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      Confluent Cloud

      Fully-managed data streaming platform with a cloud-native Kafka engine (KORA) for elastic scaling, with enterprise security, stream processing, governance.
      Confluent Platform

      An on-premises enterprise-grade distribution of Apache Kafka with enterprise security, stream processing, governance.
  • Connect
      Managed

      Use fully-managed connectors with Confluent Cloud to connect to data sources and sinks.
      Self-Managed

      Use self-managed connectors with Confluent Platform to connect to data sources and sinks.
  • Govern
      Managed

      Use fully-managed Schema Registry and Stream Governance with Confluent Cloud.
      Self-Managed

      Use self-managed Schema Registry and Stream Governance with Confluent Platform.
  • Process
      Managed

      Use Flink on Confluent Cloud to run complex, stateful, low-latency streaming applications.
      Self-Managed

      Use Flink on Confluent Platform to run complex, stateful, low-latency streaming applications.
Stream
Confluent Cloud

Fully-managed data streaming platform with a cloud-native Kafka engine (KORA) for elastic scaling, with enterprise security, stream processing, governance.
Confluent Platform

An on-premises enterprise-grade distribution of Apache Kafka with enterprise security, stream processing, governance.
Connect
Managed

Use fully-managed connectors with Confluent Cloud to connect to data sources and sinks.
Self-Managed

Use self-managed connectors with Confluent Platform to connect to data sources and sinks.
Govern
Managed

Use fully-managed Schema Registry and Stream Governance with Confluent Cloud.
Self-Managed

Use self-managed Schema Registry and Stream Governance with Confluent Platform.
Process
Managed

Use Flink on Confluent Cloud to run complex, stateful, low-latency streaming applications.
Self-Managed

Use Flink on Confluent Platform to run complex, stateful, low-latency streaming applications.
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  1. Home
  2. Cloud
  3. Build Kafka Client Applications on Confluent Cloud
  4. Kafka Client Examples for Confluent Cloud

