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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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  3. ksqlDB and Kafka Streams for Confluent Platform

CONFLUENT PLATFORM

  • Overview
  • Get Started
    • What is Confluent Platform?
    • Quick Start for Confluent Platform
    • Kafka Basics
    • Apache Kafka Introduction
    • Videos, Demos, and Reading Material
      • Scripted Confluent Platform Demo
        • Overview
        • Deploy Confluent Platform Environment
        • Deploy Hybrid Confluent Platform and Cloud Environment
        • End Demo
        • Troubleshooting
      • Tutorial: Introduction to Streaming Application Development
      • Clickstream Data Analysis Pipeline Using ksqlDB
      • RBAC Example for Confluent Platform
      • Replicator Schema Translation Example for Confluent Platform
      • DevOps for Kafka with Kubernetes and GitOps
        • Overview
        • Kafka DevOps Case Studies
          • Case Study: Graduated Environments
          • Case Study: Manage Cloud Secrets
          • Case Study: Kafka Connect management with GitOps
    • Resources
  • Install and Upgrade
    • Overview
    • System Requirements
    • Install Manually
      • ZIP and TAR
      • Ubuntu and Debian
      • RHEL and CentOS
      • Docker
        • Install using Docker
        • Docker Configuration Parameters
        • Docker Image Reference
        • Docker Security
        • Docker Developer Guide
      • Configure Automatic Startup and Monitoring
    • Deploy with Ansible Playbooks
    • Deploy with Confluent for Kubernetes
    • Understand Licenses
    • Upgrade Confluent Platform
      • Overview
      • Upgrade Confluent Platform
    • Supported Versions and Interoperability
    • Installation Packages
    • Migrate from Apache Kafka
    • Migrate an Existing Kafka Deployment
    • Migrate to Confluent Server
    • Migrate from ZooKeeper to KRaft (EA)
  • Build Client Applications
    • Kafka Clients
      • Overview
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      • Client Guides
        • Python Client
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      • Client Examples
        • Overview
        • C/C++ Example
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        • 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
      • Client APIs
        • Kafka C++ Client API
        • Kafka Python Client API
        • Kafka Go Client API
        • Kafka .NET Client API
        • JavaScript Client API
        • JMS Client for Confluent Platform
          • JMS Client for Confluent Platform
          • JMS Client Development Guide
    • MQTT Proxy
      • Overview
      • Secure Communication
      • Configure
  • Confluent REST Proxy for Apache Kafka
    • Overview
    • Quick Start
    • API Reference
    • Production Deployment
      • Overview
      • Deploy REST Proxy for Confluent Server
        • Configure REST Admin APIs
        • Configure Security
      • Deploy a Standalone REST Proxy node
        • Overview
        • Configuration
        • Monitoring
        • Secure REST Proxy
    • REST Proxy Tutorial
    • Connect to Confluent Cloud
  • ksqlDB and Kafka Streams for Confluent Platform
    • Overview
    • ksqlDB
      • Overview
      • Quickstart
      • Install
      • Operate
      • Upgrade
      • Develop Applications
      • Run ksqlDB in Confluent Cloud
      • Connect Self-Managed ksqlDB to Confluent Cloud
      • Run ksqlDB in Control Center
      • Connect Standalone ksqlDB to Control Center
      • Secure ksqlDB with RBAC
      • Frequently Asked Questions
      • Troubleshoot
      • Tutorials and Examples
        • Overview
        • How-to Guides
        • Example Code
        • Materialized View
        • Streaming ETL Pipeline
        • Event-Driven Microservice
        • Read and Write External Data Stores with Connect
        • Build Clickstream Data Analysis Pipeline
    • Kafka Streams
      • Overview
      • Streams API
      • Build a Streams Application
      • Tutorial: Introduction to Streaming Application Development
      • Connect Streams to Confluent Cloud
      • Concepts
      • Architecture
      • Examples
