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Service Broker in SQL Server

Introduction

In this article, we will learn about Service Broker in SQL Server. The SQL Server Service Broker helps developers build scalable and secure database applications.

Service Broker in SQL Server

The Service Broker is part of the database engine; it provides a message base communication platform used in independent application components to perform as a functioning whole. The Service Broker also supports an asynchronous programming model for single instances and distributed applications.

Service Broker also provides queuing and reliable messaging for SQL Server. Service Broker is used for applications that use a single SQL Server instance and distribute work across multiple instances.

How to Enable Service Broker in SQL Server?

Use the following to enable Service Broker.

-- Enable Service Broker:
ALTER DATABASE [Database Name] SET ENABLE_BROKER;

-- Disable Service Broker:
ALTER DATABASE [Database Name] SET DISABLE_BROKER;

-- To know Service Broker is enabled status for a particular database, run following Query
SELECT is_broker_enabled FROM sys.databases WHERE name = 'Database name';

-- is_broker_enabled will be 1 if Service Broker is enabled for the given database, otherwise it will be 0.

Advantages of Service Broker

The Advantages of the Service Broker are:

  • Database integration enhances performance; database administration is also straightforward when data, messages, and application logic are within the database.

  • The Service Broker automatically handles message orders, unique delivery, and conversation identification.

  • The Service Broker provides a loose coupling between the source (initiating) application and the target application.

  • The Service Broker associates related conversations in a conversation group. The Service Broker automatically locks all messages in the same conversation group so that these messages can be received and processed by one application instance.

  • The Service Broker also supports activation. Activation allows an application to dynamically scale itself to match the volume of messages that arrive in the queue.

When to use a Service Broker in SQL Server?

The following are the possible uses of the Service Broker:

  • Asynchronous Triggers

  • Data Collection

  • Reliable Query Processing

  • Data Consolidation for Client Applications

  • Distributed Server-Side Processing for Client Applications

  • Large-Scale Batch Processing

Conclusion

Service Broker is beneficial for asynchronous integration, providing secure, scalable, and reliable messaging. It is also useful when multiple sources can initiate the same data integration.


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