Ryan Leung

Add backend supports for tso and scheduling

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The component name might be changed later. Ref #1651

pd: add pd microservices section

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### First-time contributors' checklist - [ ] I've signed [**Contributor License Agreement**](https://cla-assistant.io/pingcap/docs-cn) that's required for repo owners to accept my contribution. ### What is changed, added or deleted? (Required) ###...

Fix the check of scatter status

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Ref https://github.com/pingcap/tidb/issues/46001

Benchmarks

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It's good to see this project is open source right now. Recently, I did some simple benchmarks for comparing `Marshal`/`Unmarshal` in different implementations and I also added fastpb. See https://github.com/rleungx/benchmarks/tree/main/protobuf....

*: refactor store info

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### What problem does this PR solve? Issue Number: Ref #7897 ### What is changed and how does it work? ```commit-message ``` ### Check List Tests - Unit test ###...

Split into multi-service architecture

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## Feature Request ### Describe your feature request related problem Currently, PD has more and more management services. As TiDB clusters are becoming larger and larger, it is increasingly important...

`TestEtcdClientSync` is flaky

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## Flaky Test ### Which jobs are failing ``` --- FAIL: TestEtcdClientSync (0.86s) etcdutil_test.go:185: Error Trace: /home/runner/work/pd/pd/pkg/utils/etcdutil/etcdutil_test.go:185 Error: Received unexpected error: [PD:etcd:ErrEtcdMemberRemove]etcdserver: server stopped: etcdserver: server stopped github.com/pingcap/errors.AddStack /home/runner/go/pkg/mod/github.com/pingcap/[email protected]/errors.go:174 github.com/pingcap/errors.(*Error).GenWithStackByCause...

*: add leak check to the main package

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### What problem does this PR solve? Issue Number: Ref #7782 ### What is changed and how does it work? ```commit-message ``` ### Check List Tests - Unit test ###...

*: fix the gctuner tests

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### What problem does this PR solve? Issue Number: Close #5953. ### What is changed and how does it work? Enable all gctuner-related tests. ```commit-message ``` ### Check List Tests...

mcs: register tso allocator

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### What problem does this PR solve? Issue Number: Close #xxx ### What is changed and how does it work? ```commit-message ``` ### Check List Tests - Unit test -...