Title: Release 4.10.42
On 5/5/2010 4:05 PM, Andy Schmidt wrote:


<snip/>

 

The golden rule for external tests and for RBLs is – if you have multiple lines using the SAME “command” (e.g., the 18 “SNF” lines), or referring to the same external program (e.g., 5 invURIBL lines), or referring to the same blacklist (10 lines checking different return values), THEN only the FIRST line will actually “run” the test against that resource (e.g., run the external program, lookup the IP in the RBL). The OTHER lines will just evaluate the return code differently without rerunning the test.

 

Now with the internal Sniffer implementation, we have three DIFFERENT commands (SNF, SNFIP, SNFIPREP). So it’s worthwhile confirming whether the same golden rule applies here even though these are NOT multiple lines of the SAME command.


The same rule applies --- Run the test once, use the results of the test many times.

However in the case of SNFIP and SNFIPREP the cost of the test is so small that it cannot be measured. The IP reputation database is local (in memory) and immediately accessible (there is no delay or network traffic involved). The only work that gets done is a little bit of math.

Best,

_M

-- 
President
MicroNeil Research Corporation
www.microneil.com




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