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I am developing a .NET application that consists of multiple services needing to share data efficiently. I am exploring various methods to achieve this, and I am seeking advice on the best approach to take. Requirements:

**Shared DbContext:

All services should use the same DbContext instance to ensure consistency and avoid issues related to multiple contexts.

Thread Safety:

The solution must be thread-safe as the services might be accessed concurrently.

Scalability:

The solution should scale as the application grows and more services are added.

Performance:

The solution should not introduce significant performance overhead.

I have looked into several methods, including:

Memory-Mapped Files: Useful for high-performance inter-process communication but seems complex for scaling across multiple services. Named Pipes: Provides a way for processes to communicate but seems limited in scalability. RabbitMQ: An option for decoupled and asynchronous communication, but I'm not sure if it's the best fit for memory sharing.

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    If the services don't share a process, sharing a DbContext (or any kind of object) is simply not possible, separate processes means separate instances. By the way, why is that even a requirement? Commented Jun 6, 2024 at 14:27
  • thanks @Alejandro because every sevice loads DBContrext. Commented Jun 6, 2024 at 15:15
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    From my comprehension, rabbitmq is a good choice for decoupling services. Redis for sharing data usually has good performances. Whether complex or limited mainly depends on how you manage the structure. Commented Jun 7, 2024 at 6:35
  • Thanks @FengzhiZhou but I want share dbcontext, I can or not, it is best practice or not Commented Jun 8, 2024 at 18:35
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    According to my research, you cannot do it, and it is not a good choice, as thread safety cannot be ensured and it will be hard to manage the lifetime is asp.net core. Commented Jun 11, 2024 at 9:38
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