Yeap,in our product design,some url is contains user id ,such as
/hello/11230（/hello/{userId}）,and our user number is more than 10000000,in your
example,it makes a lot trouble.How to deal this problem in any system in front
of controller?
附：那所有在java controller之上的系统都会有这个问题吧，这个该怎么解决呢？
然后我还发现，对于span来说，我说的这些url是作为endpointName来存储和展示的，url中的动态参数如果不模板化替换，任何场景都会造成内存溢出问题
在 2021-09-11 10:51:36，"Sheng Wu" <[email protected]> 写道：
>This is not about Kong, it is for all services, even same for service mesh.
>This thing is very simple, URI is the entity ID to measure metrics. If you
>put parameter in the URI, such as /prod/123, then this is an entity. When
>you have 1million product IDs, then you face potential OOM easily.
>
>dafang <[email protected]>于2021年9月11日 周六上午9:46写道：
>
>> Hi skywalking dev team:
>> I had read the source code in skywalking-kong,and I found that the
>> request_uri is wrote in request case.But I have heard that if the first
>> case if not set the url templated,the after will never set it again.If it's
>> set up,our endpoint will be double or triple or more.It will be a very big
>> problem for me.How to understand it?
>>
>>
>>
>>
>> 英文不太好，怕表达不清，再用中文叙述一下：
>>
>> 我最近阅读了skywalking-kong的源码，发现在记录request_url的时候，是直接记录的ngx.var.uri，这会导致url中携带动态参数，后面的系统会因为有了这个动态参数，而不进行模板化吧(记着之前听说过有这个机制)。这样就会导致系统存储的endpoint翻很多很多倍，如果打开了endpoint_alarm的话，那内存溢出估计会发生在skywalking启动的几分钟之内。这个问题开发团队有过专门的处理么？
>>
>>
>> yours
>> 大方
>> 2021.09.11
>
>--
>Sheng Wu 吴晟
>
>Apache SkyWalking
>Apache Incubator
>Apache ShardingSphere, ECharts, DolphinScheduler podlings
>Zipkin
>Twitter, wusheng1108