CLOUD

  • Overview
  • Get Started
    • Overview
    • Quick Start
    • REST API Quick Start
    • Manage Schemas
    • Deploy Free Clusters
    • Tutorials and Examples
      • Overview
      • Example: Use Replicator to Copy Kafka Data to Cloud
      • Example: Create Fully-Managed Services
      • Example: Build an ETL Pipeline
  • Manage Kafka Clusters
    • Overview
    • Cluster Types
    • Manage Configuration Settings
    • Cloud Providers and Regions
    • Resilience
    • Copy Data with Cluster Linking
      • Overview
      • Quick Start
      • Use Cases and Tutorials
        • Share Data Across Clusters, Regions, and Clouds
        • Disaster Recovery and Failover
        • Create Hybrid Cloud and Bridge-to-Cloud Deployments
        • Use Tiered Separation of Critical Workloads
        • Migrate Data
        • Manage Audit Logs
      • Configure, Manage, and Monitor
        • Configure and Manage Cluster Links
        • Manage Mirror Topics
        • Manage Private Networking
        • Manage Security
        • Monitor Metrics
      • FAQ
      • Troubleshooting
    • Copy Data with Replicator
      • Quick Start
      • Use Replicator to Migrate Topics
    • Resize a Dedicated Cluster
    • Multi-Tenancy and Client Quotas for Dedicated Clusters
      • Overview
      • Quick Start
    • Create Cluster Using Terraform
    • Create Cluster Using Pulumi
    • Connect Confluent Platform and Cloud Environments
      • Overview
      • Connect Self-Managed Control Center to Cloud
      • Connect Self-Managed Clients to Cloud
      • Connect Self-Managed Connect to Cloud
      • Connect Self-Managed REST Proxy to Cloud
      • Connect Self-Managed ksqlDB to Cloud
      • Connect Self-Managed MQTT to Cloud
      • Connect Self-Managed Schema Registry to Cloud
      • Connect Self-Managed Streams to Cloud
      • Example: Autogenerate Self-Managed Component Configs for Cloud
  • Build Client Applications
    • Overview
    • Connect with Confluent (Partner Integration)
    • Client Quick Start
    • Configuration Settings
    • Consumer
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    • Language Guides
      • Python Client
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      • Go Client
      • Java Client
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      • JMS Client
    • Examples
      • Overview
      • C/C++ Example
      • .NET Example
      • Go Example
      • Spring Boot Example
      • Java Example
      • KafkaProducer Example
      • Python Example
      • REST Example
      • Node.js Example
      • Clojure Example
      • Groovy Example
      • Kafka Connect Datagen Example
      • kafkacat Example
      • Kotlin Example
      • Ruby Example
      • Rust Example
      • Scala Example
    • Architecture
    • Test
    • Monitor
    • Reset Offsets
    • Optimize and Tune
      • Overview
      • Configuration Settings
      • Throughput
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    • VS Code
  • Manage Security
    • Overview
    • Manage Authentication
      • Overview
      • Manage User Identities
        • Overview
        • Manage User Accounts
          • Overview
          • Authentication Security Protections
          • Manage Local User Accounts
          • Manage SSO User Accounts
        • Manage User Identity Providers
          • Overview
          • Use Single Sign-On (SSO)
          • Manage SAML Single Sign-On (SSO)
          • Manage Azure Marketplace SSO
          • Just-in-time User Provisioning
          • Group Mapping
            • Overview
            • Enable Group Mapping
            • Manage Group Mappings
            • Troubleshooting
            • Best Practices
          • Manage SSO Access to Confluent Support Portal
          • Manage SSO provider
          • Troubleshoot SSO
      • Manage Workload Identities
        • Overview
        • Manage Service Accounts and API Keys
          • Overview
          • Manage Service Accounts
          • Manage API Keys
            • Overview
            • Manage API keys
            • Best Practices
            • Troubleshoot
        • Manage OAuth/OIDC Identity Providers
          • Overview
          • Add an OIDC identity provider
          • Use identity pools and filters
          • Manage identity provider configurations
          • Manage the JWKS URI
