XINFO command in Redis is used to fetch metadata about a stream or consumer groups related to a stream. In the context of Node.js, you may want to use this when working with streams in Redis to debug performance issues, check state of consumer groups, or validate data integrity.
In this code snippet, we're using the
xinfo method to get metadata about a stream named
mystream. The callback function then logs this information to the console.
In this example, we're retrieving information about all consumer groups associated with a stream named
xinfocommand, it will be passed as the first argument to your callback.
xinfoin an asynchronous function for better readability and error handling.
xinfo, which can lead to unexpected null results.
xinforeturns an array of alternating keys and values, so you need to correctly parse it.
Q: What version of Redis do I need to use the XINFO command?
A: The XINFO command is available since Redis 5.0.
Q: What does the 'GROUPS' option do in the XINFO command?
A: The 'GROUPS' option is used to retrieve information about all consumer groups associated with a specific stream.