Does the grain service include all the features of grain

### Type of issue

Other (describe below)

### Description

Does it support timers and reminders? Is it single threaded execution? Does it support client calls.

What is the original intention of the design of grain service?

What scenarios are typically applied in?

Is it usually singleton?

### Page URL

https://learn.microsoft.com/zh-cn/dotnet/orleans/grains/grainservices?pivots=orleans-7-0

### Content source URL

https://github.com/dotnet/docs/blob/main/docs/orleans/grains/grainservices.md

### Document Version Independent Id

c7378f44-c6c8-35f9-c4ae-406d9ddaacd3

### Article author

@IEvangelist

### Metadata

* ID: 62522c1e-0bd0-d2bb-690e-761f8d681e98
* Service: **dotnet-orleans**