In Airbyte, all interactions with connectors are run as jobs performed by a Worker. Each job has a corresponding worker: 1. Spec worker: Retrieves the specification of a connector (the inputs needed to run this connector). 2. Check connection worker: Verifies that the inputs to a connector are valid and can be used to run a sync. 3. Discovery worker: Retrieves the schema of the source underlying a connector. 4. Sync worker: Used to sync data between a source and destination. Thus, there are generally 4 types of workers in Airbyte. Note: Workers here refers to Airbyte workers. Temporal, which Airbyte uses under the hood for scheduling, has its own worker concept. This distinction is important. Source: [Workers & Jobs](https://docs.airbyte.com/understanding-airbyte/jobs)

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The values you set for

MAX_SPEC_WORKERS

,

MAX_CHECK_WORKERS

,

MAX_DISCOVERY_WORKERS

, and

MAX_SYNC_WORKERS

represent the maximum number of workers allowed to run in parallel for each specific type of job, not for sources or destinations. For example, if you set

MAX_SYNC_WORKERS=2

, it means that up to 2 sync jobs can run in parallel, regardless of the sources or destinations involved. Here's the configuration again for reference:

MAX_SPEC_WORKERS=2 MAX_CHECK_WORKERS=2 MAX_DISCOVERY_WORKERS=2 MAX_SYNC_WORKERS=2

For more information on configuring workers, refer to the [Configuring Workers section](https://docs.airbyte.com/understanding-airbyte/jobs#configuring-workers) in the Airbyte documentation.

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@Yusuf Mirkar That's a great question, but unfortunately I am only capable of responding to a maximum of five questions per thread. Don't hesitate to create a new thread for any further questions you have though. I'm here to help!