      • Developer Guide
        • Overview
        • Write a Streams Application
        • Configure
        • Run a Streams Application
        • Test
        • Domain Specific Language
        • Name Domain Specific Language Topologies
        • Optimize Topologies
        • Processor API
        • Data Types and Serialization
        • Interactive Queries
        • Memory
        • Manage Application Topics
        • Security
        • Reset Streams Applications
      • Build Pipeline with Connect and Streams
      • Operations
        • Plan and Size
        • Monitor
      • Upgrade
      • Frequently Asked Questions
      • Javadocs
  • Connect to External Systems
    • Overview
    • Get Started
    • Kafka Connect 101
    • Connectors
    • Confluent Hub
      • Overview
      • Confluent Hub Client
      • Command Reference
        • Overview
        • confluent-hub help
        • confluent-hub install
      • Component Archive Specification
      • Contribute to Confluent Hub
    • Connect on z/OS
    • Install
    • License
    • Supported
    • Preview
    • Configure
    • Monitor
    • Logging
    • Connect to Confluent Cloud
    • Developer Guide
    • Tutorial: Moving Data In and Out of Kafka
    • Reference
      • Kafka Connect Javadocs
      • REST interface
      • Kafka Connect Worker Configuration Properties for Confluent Platform
      • Connector Configuration Properties for Confluent Platform
    • Transforms
      • 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
    • Security
      • Kafka Connect Security Basics
      • Kafka Connect and RBAC
        • Get Started With RBAC and Kafka Connect
        • Configure RBAC for a Connect Cluster
        • Configure RBAC for a Connect Worker
        • RBAC for self-managed connectors
        • Connect Secret Registry
        • Example Connect role-binding sequence
    • Design
    • Add Connectors and Software
    • Install Community Connectors
    • Upgrade
    • Troubleshoot
    • FileStream Connectors
    • FAQ
  • Manage Schema Registry and Govern Data Streams
    • Overview
    • Get Started with Schema Registry Tutorial
    • Install and Configure
      • Install
      • Configure Schema Registry
      • Configure Clients to Schema Registry
      • Deploy in Production
      • Deployment Architectures
      • Use Schema Registry to Migrate Schemas in Confluent Platform
    • Fundamentals
      • Concepts
      • Schema Evolution and Compatibility for Schema Registry on Confluent Platform
      • Schema Formats for Schema Registry on Confluent Platform
        • Serializers and Deserializers Overview
        • Avro
        • Protobuf
        • JSON Schema
      • Data Contracts
    • Manage Schemas
      • Overview
      • Use Schema Contexts in Confluent Platform
      • Link Schemas
      • Validate Schemas
      • Monitor
      • Delete Schemas
      • Integrate Schemas from Connectors
    • Security
      • Overview
      • Configure Role-Based Access Control
      • Schema Registry Security Plugin
        • Overview
        • Install
        • Schema Registry Authorization
          • Operation and Resource Support
          • Role-Based Access Control
          • ACL Authorizer
          • Topic ACL Authorizer
    • Reference
      • Overview
      • Maven Plugin
      • API
      • API Examples
    • FAQ
  • Security
    • General Security
      • Security Overview
      • Security Tutorial
      • Configure Confluent Server Authorizer
      • Cluster Registry
      • Security Compliance
      • Prefixes for Configuring Security
    • Authentication
      • Authentication Methods Overview
      • Authenticate with SASL
        • SASL using JAAS
        • SASL/GSSAPI
        • OAUTHBEARER
        • SASL/PLAIN
        • SASL/SCRAM
        • Authentication using Delegation Tokens
        • Kafka Client Authentication with LDAP
      • Encrypt and Authenticate with TLS
      • HTTP Basic Authentication
      • Adding security to a running cluster
    • Authorization
      • Authorization using Role-Based Access Control
        • RBAC Overview
        • Quick Start
        • Predefined Roles
        • Enable RBAC in a Running Cluster
        • Discover Identifiers for Clusters
