Total: 81 337 133.8 343 621
Percentage of the requests served within a certain time (ms)
50% 343
66% 375
75% 410
80% 474
90% 521
95% 547
98% 621
99% 621
100% 621 (longest request)均匀耗时 34ms, 只有旧版本的6.6%，其中Lumen 框架启动大略 30~100ms 以内，DB查问大略 200ms 左右，非对称加密个位数级别若干毫秒可忽略不计
2.3 旧版本 开启 Opcache
terence@k8s-master:~$ ab -c 10 -n 50 -p a.txt http://dksdk_api.test/api/v7/user/registerone
This is ApacheBench, Version 2.3 <$Revision: 1807734 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking dksdk_api.test (be patient).....done
Server Software: nginx
Server Hostname: dksdk_api.test
Server Port: 80
Document Path: /api/v7/user/registerone
Document Length: 420 bytes
Concurrency Level: 10
Time taken for tests: 19.284 seconds
Complete requests: 50
Failed requests: 27
(Connect: 0, Receive: 0, Length: 27, Exceptions: 0)
Total transferred: 42057 bytes
Total body sent: 7950
HTML transferred: 20807 bytes
Requests per second: 2.59 [#/sec] (mean)
Time per request: 3856.747 [ms] (mean)
Time per request: 385.675 [ms] (mean, across all concurrent requests)
Transfer rate: 2.13 [Kbytes/sec] received
0.40 kb/s sent
2.53 kb/s total
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.1 0 0
Processing: 1830 3689 1213.6 3527 7273
Waiting: 1830 3689 1213.6 3527 7273
Total: 1830 3690 1213.6 3527 7273
Percentage of the requests served within a certain time (ms)
50% 3527
66% 3911
75% 4534
80% 4907
90% 5604
95% 5639
98% 7273
99% 7273
100% 7273 (longest request)均匀耗时 385ms, 相当于只节俭了Lumen 框架启动所需的工夫，耗时大头的 DB 查问还是原样
2.4 新版本 开启 Opcache
terence@k8s-master:~$ ab -c 10 -n 50 -p a.txt http://dksdk_api_v2.test/api/v7/user/registerone
This is ApacheBench, Version 2.3 <$Revision: 1807734 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking dksdk_api_v2.test (be patient).....done
Server Software: nginx
Server Hostname: dksdk_api_v2.test
Server Port: 80
Document Path: /api/v7/user/registerone
Document Length: 345 bytes
Concurrency Level: 10
Time taken for tests: 0.143 seconds
Complete requests: 50
Failed requests: 26
(Connect: 0, Receive: 0, Length: 26, Exceptions: 0)
Total transferred: 26951 bytes
Total body sent: 8100
HTML transferred: 17251 bytes
Requests per second: 349.37 [#/sec] (mean)
Time per request: 28.623 [ms] (mean)
Time per request: 2.862 [ms] (mean, across all concurrent requests)
Transfer rate: 183.91 [Kbytes/sec] received
55.27 kb/s sent
239.18 kb/s total
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.1 0 0
Processing: 4 27 18.4 22 89
Waiting: 4 27 18.4 22 89
Total: 4 27 18.4 22 90
Percentage of the requests served within a certain time (ms)
50% 22
66% 31
75% 36
80% 42
90% 52
95% 56
98% 90
99% 90
100% 90 (longest request)均匀耗时 2.86ms, 节俭了Lumen 框架启动所需的工夫，没有 DB 查问，只有一次 Redis 查问, 毫秒级别能就搞定了
2.5 新版本 Go 语言
terence@k8s-master:~$ ab -c 10 -n 50 -p a.txt http://192.168.10.83:8080/registerone
This is ApacheBench, Version 2.3 <$Revision: 1807734 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking 192.168.10.83 (be patient).....done
Server Software:
Server Hostname: 192.168.10.83
Server Port: 8080
Document Path: /registerone
Document Length: 0 bytes
Concurrency Level: 10
Time taken for tests: 0.050 seconds
Complete requests: 50
Failed requests: 0
Total transferred: 3750 bytes
Total body sent: 7550
HTML transferred: 0 bytes
Requests per second: 1007.03 [#/sec] (mean)
Time per request: 9.930 [ms] (mean)
Time per request: 0.993 [ms] (mean, across all concurrent requests)
Transfer rate: 73.76 [Kbytes/sec] received
148.50 kb/s sent
222.25 kb/s total
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 4 3.0 3 10
Processing: 0 5 3.3 6 17
Waiting: 0 4 3.1 5 10
Total: 5 9 4.4 8 20
Percentage of the requests served within a certain time (ms)
50% 8
66% 9
75% 10
80% 11
90% 19
95% 19
98% 20
99% 20
100% 20 (longest request)均匀耗时0.993ms，真香