Executor#

Executor is a self-contained component and performs a group of tasks on a DocumentArray.

You can create an Executor by extending the Executor class and adding logic to endpoint methods.

Why should you use Executors?#

Once you have learned DocumentArray, you can use all its power and expressiveness to build a multi-modal/cross-modal application. But what if you want to go bigger? Organize your code into modules, serve and scale them independently as microservices? That’s exactly what Executors enable you to do.

  • Executors let you organize your DocumentArray-based functions into logical entities that can share configuration state, following OOP.

  • Executors convert your local functions into functions that can be distributed inside a Flow.

  • Executors inside a Flow can process multiple DocumentArrays concurrently, and be deployed easily to the cloud as part of your multi-modal/cross-modal application.

  • Executors can be easily containerized and shared with your colleagues using jina hub push/pull

Minimum working example#

from jina import Executor, requests


class MyExecutor(Executor):
    @requests
    def foo(self, docs, **kwargs):
        print(docs)  # process docs here

See Also

Executor and Flow are the two fundamental concepts in Jina.

  • Executor is how Jina processes Documents;

  • Flow is how Jina streamlines and scales Executors.