        • Configuring Token Authentication
        • Confluent Metadata API Reference
        • RBAC Example for Confluent Platform
      • Configure RBAC using the REST API
      • ACLs
        • Authorization Using Centralized ACLs
        • Authorization using Access Control Lists (ACLs)
      • Group-Based Authorization Using LDAP
        • Configure Confluent Server Authorizer
        • Configuring LDAP
        • Tutorial: Group-Based Authorization Using LDAP
    • Data Protection
      • Audit Logs
        • Audit Log Concepts
        • Auditable Events
        • Configure Audit Logs using the Confluent CLI
        • Configure MDS to Manage Centralized Audit Logs
        • MDS API Audit Log Configuration
        • Configure Audit Logs using the Properties File
      • Encrypt with TLS
      • Secrets
        • Secrets Management
        • Tutorial: Secret Protection
      • Redact Confluent Logs
    • Component Security
      • Confluent Control Center Security
        • Overview
        • Configure TLS
        • Configure SASL
        • Configure HTTP Basic Authentication
        • Authorize with Kafka ACLs
        • Configure LDAP
        • Configure RBAC
        • Use SSO for Confluent Control Center
          • Single Sign-on (SSO) for Confluent Control Center
          • Configure SSO using OIDC
          • Troubleshoot
        • Manage and View RBAC Roles
          • Log in to Control Center when RBAC enabled
          • Manage RBAC roles with Control Center
          • View your RBAC roles in Control Center
      • Schema Registry Security
      • Kafka Connect Security
        • Kafka Connect Security Basics
        • Kafka Connect and RBAC
          • Get Started With RBAC and Kafka Connect
          • Configure RBAC for a Connect Cluster
          • Configure RBAC for a Connect Worker
          • RBAC for self-managed connectors
          • Connect Secret Registry
          • Example Connect role-binding sequence
      • KRaft Security
      • ksqlDB RBAC
      • REST Proxy Security
        • Deploy Secure Standalone REST Proxy in Confluent Platform
        • REST Proxy Security Plugins
      • ZooKeeper Security
    • Security Management Tools
      • Ansible Playbooks for Confluent Platform
      • Docker Security for Confluent Platform
  • Deploy Confluent Platform in a Multi-Datacenter Environment
    • Overview
    • Multi-Data Center Architectures
    • Cluster Linking
      • Overview
      • Tutorials
        • Share Data Across Topics
        • Link Hybrid Cloud and Bridge-to-Cloud Clusters
        • Migrate Data
      • Manage
        • Manage Mirror Topics
        • Configure
        • Command Reference
        • Monitor
        • Security
      • FAQ
    • Multi-Region Clusters
      • Overview
      • Tutorial: Configure Multi-Region Clusters in Confluent Platform
      • Tutorial: Move Active-Passive to Multi-Region
    • Replicate Topics Across Kafka Clusters in Confluent Platform
      • Overview
      • Example: Active-active Multi-Datacenter
      • Tutorial: Replicate Data Across Clusters
      • Tutorial: Run as an Exceutable or Connector
      • Configure
      • Verify Configuration
      • Tune
      • Monitor
      • Configure for Cross-Cluster Failover
      • Migrate from MirrorMaker to Replicator
  • Configure and Manage
    • Confluent Control Center
      • Overview
      • Manage
        • Overview
        • Customize
        • License Management
        • Monitor Production and Consumption
        • Logs
        • Auto-update and Version
        • Upgrade
        • Troubleshoot
        • Configuration Reference
        • Connect Control Center to Confluent Cloud
        • Control Center and Kafka
      • Clusters
        • Overview
        • Manage
      • Brokers
      • Topics
        • Overview
        • Create
        • Topic Metrics
        • Message Browser
        • Manage Schemas
        • Configure Topics
        • Delete Topics
      • Connect
      • ksqlDB
      • Consumers
      • Replicators
      • Alerts
        • Overview
        • Access Alerts and Alert History
        • Configure Alerts
        • Manage Triggers
        • Manage Actions
        • Configure PagerDuty
        • REST API for Alerts History
