performance - .htaccess mod_rewrite 性能

Question

我在 SOF 上搜索了很多关于 .htaccess 和 mod_rewrite 的内容，我想知道哪一个更快:

RewriteRule ^([a-z0-9]+)/?$ index.php?id=$1 [NC,L]
RewriteRule ^(.*)/?$ index.php?id=$1 [NC,L]
RewriteRule ^([^/]*)/?$ index.php?id=$1 [NC,L]

由于第一个仅接受字母和数字，它是否会使执行速度更快？

Answer 1

如有疑问，请进行测试。我设置了一个运行 Ubuntu 2011.10 和 Apache2 的测试服务器，并使用 siege 负载测试应用程序执行了 3 项测试。测试运行 1 分钟(或直到 5000 次失败)，有 50 个并发用户请求“/index.html”

测试 #1 使用以下重写规则配置:

RewriteEngine on
RewriteRule ^([a-z0-9]+)/?$ /index.html?id=$1 [NC,L]

围攻结果:

Transactions:                 300970 hits
Availability:                  98.36 %
Elapsed time:                  57.25 secs
Data transferred:              20.38 MB
Response time:                  0.00 secs
Transaction rate:            5257.12 trans/sec
Throughput:                     0.36 MB/sec
Concurrency:                    9.04
Successful transactions:      300970
Failed transactions:            5009
Longest transaction:            0.02
Shortest transaction:           0.00

使用重写规则配置测试#2:

RewriteEngine on
RewriteRule ^(.*)/?$ /index.html?id=$1 [NC,L]

结果:

Transactions:                 225244 hits
Availability:                  97.82 %
Elapsed time:                  42.43 secs
Data transferred:              15.25 MB
Response time:                  0.00 secs
Transaction rate:            5308.60 trans/sec
Throughput:                     0.36 MB/sec
Concurrency:                    8.71
Successful transactions:      225244
Failed transactions:            5009
Longest transaction:            0.18
Shortest transaction:           0.00

使用以下重写规则测试#3:

RewriteEngine on
RewriteRule ^([^/]*)/?$ /index.html?id=$1 [NC,L]

结果:

Transactions:                 210469 hits
Availability:                  97.68 %
Elapsed time:                  39.39 secs
Data transferred:              14.25 MB
Response time:                  0.00 secs
Transaction rate:            5343.21 trans/sec
Throughput:                     0.36 MB/sec
Concurrency:                    8.60
Successful transactions:      210469
Failed transactions:            5009
Longest transaction:            0.02
Shortest transaction:           0.00