wu-sheng commented on issue #2723: skywalking agent support label select URL: https://github.com/apache/skywalking/issues/2723#issuecomment-494310121 > However, I find that if we implement this feature, our queries will become more flexible and easier to integrate with other systems. Yes. But meanwhile, we have to face the performance concerns. The reason why we design the query API in the current way, is making sure the query latency measurable. > I hope that I can try not to change the original thing, only to achieve this through extension. Looking forward to your Suggestions! There are two major challenges 1. How to query metadata. Service is an atomic object but based on instance register. So how do you plan to make tag exists in service level. And how do you make sure it is reasonable. 1. Query topology based on each service, and merged them on UI. If the performance is acceptable. The master branch UI topology is just changed. It supports query topology(one depth level) when you choose one at the left.
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