        • Examples
        • Troubleshoot
      • Security
    • Configuration Reference
      • Overview
      • Configure Brokers and Controllers
      • Configure Topics
      • Configure Consumers
      • Configure Producers
      • Configure Connect
        • Overview
        • Configure Sink Connectors
        • Configure Source Connectors
      • Configure AdminClient
      • Configure Licenses
      • Configure Streams
    • Change Configurations Without Restart
    • CLI Tools For Use With Confluent Platform
      • CLI Tools Shipped With Confluent Platform
      • Confluent CLI
      • Generate Diagnostics with the Diagnostics Bundle Tool
      • kcat (formerly kafkacat) Utility
    • Kafka Metadata Management
      • Metadata Management in Kafka
      • KRaft Overview
      • Configure KRaft
      • Configure ZooKeeper
    • Manage Clusters
      • Manage Clusters
      • Manage Self-Balancing Clusters
        • Overview
        • Quick Start
        • Tutorial: Adding and Remove Brokers
        • Configure
        • Performance and Resource Usage
      • Auto Data Balancing
        • Overview
        • Quick Start
        • Tutorial: Add and Remove Brokers
        • Configure
      • Tiered Storage
    • Confluent Platform Metadata Service (MDS)
      • Configure the Confluent Platform Metadata Service (MDS)
      • Configure Confluent Platform Components to Communicate with MDS over TLS
      • Configure mTLS Authentication and RBAC for Kafka Brokers
      • Configure Kerberos Authentication for Brokers Running MDS
      • Configure LDAP Authentication
      • Configure LDAP Group-Based Authorization for MDS
      • Configure MDS to Manage Centralized Audit Logs
      • Metadata Service Configuration Settings
      • Confluent Metadata API Reference
    • Docker Operations
      • Overview
      • Kafka Monitoring and Metrics Using JMX
      • Configure Docker Logging
      • Mounting Docker External Volumes
      • Configure a Multi-Node Environment with Docker
    • Running Kafka in Production
    • Post Kafka Deployment
  • Monitor
    • Monitor Kafka with JMX
    • Use Metrics Reporter
    • Monitor Consumer Lag
  • Confluent Health+
    • Health+ Overview
    • Enable Health+
    • Health+ Intelligent Alerts
    • Health+ Monitoring Dashboard
    • Confluent Telemetry Reporter
    • Telemetry Reporter Metrics
    • Confluent Health+ FAQ
  • Confluent CLI
  • Release Notes
    • Release Notes
    • Component Changelogs
  • APIs and Javadocs for Confluent Platform
    • API and Javadocs for Confluent Platform
    • Kafka API and Javadocs for Confluent Platform
      • Kafka Java Client APIs
      • Kafka Producer Java API
      • Kafka Consumer Java API
      • Kafka AdminClient Java API
      • Kafka Common Java API
      • Kafka Streams Java API
      • Kafka Connect Java API
    • Kafka Client APIs
      • Kafka C++ Client API
      • Kafka Python Client API
      • Kafka Go Client API
      • Kafka .NET Client API
      • JavaScript Client API
      • JMS Client for Confluent Platform
        • JMS Client for Confluent Platform
        • JMS Client Development Guide
    • Confluent APIs for Confluent Platform
      • Overview
      • Confluent REST Proxy API
        • Overview
        • Quick Start
        • API Reference
        • Production Deployment
          • Overview
          • Deploy REST Proxy for Confluent Server
            • Configure REST Admin APIs
            • Configure Security
          • Deploy a Standalone REST Proxy node
            • Overview
            • Configuration
            • Monitoring
            • Secure REST Proxy
        • REST Proxy Tutorial
        • Connect to Confluent Cloud
      • Connect REST API
      • ksqlDB REST API
      • Metadata API
      • Schema Registry API
  • Glossary

ksqlDB¶

  • Overview
  • Quickstart
  • Install
  • Operate
  • Upgrade
  • Develop Applications
  • Run ksqlDB in Confluent Cloud
  • Connect Self-Managed ksqlDB to Confluent Cloud
  • Run ksqlDB in Control Center
  • Connect Standalone ksqlDB to Control Center
  • Secure ksqlDB with RBAC
  • Frequently Asked Questions
  • Troubleshoot
  • Tutorials and Examples

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