          • Configure OAuth clients
          • Access Kafka REST APIs
          • Use Confluent STS tokens with REST APIs
          • Best Practices
        • Manage mTLS Identity Providers
          • Overview
          • Configure mTLS
          • Manage Certificate Authorities
          • Manage Identity Pools
          • Create CEL Filters for mTLS
          • Create JSON payloads for mTLS
          • Manage Certificate Revocation
          • Troubleshoot mTLS Issues
    • Control Access
      • Overview
      • Resource Hierarchy
        • Overview
        • Organizations
          • Overview
          • Manage Multiple Organizations
        • Environments
        • Confluent Resource Names (CRNs)
      • Manage Role-Based Access Control
        • Overview
        • Predefined RBAC Roles
        • Manage Role Bindings
        • Use ACLs with RBAC
      • Manage IP Filtering
        • Overview
        • Manage IP Groups
        • Manage IP Filters
        • Best Practices
      • Manage Access Control Lists
      • Use the Confluent CLI with multiple credentials on Confluent Cloud
    • Encrypt and Protect Data
      • Overview
      • Encrypt Data at Rest Using Self-managed Encryption Keys
        • Overview
        • Use Self-managed Encryption Keys on AWS
        • Use Self-managed Encryption Keys on Azure
        • Use Self-managed Encryption Keys on Google Cloud
        • Use Confluent CLI for Self-managed Encryption Keys
        • Use BYOK API for Self-managed Encryption Keys
        • Revoke Access to Data at Rest
        • Best Practices
      • Protect Sensitive Data Using Client-side Field Level Encryption
        • Overview
        • Manage CSFLE using Confluent Cloud Console
        • Use Client-side Field Level Encryption
        • Configuration Settings
        • Manage Encryption Keys
        • Quick Start
        • Implement a Custom KMS Driver
        • Code examples
        • Troubleshoot
        • FAQ
    • Monitor Activity
      • Concepts
      • Understand Audit Log Records
      • Audit Log Event Schema
      • Auditable Event Methods
        • Connector
        • Custom connector plugin
        • Flink
        • Flink Authentication and Authorization
        • IP Filter Authorization
        • Kafka Cluster Authentication and Authorization
        • Kafka Cluster Management
        • ksqlDB Cluster Authentication and Authorization
        • Networking
        • Notifications Service
        • OAuth/OIDC Identity Provider and Identity Pool
        • Organization
        • Pipeline (Stream Designer)
        • Role-based Access Control (RBAC)
        • Schema Registry Authentication and Authorization
        • Schema Registry Management and Operations
      • Access and Consume Audit Log Records
      • Retain Audit Logs
      • Best Practices
      • Troubleshoot
    • Access Management Tutorial
    • Complete Environment Tutorial
  • Manage Topics
    • Overview
    • Configuration Reference
    • Message Browser
    • Share Streams
      • Overview
      • Provide Stream Shares
      • Consume Stream Shares
  • Govern Data Streams
    • Overview
    • Stream Governance
      • Packages, Features, and Limits
      • Data Portal
      • Track Data with Stream Lineage
      • Manage Stream Catalog
        • Stream Catalog User Guide
        • REST API Catalog Usage and Examples Guide
        • GraphQL API Catalog Usage and Examples Guide
    • Manage Schemas
      • Overview
      • Manage Schemas
      • Delete Schemas and Manage Storage
      • Use Broker-Side Schema ID Validation
      • Schema Linking
      • Schema Registry Tutorial
    • Fundamentals
      • Key Concepts
      • Schema Evolution and Compatibility
      • Schema Formats
        • Serializers and Deserializers Overview
        • Avro
        • Protobuf
        • JSON Schema
      • Data Contracts
      • Security Considerations
      • Enable Private Networking
        • Enable Private Networking with Schema Registry PrivateLink
        • Enable Private Networking for Schema Registry with a Public Endpoint
    • Reference
      • Configure Clients to Schema Registry
      • Schema Registry REST API Usage Examples
      • Use AsyncAPI to Describe Topics and Schemas
      • Maven Plugin
    • FAQ
  • Connect to External Systems
    • Overview
    • Install Connectors
      • ActiveMQ Source
