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BaltoStar_12467's avatar
BaltoStar_12467
Jun 03, 2013

iRule optimization

My iRule needs to exact-match on host and wild-card match on path.

 

 

when HTTP_REQUEST {

 

switch [string tolower [HTTP::host]] {

 

"internal.mycompany.com" {

 

switch -glob [string tolower [HTTP::path]] {

 

"/api1/*" {

 

 

 

Is this optimized as it is ? Would re-structuring as a single iRule provide further optimization ?

 

 

set $host [string tolower [HTTP::host]]

 

set $path [string tolower [HTTP::path]]

 

set $host-uri = "$host/$path"

 

when HTTP_REQUEST {

 

switch -glob [$host-uri] {

 

"internal.mycompany.com/api1/*" {

 

 

application delivery
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devops
iRules

2 Replies

  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Jun 03, 2013
    i think the 1st one is better.

    1st 

    [root@ve10:Active] config  b rule myrule list
rule myrule {
   timing on
when HTTP_REQUEST {
  switch [string tolower [HTTP::host]] {
    "internal.mycompany.com" {
      switch -glob [string tolower [HTTP::path]] {
        "/api1/*" { }
        "/api2/*" { }
        "/api3/*" { }
      }
    }
  }
}
}

 ab -n 1000 http://internal.mycompany.com/api3/something

[root@ve10:Active] config  b rule myrule show all
RULE myrule
+-> HTTP_REQUEST   1000 total   0 fail   0 abort
    |     Cycles (min, avg, max) = (40248, 54421, 442966)
  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Jun 03, 2013
    2nd 

    [root@ve10:Active] config  b rule myrule list
rule myrule {
   timing on
when HTTP_REQUEST {
  set host [string tolower [HTTP::host]]
  set path [string tolower [HTTP::path]]
  set host-uri "$host/$path"
  switch -glob $host-uri {
    "internal.mycompany.com/api1/*" { }
    "internal.mycompany.com/api2/*" { }
    "internal.mycompany.com/api3/*" { }
  }
}
}

 ab -n 1000 http://internal.mycompany.com/api3/something

[root@ve10:Active] config  b rule myrule show all
RULE myrule
+-> HTTP_REQUEST   1000 total   0 fail   0 abort
    |     Cycles (min, avg, max) = (34883, 69650, 510200)