chenkaiyue

 An initial thought is that we can use kubectl to create grid CRD for target resource ; A controller watch grid CRD and init a specialized controller to watch...

**What would you like to be added/modified**: Now we use go http library, for more comprehensive functions, replace it by http server project/library.

**What would you like to be added/modified**: Some cache such as endpointsMap should add more locks **Why is this needed**: For concurrency safety

Is not necessary to call rebuildEndpointsMap every change happened.

Watermark of cpu usage percent

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Watermark of cpu usage percent

Mem percent watermark

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watermark of memory usage percent

Memory usage watermark

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Watermark of memory usage