      • AlloyDB Sink
      • Amazon CloudWatch Logs Source
      • Amazon CloudWatch Metrics Sink
      • Amazon DynamoDB Sink
      • Amazon DynamoDB CDC Source
      • Amazon Kinesis Source
      • Amazon Redshift Sink
      • Amazon S3 Sink
        • Configure and Launch
        • Configure with AWS Egress PrivateLink Endpoints
      • Amazon S3 Source
      • Amazon SQS Source
      • AWS Lambda Sink
      • Azure Blob Storage Sink
        • Configure and Launch
        • Configure with Azure Egress Private Link Endpoints
      • Azure Blob Storage Source
      • Azure Cognitive Search Sink
      • Azure Cosmos DB Sink
      • Azure Cosmos DB Source
      • Azure Data Lake Storage Gen2 Sink
      • Azure Event Hubs Source
      • Azure Functions Sink
      • Azure Log Analytics Sink
      • Azure Service Bus Source
      • Azure Synapse Analytics Sink
      • Databricks Delta Lake Sink
        • Set up Databricks Delta Lake (AWS) Sink Connector for Confluent Cloud
        • Configure and launch the connector
      • Datadog Metrics Sink
      • Datagen Source (development and testing)
      • Elasticsearch Service Sink
      • GitHub Source
      • Google BigQuery Sink (Legacy)
      • Google BigQuery Sink V2
      • Google Cloud BigTable Sink
      • Google Cloud Dataproc Sink
      • Google Cloud Functions Gen 2 Sink
      • Google Cloud Functions Sink (Legacy)
      • Google Cloud Pub/Sub Source
      • Google Cloud Spanner Sink
      • Google Cloud Storage Sink
      • Google Cloud Storage Source
      • HTTP Sink
      • HTTP Sink V2
      • HTTP Source
      • HTTP Source V2
      • IBM MQ Source
      • InfluxDB 2 Sink
      • InfluxDB 2 Source
      • Jira Source
      • Microsoft SQL Server CDC Source (Debezium) [Legacy]
      • Microsoft SQL Server CDC Source V2 (Debezium)
        • Configure and launch the connector
        • Backward incompatibility considerations
      • Microsoft SQL Server Sink (JDBC)
      • Microsoft SQL Server Source (JDBC)
      • MongoDB Atlas Sink
        • Configure and Launch
        • Configure with AWS Egress PrivateLink Endpoints
        • Configure with Azure Egress Private Link Endpoints
      • MongoDB Atlas Source
      • MQTT Sink
      • MQTT Source
      • MySQL CDC Source (Debezium) [Legacy]
      • MySQL CDC Source V2 (Debezium)
        • Configure and Launch the connector
        • Backward Incompatible Changes
      • MySQL Sink (JDBC)
      • MySQL Source (JDBC)
      • New Relic Metrics Sink
      • OpenSearch Sink
      • Oracle CDC Source
        • Overview
        • Configure and Launch the connector
        • Horizontal Scaling
        • Oracle Database Prerequisites
        • SMT Examples
        • DDL Changes
        • Troubleshooting
      • Oracle Database Sink (JDBC)
      • Oracle Database Source (JDBC)
      • PagerDuty Sink
      • Pinecone Sink
      • PostgreSQL CDC Source (Debezium) [Legacy]
      • PostgreSQL CDC Source V2 (Debezium)
        • Configure and Launch the connector
        • Backward Incompatible Changes
      • PostgreSQL Sink (JDBC)
      • PostgreSQL Source (JDBC)
      • RabbitMQ Sink
      • RabbitMQ Source
      • Redis Sink
      • Salesforce Bulk API 2.0 Sink
      • Salesforce Bulk API 2.0 Source
      • Salesforce Bulk API Source
      • Salesforce CDC Source
      • Salesforce Platform Event Sink
      • Salesforce Platform Event Source
      • Salesforce PushTopic Source
      • Salesforce SObject Sink
      • ServiceNow Sink
      • ServiceNow Source
      • SFTP Sink
      • SFTP Source
      • Snowflake Sink
        • Configure and Launch
        • Configure with AWS Egress PrivateLink Endpoints
        • Configure with Azure Egress Private Link Endpoints
      • Solace Sink
      • Splunk Sink
      • Zendesk Source
    • Confluent Hub
      • Overview
      • Component Archive Specification
      • Contribute
    • Install Custom Plugins and Custom Connectors
      • Overview
      • Quick Start
      • Manage Custom Connectors
      • Limitations and Support
      • API and CLI
    • Manage Provider Integration
      • Quick Start
      • Provider Integration APIs
    • Manage CSFLE
    • Networking and DNS
      • Overview
      • AWS Egress PrivateLink Endpoints for First-Party Services
      • AWS Egress PrivateLink Endpoints for RDS & Self-Managed Services
