Access Redis Data in Mule Applications Using the CData JDBC Driver

The CData JDBC Driver for Redis connects Redis data to Mule applications enabling read , write, update, and delete functionality with familiar SQL queries. The JDBC Driver allows users to easily create Mule applications to backup, transform, report, and analyze Redis data.

This article demonstrates how to use the CData JDBC Driver for Redis inside of a Mule project to create a Web interface for Redis data. The application created allows you to request Redis data using an HTTP request and have the results returned as JSON. The exact same procedure outlined below can be used with any CData JDBC Driver to create a Web interface for the hundreds of available data sources.

1. Create a new Mule Project in Anypoint Studio.
2. Add an HTTP Connector to the Message Flow.
3. Configure the address for the HTTP Connector. 👁 Add and Configure the HTTP Connector
   
4. Add a Database Select Connector to the same flow, after the HTTP Connector.
5. Create a new Connection (or edit an existing one) and configure the properties.
   • Set Connection to "Generic Connection"
   • Select the CData JDBC Driver JAR file in the Required Libraries section (e.g. cdata.jdbc.redis.jar). 👁 Adding the JAR file (Salesforce is shown).
     
   • Set the URL to the connection string for Redis

     Set the following connection properties to connect to a Redis instance:

     • : Set this to the name or address of the server your Redis instance is running on. You can specify the port in .
     • : Set this to the password used to authenticate with a password-protected Redis instance , using the Redis AUTH command.

     Set to negotiate SSL/TLS encryption when you connect.

     Built-in Connection String Designer

     For assistance in constructing the JDBC URL, use the connection string designer built into the Redis JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.

     		java -jar cdata.jdbc.redis.jar
     		

     Fill in the connection properties and copy the connection string to the clipboard.

   • Set the Driver class name to cdata.jdbc.redis.RedisDriver. 👁 A configured Database Connection (Salesforce is shown).
     
   • Click Test Connection.
6. Set the SQL Query Text to a SQL query to request Redis data. For example:

   SELECT City, CompanyName FROM Customers

   👁 Configure the Select object (Salesforce is Shown)
   
7. Add a Transform Message Component to the flow.
8. Set the Output script to the following to convert the payload to JSON:

   %dw 2.0
   output application/json
   ---
   payload
    

   👁 Add the Transform Message Component to the Flow
   
9. To view your Redis data, navigate to the address you configured for the HTTP Connector (localhost:8081 by default): http://localhost:8081. The Redis data is available as JSON in your Web browser and any other tools capable of consuming JSON endpoints.

At this point, you have a simple Web interface for working with Redis data (as JSON data) in custom apps and a wide variety of BI, reporting, and ETL tools. Download a free, 30 day trial of the JDBC Driver for Redis and see the CData difference in your Mule Applications today.