Key Concepts

Stateful Functions

openYuanrong Functions support statefulness, where state refers to in-process private variables that can be accessed and modified during program execution. Typical states include static variables within a process, member variables in object-oriented programming, etc. Based on the concept of stateful functions, openYuanrong provides multi-language programming interfaces that allow single-machine classes developed in Python, Java, and C++ to be automatically converted into openYuanrong stateful functions for execution.

View the Stateful Function Development Guide.

Stateless Functions

Stateless functions are a special case of stateful functions. Their execution does not depend on state, only on input parameters. Based on the concept of stateless functions, openYuanrong provides multi-language programming interfaces that allow single-machine functions developed in Python, Java, and C++ to be automatically converted into openYuanrong stateless functions for execution.

View the Stateless Function Development Guide.

Data Objects

Data objects are memory data that can be shared and accessed across nodes among multiple openYuanrong functions in a distributed manner, supporting high-performance put/get access and modification based on shared memory. Additionally, they can serve as function call parameters and return values, automatically distributed and shared, supporting asynchronous Future semantics: for example, calling a function can return a data object Future reference, which can then be used as a new function call parameter; openYuanrong will automatically parse references during execution and manage data object lifecycles through automatic distributed reference counting.

View the Data Object Development Guide.

Data Streams

Data streams are ordered, unbounded memory data sets that can be passed and shared across nodes among multiple openYuanrong functions in a distributed manner, supporting high-performance pub/sub access based on shared memory, and supporting one-to-one, one-to-many, many-to-one, and other publish-subscribe models. Through data streams, you can conveniently decouple multiple different functions, achieving asynchronous streaming data passing and computation among multiple functions.

View the Data Stream Development Guide.