How to send data from Apache Kafka to Salesforce


Processing and utilizing real-time data has become crucial in today's quickly changing digital environment. Real-time data integration is essential for today's business agility, whether it's to enhance customer experiences, respond quickly to market developments, or promote automation. Apache Kafka and Salesforce have been key players in this segment.

We integrate Salesforce with Apache Kafka to combine robust data streams with cutting-edge CRM features. It takes knowledge and careful consideration to connect them seamlessly. Therefore, this tutorial strives to be a point of reference for data engineers and software developers for real-time data integration using both of these tools. We'll set up a reliable, scalable, and effective data pipeline from Apache Kafka to Salesforce through the parts that follow.

Before we dive into the integration specifics, let’s understand more about the tools we are going to integrate and what we can achieve by integrating these tools.

Understanding Apache Kafka and Salesforce

What is Apache Kafka?

Apache Kafka, at its essence, is a distributed event streaming platform. What does this mean? Picture a high-capacity conveyor belt, continuously transporting information from multiple sources to multiple destinations. That's Kafka in the realm of data. Designed by the team at LinkedIn and later open-sourced, Kafka has since taken the world of real-time data processing by storm.

Let’s understand what are the core functionalities provided by Kafka.

The core functionalities of Apache Kafka include:

  • Publish and Subscribe: Data is published to topics by producers and read from topics by subscribers, ensuring a system where data sources and recipients remain decoupled.
  • Data Storage: Beyond real-time transmission, Kafka retains large datasets for a set duration, allowing repeated access by multiple applications.
  • Stream Processing: With Kafka Streams, data can be processed and transformed in real-time during transit.
  • Fault Tolerance and Scalability: Kafka's design ensures resilience and high availability. It can expand by adding more nodes, meeting growing data demands.

Now that you understand the key features, let’s understand what Kafka can be used for.

Key use cases for Kafka include:

  • Real-Time Analytics: Enables immediate insights from current data streams.
  • Event Sourcing: Captures changes systematically, ensuring efficient system recovery post-failures.
  • Log Aggregation: Centralizes logs from varied sources, promoting uniform access.
  • Stream Processing: Powers real-time data manipulation for various applications.
  • Data System Integration: Connects effortlessly with databases, CRMs, and cloud platforms, reinforcing its centrality in data architectures.

What is Salesforce?

Salesforce started its journey as a cloud-based tool intended to revolutionize Customer Relationship Management (CRM). While its foundational goal was to empower sales teams in their efforts to manage leads and close deals, its evolution has been profound. Today, Salesforce stands not just as a CRM tool but as an expansive suite that caters to a broad spectrum of business needs, from marketing and service to analytics and app development. Positioned at the nexus of business and technology, Salesforce offers a seamless blend of functionality and adaptability.

Let’s understand what are the key products provided by the Salesforce platform:

  • Sales Cloud: Tools for managing contacts, forecasting sales, and tracking leads.
  • Service Cloud: Enhances customer support with case management and service history insights.
  • Marketing Cloud: Facilitates email, mobile, and social media campaigns.
  • Community Cloud: A platform for employees, customers, and partners to connect.
  • Analytics Cloud: A data visualization platform for interactive reports.
  • Platform & Ecosystem: Enables custom app development and offers a marketplace of pre-built apps.

Let’s understand what these products can be used for:

  • Customer 360: A unified view of each customer for personalized interactions.
  • Sales Automation: Streamlines the sales process.
  • Customer Support: Enhances customer satisfaction with timely, data-driven solutions.
  • Targeted Marketing: Personalized and data-driven marketing initiatives.
  • Business Insights: Data visualizations for better decision-making.

In essence, Salesforce is a multifaceted platform that adapts and grows with business needs, ensuring efficiency, scalability, and innovation.

Why send data from Apache Kafka to Salesforce?

Integrating Apache Kafka with Salesforce can significantly empower businesses to enhance their customer engagement and decision-making processes. By streaming real-time data from Kafka into Salesforce, organizations gain instantaneous, 360-degree insights into their customers, enabling sales teams to adapt swiftly to customer behaviors and trends. This real-time data flow not only fosters more agile and relevant sales strategies but also ensures an enriched, personalized customer experience, backed by the reliability and scalability of Kafka's robust data streaming capabilities.

Sending Data from Apache Kafka to Salesforce using Custom API Integration

Integrating Apache Kafka with Salesforce ensures that real-time data flows into the CRM seamlessly.

