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Posted 06/05/2019

Tableau Server Components

Tableau Server Components

The work of Tableau Server is handled with the following four server processes:

Application Server: Application Server processes (wgserver.exe) handle content browsing, server administration and permissions for the Tableau Server web and mobile interfaces.

When a user opens a view in a client device, that user starts a session (workgroup_session_id) on Tableau Server. The default timeout for this session is easy configuration by an administrator. You can run two or more application server processes to meet your scalability and availability needs. and tableau training

VizQL Server: Once the user is authenticated via the application server, the user can open a view. The client sends a request to the VizQL process (vizqlserver.exe).

The VizQL process then sends queries directly to the data source, returning a result set that is rendered as images and presented to the user. In many cases, Tableau Server leverages client-side rendering and caching to reduce the load on the server.

Also, each VizQL Server has its own cache that can be shared across multiple users in a secure way. You can run two or more VizQL Server process to meet your scalability and availability needs.

Data Server: Unlike traditional approaches to metadata management, the Tableau Data Server is a key component that allows IT, administrators, to enable monitoring, metadata management and control for IT while enabling self-service analytics for business users.

 It lets you centrally manage and store Tableau data sources and provides end users with secure access to trusted data in a self-service analytics deployment.

You can centrally manage metadata, such as connections, drivers, and data source filters for data access. You can assign specific permissions to the data source in a way that allows IT to manage permissions to the data sources based on specific AD groups.

In a managed environment, users that are closest to their data also have the flexibility to define and publish definitions, calculations, and groups.

These can be shared and used by everyone in the organization or users using  Tableau Desktop to create and provide their own calculations, definitions, and groups.

The published data source can be based on:

• A Tableau Data Engine extract

• A live connection (cubes are not supported as live connections)

Read more about the Data Server in the section Data Strategy below.

Backgrounder: The backgrounder refreshes scheduled extracts, delivers notifications and manages other background tasks. The backgrounder is designed to consume as much CPU as is available so as to finish the background activity as quickly as possible. Read more tableau certification

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