Redis Unsupported Protocol Version 84

Redis is an open-source, in-memory data structure store that is commonly used as a database, cache, and message broker. It supports various data structures such as strings, lists, sets, and more. However, sometimes you may encounter an error message like "Unsupported protocol version 84" when trying to connect to Redis. In this article, we will explore the possible causes of this error and how to resolve it.

Understanding the Error

The "Unsupported protocol version 84" error usually occurs when there is a mismatch between the client and server protocol versions. This means that the client is using a protocol version that is not supported by the Redis server. To fix this issue, you need to ensure that the client and server are using compatible protocol versions.

Resolving the Error

To resolve the "Unsupported protocol version 84" error, you can try the following steps:

  1. Update the Redis client library to the latest version.
  2. Check the Redis server version and make sure it is compatible with the client library.
  3. Verify the protocol version being used by the client and server.

If the issue persists, you may need to manually specify the protocol version in your code.

Code Example

Here is a simple example of how you can specify the protocol version in a Python script using the redis-py library:

import redis

# Specify the protocol version
redis.StrictRedis(protocol_version=1)

Gantt Chart

gantt
    title Redis Protocol Version Compatibility

    section Client
    Update Client Library       :done, 2022-10-01, 1d

    section Server
    Check Redis Server Version  :done, 2022-10-02, 1d

    section Verification
    Verify Protocol Version     :done, 2022-10-03, 1d

Summary

In conclusion, the "Unsupported protocol version 84" error in Redis is typically caused by a mismatch between the client and server protocol versions. By updating the client library, checking the server version, and verifying the protocol version, you can resolve this issue and ensure compatibility between the client and server. Remember to always keep your client library and server version up to date to avoid protocol version mismatches in the future.