There are different ways of integrating Kafka with Salesforce such as:

  • Kafka Connect with Salesforce Connectors: Kafka Connect is a tool provided by Kafka to connect Kafka with various systems, including Salesforce. The Confluent Hub and other open-source communities offer pre-built Kafka connectors for Salesforce. They provide both source connector as well as sink connector (the one we are interested in to send data to Salesforce).
  • Custom API Integration: Build a custom solution where you use Kafka producers to send data to Salesforce using Salesforce’s APIs. This approach offers more flexibility but requires more development effort.
  • Middleware Solutions: There are third-party middleware tools that can act as intermediaries, handling the data transformation and flow between Kafka and Salesforce.

We are choosing a Kafka Connect integration approach in this tutorial for simplicity. Kafka Connect framework is included in Apache Kafka and facilitates building connectors that stream data between Apache Kafka and other systems.

Let’s get started with integrating Salesforce with Kafka using Kafka Connect Salesforce connector.

1. Prerequisites

Before diving into the integration process, ensure you have the following prerequisites in place. Setting up these tools correctly is essential for the successful integration of Apache Kafka with Salesforce:

Configuring Salesforce

If you don't have a Salesforce account, you can sign up for a free Developer Edition which provides access to a full set of Salesforce features, including API access.

Ensure that your Salesforce profile has API access permissions. You can find this in the Salesforce setup under Manage Users → Profiles → your profile name → Administrative Permissions.

Salesforce provides an additional layer of security using security tokens. You'll need this token combined with your password to access the API. You can reset or find your token in the Salesforce setup under Personal Settings → My Personal Information → Reset Security Token.

Make sure to familiarize yourself with the Salesforce objects (like Account, Contact) and their fields where you wish to send your data. This helps in aligning and mapping the Kafka data to Salesforce fields.

Configuring Apache Kafka

Ensure that your Kafka cluster is running and healthy. This includes the Kafka brokers, ZooKeeper instances, and any other necessary infrastructure.

Also, you should have a pre-defined topic from which data will be fetched. Data pushed to this topic will be what's sent to Salesforce. Then decide on a unique consumer group name for this integration, ensuring that offsets are properly managed.

Read Kafka documentation to understand various concepts related to Kafka. The guide from here on, assumes that you have started the Kafka broker.

Installing Confluent Hub Client (Optional)

The Confluent Hub Client provides a list of Kafka connectors and other components for Apache Kafka and Confluent Platform. It streamlines the process of adding connectors to your Kafka Connect installation using Confluent Hub Client. If you want to use that to install the connectors, install the Confluent Hub Client from here.

2. Configuring the Salesforce Connector for Kafka Connect

You can configure the Kafka Connect Salesforce connector by downloading the files directly and adding its location to your Kafka’s `


` configuration. More detailed instructions can be found here.

Alternatively if you have Confluent Hub CLI, you may use that to install the Salesforce connector by running the following command:

confluent-hub install confluentinc/kafka-connect-salesforce:<version>

Replace `


` with the desired or latest connector version. If you wish to use the connector for bulk API operations, use this Salesforce Bulk API connector instead.

In any case, make sure to read the software license agreement and terms of conditions to understand if this suits your requirements. If it doesn’t suit your needs, you might want to create your own custom Sink connector by following this guide.

3. Configuring the Salesforce Connector

Create a configuration file, `

`, with the following content:


Replace placeholders for API credentials `


` with your actual credentials and other configurations such as `


` e.g. “salesforce-messages”, `


` e.g. “lead” with your actual values.

4. Starting the Connector

Run Kafka Connect with the Salesforce sink connector configuration:

SH /path/to/ /path/to/

5. Monitor data flow

Once the connector is running, data produced to the specified Kafka topic should start flowing into Salesforce. You can monitor the logs of the Kafka Connect worker for any errors or issues. You may also use Grafana to monitor the system's health in a more organized manner.

Note, this is just a simple example. For production systems, you should also think about:

  • Data Mapping: Ensure Kafka messages fields match Salesforce object fields.
  • Security: Ensure secure data transmission using HTTPS for Salesforce and SSL for Kafka.
  • Salesforce API Limits: Remember, Salesforce has API request limits based on your license. Be mindful of this when setting up your data streams.

By following this guide, you can seamlessly funnel real-time Kafka data into Salesforce. Always test in a non-production environment first to ensure data integrity and proper integration.


Integrating Apache Kafka with Salesforce bridges real-time event streaming with leading CRM capabilities, unlocking dynamic customer insights and enabling data-driven strategies. This guide presented a method for seamless integration using Kafka Salesforce Connector, revealing the transformative power of real-time data synchronization. Embracing this integration not only supercharges Salesforce's CRM functionalities but also sets businesses on a path of continuous innovation and agility. Dive deeper, start small, and harness the full potential of your real-time data streams.

Don't want to go through the pain of direct integration? RudderStack's Apache Kafka Source integration makes it easy to send data from Apache Kafka Source to Salesforce.