      • Azure Egress Private Link Endpoints for First-Party Services
      • Azure Egress Private Link Endpoints for Self-Managed Services
    • Connect API Usage
    • Manage Public Egress IP Addresses
    • Sample Connector Output
    • Configure Single Message Transforms
    • View Connector Events
    • Manage Service Accounts
    • Configure RBAC
    • View Errors in the Dead Letter Queue
    • Connector Limits
    • Manage Offsets
    • Transforms List
      • Overview
      • Cast
      • Drop
      • DropHeaders
      • EventRouter
      • ExtractField
      • ExtractTopic
      • Filter (Kafka)
      • Filter (Confluent)
      • Flatten
      • GzipDecompress
      • HeaderFrom
      • HoistField
      • InsertField
      • InsertHeader
      • MaskField
      • MessageTimestampRouter
      • RegexRouter
      • ReplaceField (Kafka)
      • ReplaceField (Confluent)
      • SetSchemaMetadata
      • TimestampConverter
      • TimestampRouter
      • TombstoneHandler
      • TopicRegexRouter
      • ValueToKey
  • Process Data with Flink
    • Overview
    • Get Started
      • Overview
      • Quick Start with Cloud Console
      • Quick Start with SQL Shell in Confluent CLI
      • Quick Start with Java Table API
      • Quick Start with Python Table API
    • Concepts
      • Overview
      • Compute Pools
      • Autopilot
      • Statements
      • Determinism
      • Tables and Topics
      • Time and Watermarks
      • User-defined Functions
      • Delivery Guarantees and Latency
      • Schema and Statement Evolution
      • Comparison with OSS Flink
      • Billing
    • How-To Guides
      • Overview
      • Aggregate a Stream in a Tumbling Window
      • Convert the Serialization Format of a Topic
      • Compare Current and Previous Values in a Stream
      • Mask Fields in a Table
      • Deduplicate Rows in a Table
      • Scan and Summarize Tables
      • Handle Multiple Event Types
      • Create a UDF
      • Process Schemaless Events
      • Combine Streams and Track Most Recent Records
    • Operate and Deploy
      • Overview
      • Create a Compute Pool
      • Monitor and Manage Statements
      • Grant Role-Based Access
      • Deploy a Statement with CI/CD
      • Generate a Flink API Key
      • REST API
      • Move SQL Statements to Production
      • Enable Private Networking
    • Flink Reference
      • Overview
      • SQL Syntax
      • DDL Statements
        • Statements Overview
        • ALTER MODEL
        • ALTER TABLE
        • ALTER VIEW
        • CREATE FUNCTION
        • CREATE MODEL
        • CREATE TABLE
        • CREATE VIEW
        • DESCRIBE
        • DROP MODEL
        • DROP TABLE
        • DROP VIEW
        • HINTS
        • EXPLAIN
        • RESET
        • SET
        • SHOW
        • USE CATALOG
        • USE database_name
      • DML Statements
        • Queries Overview
        • Deduplication
        • Group Aggregation
        • INSERT INTO FROM SELECT
        • INSERT VALUES
        • Joins
        • LIMIT
        • Pattern Recognition
        • ORDER BY
        • OVER Aggregation
        • SELECT
        • Set Logic
        • Statement Set
        • Top-N
        • Window Aggregation
        • Window Deduplication
        • Window Join
        • Window Top-N
        • Window Table-Valued Function
        • WITH
      • Functions
        • Flink SQL Functions
        • Aggregate
        • Collections
        • Comparison
        • Conditional
        • Datetime
        • Hashing
        • JSON
        • AI Model Inference
        • Numeric
        • String
        • Table API
      • Data Types
      • Data Type Mappings
      • Time Zone
      • Keywords
      • Information Schema
      • Example Streams
      • Supported Cloud Regions
      • SQL Examples
      • Table API
      • CLI Reference
    • Get Help
  • Build AI with Flink
    • Overview
    • Run an AI Model
  • Process Data with ksqlDB
    • Create Stream Processing Apps with ksqlDB
    • Quick Start
    • Enable ksqlDB Integration with Schema Registry
    • ksqlDB Cluster API Quick Start
    • Monitor ksqlDB
    • Manage ksqlDB by using the CLI
    • Manage Connectors With ksqlDB
    • Develop ksqlDB Applications
    • Pull Queries
    • Grant Role-Based Access
    • Migrate ksqlDB Applications on Confluent Cloud
    • Build Data Pipelines with Stream Designer
      • Stream Designer for Confluent Cloud
