Language extensibility

To enable a multilanguage approach in Azure Functions, the runtime is split into two building blocks:

  • The host that has the responsibility to manage the function events
  • The language worker process in which the functions, written in the different programming languages, run.

The following diagram shows the architecture of the aforementioned building blocks:

The two layers communicate with each other using the gRPC (Remote Procedure Call (RPC)), a modern, open source, high-performance RPC framework that can run in any environment and can efficiently connect services in and across data centers. It supports load balancing, ...

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