Superskyyy commented on PR #10884:
URL: https://github.com/apache/skywalking/pull/10884#issuecomment-1579484822
A special case may require a change of how patternnames are stored in a rule.
When we first see a URI in batch001: users/**helloworldguy**/post/**234**
Then second uri in batch001: users/**helloworldguy**/post/**356**
We as human may know both highlighted names are variables, but its
impoosible for a algorithm to tell at first sight that "helloworldguy" is
actually a variable not a static endpoint path, it can only tell when seeing
more examples. (for example, seeing more than 10 differnt string combinations
at this exact path location)
So, if unluckily only this particular user called the endpoint during the
interval. the Pattern will become users/helloworldguy/post/{int} after the
first batch is analyzed.
then in sometime in the future it arrives one called
users/**anotheruser**/post/**759**, it won't be matched as the previous pattern
since the user changed.
> Solution is that only store a reference ID to endpoint names instead of
the actual string, when rendering it we get it dynamically from a table, when
remote ai services needs to extend the uri pattern (from one param to
multiple), it can freely change it without having to modify every record.
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