      • Quick Start for Stream Designer
      • Create a Join Pipeline
      • Create an Aggregation Pipeline
      • Import a Recipe Into a Pipeline
      • Import and Export a Pipeline
      • Edit and Update a Pipeline
      • Role-Based Access Control for Pipelines
      • Troubleshoot a Pipeline in Stream Designer
      • Manage Pipelines With the CLI
      • Manage Pipelines With the REST API
      • Manage Pipeline Secrets
  • Manage Networking
    • Overview
    • Networking on AWS
      • Overview
      • Public Networking on AWS
      • Confluent Cloud Network on AWS
      • PrivateLink on AWS
        • Overview
        • Inbound PrivateLink for Dedicated Clusters
        • Inbound PrivateLink for Serverless Products
        • Outbound PrivateLink for Dedicated Clusters
        • Outbound PrivateLink for Serverless Products
      • VPC Peering on AWS
      • Transit Gateway on AWS
    • Networking on Azure
      • Overview
      • Public Networking on Azure
      • Confluent Cloud Network on Azure
      • Private Link on Azure
        • Overview
        • Inbound Private Link for Dedicated Clusters
        • Inbound Private Link for Serverless Products
        • Outbound Private Link for Dedicated Clusters
        • Outbound Private Link for Serverless Products
      • VNet Peering on Azure
    • Networking on Google Cloud
      • Overview
      • Public Networking on Google Cloud
      • Confluent Cloud Network on Google Cloud
      • Inbound Private Service Connect on Google Cloud
      • VPC Peering on Google Cloud
    • Connectivity for Confluent Resources
      • Overview
      • Public Egress IP Address for Connectors and Cluster Linking
      • Cluster Linking using AWS PrivateLink
      • Follower Fetching using AWS VPC Peering
    • Use Confluent Cloud with Private Networking
    • Test Connectivity
  • Log and Monitor
    • Metrics
    • Manage Notifications
    • Monitor Consumer Lag
    • Monitor Dedicated Clusters
      • Monitor Cluster Load
      • Manage Performance and Expansion
      • Track Usage by Team
    • Observability for Kafka Clients to Confluent Cloud
  • Manage Billing
    • Overview
    • Marketplace Consumption Metrics
    • Use AWS Pay As You Go
    • Use AWS Commits
    • Use Azure Pay As You Go
    • Use Azure Commits
    • Use Google Cloud Pay As You Go
    • Use Google Cloud Commits
    • Marketplace Organization Suspension and Deactivation
  • Manage Service Quotas
    • Overview
    • Service Quotas
    • View Service Quotas using Confluent CLI
    • Service Quotas API
  • APIs
    • Confluent Cloud APIs
    • Kafka Admin and Produce REST APIs
    • Connect API
    • Client APIs
      • C++ Client API
      • Python Client API
      • Go Client API
      • .NET Client API
    • Provider Integration API
    • Flink REST API
    • Metrics API
    • Stream Catalog REST API Usage
    • GraphQL API
    • Service Quotas API
    • Stream Designer Pipelines API
  • Confluent CLI
  • Release Notes & FAQ
    • Release Notes
    • FAQ
    • Upgrade Policy
    • Compliance
    • Generate a HAR file for Troubleshooting
    • Confluent AI Assistant
  • Support
  • Glossary

Kafka Client Examples for Confluent Cloud¶

Learn how to build Apache Kafka® clients apps using your favorite language.

  • Create an Apache Kafka Client App for C/C++
  • Create an Apache Kafka Client App for .NET
  • Create an Apache Kafka Client App for Go
  • Create an Apache Kafka Client App for Spring Boot
  • Create an Apache Kafka Client App for Java
  • Create an Apache Kafka Client App for KafkaProducer
  • Create an Apache Kafka Client App for Python
  • Create an Apache Kafka Client App for REST
  • Create an Apache Kafka Client App for Node.js
  • Create a Kafka Client App for Clojure for Use With Confluent Cloud
  • Create a Kafka Client App for Groovy for Use With Confluent Cloud
  • Create a Kafka Client App for Kafka Connect Datagen for Use With Confluent Cloud
  • Create a Kafka Client App for kcat for Use With Confluent Cloud
  • Create a Kafka Client App for Kotlin for Use With Confluent Cloud
  • Create a Kafka Client App for Ruby for Use With Confluent Cloud
  • Create a Kafka Client App for Rust for Use With Confluent Cloud
  • Create a Kafka Client App for Scala for Use With Confluent Cloud

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