Technical Tips
Well, its been ages since I started this little page.
too busy I guess, but now, I hope to be able to add a little
content to this part of the website.
Performance tips
Why is my search so slow
One of the most important aspects of performance is simply how long the
user waits for results. This could also be a somewhat complicated topic,
and there is certainly no magic-bullet solution. Below I will highlight a
few problems that I have come across at a number of sites, and which may
help in resolving "intermittent" problems in what are generally well
performing systems.
- EXACT PHRASE - using phrases containing stop words.
- THE ASTERIX - especially front truncation
- SORTING
- USING THE WRONG OPERATOR - INCL with EXACT INDEX / EQUAL with
INCLUSIVE INDEX
- SEARCHING ON FIELD WITH NO INDEX - dmr ignores UNIQUE indexes when
INDEX=record.* ! So watch out if you have deleted a file containing
indexes, and then use DMR with index=record.*
If you have a well
designed database, with generally good performance, then one or more of
the issues mentioned above could cause problems, and slow down all users.
HTH!
Web Server tips
Improved Security for Webserver Gateway Users
One of the big problems we have had, in using the Basis Webserver
Gateway is its simplistic security model. In an attempt to provide a more
robust security model that allowed for a complex set of rules about who
can see certain documents from within a BASIS Database, the following idea
came to mind
- Use a simple $UID=ACCESS_FIELD restriction in a View Restirction
- Use a Thesaurus that will map the users UID to one or more GROUPS
- Let ACCESS_FIELD be a multiple occuring field that will contain one
or more UID's or GROUPS that are allowed to access a particular
document.
Using a simple view restriction, and a Thesaurus can
provide very flexible security. A simple group of ALL, for example, can
contain all Users Id's. Smaller Groups for Projects, Or departments could
be easily created. Automatic creation of groups from a PeopleSoft Database
(for example) is easily done, and can be refreshed nightly so that
administrative overhead is kept to a minimum.
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