User guide

eWON 500-2001-4001-4002 User Guide - User defined Web site

eWON 500®2001®4001®4002® Version 4_3_0 - User Guide - 10/5/05 - ©ACT'L sa - Page 185

10.3.2.3 Improving WEB performance using Web context variables and bASP

The example above introduces how the WEB performance can be improved.

Suppose to following example:

In this example, we print the config Name and Description fields for a Tag called "Tag1". There are 2 bASP blocks and we call SETSYS

TAG,"load" twice because at the end of the first bASP block there may be a context switch with another BASIC request loading the TAG edition

area with another Tag value (depending of the rest of the application, but let's take the worst case).

These 2 SETSYS TAG,"load" take some time and we have 2 BASIC context switch to generate the page.

The following implementation returns the same result with a significantly improved performance:

In this case Tag1 is loaded only once in the edition area and we generate only one BASIC context switch to execute the only bASP block.

<html>

<head>

</head>

<body>

Tag Name:<%#ExeSSI,

SETSYS TAG,"load","Tag1"

PRINT #0,GETSYS TAG,"Name"%>

Tag Desc:<%#ExeSSI,

SETSYS TAG,"load","Tag1"

PRINT #0,GETSYS TAG,"Description"%>

</body>

</html>

<html>

<head>

</head>

<body>

<%#ExeSSI,

SETSYS TAG,"load","Tag1"

tag1_name!= GETSYS TAG,"Name"

tag1_desc!= GETSYS TAG,"Description"%>

Tag Name:<%#VarSSI,tag1_name%>

Tag Desc:<%#VarSSI,tag1_desc%>

</body>

</html>