The Short Answer

To fix the “Distribution” error in cache, which manifests as poor performance, advanced users can try toggling the distribution setting to “Hotspot” mode, reducing sync time from 15 minutes to 30 seconds. This can be done by navigating to Settings > Cache Configuration > Distribution, and selecting the “Hotspot” option.

Why This Error Happens

• Reason 1: The most common cause of the “Distribution” error is an incorrect cache configuration, where the distribution setting is not optimized for the specific use case, resulting in inefficient data synchronization and poor performance.
• Reason 2: An edge case cause of this error is when the cache is handling a large volume of concurrent requests, exceeding the default connection limit, and causing the distribution mechanism to fail, leading to performance degradation.
• Impact: The “Distribution” error can significantly impact performance, causing delays, and timeouts, ultimately affecting the overall user experience and system reliability.

Step-by-Step Solutions

Method 1: The Quick Fix

1. Go to Settings > Cache Configuration > Distribution
2. Toggle the Distribution Mode to “Hotspot”
3. Refresh the page to apply the changes.

Method 2: The Command Line/Advanced Fix

For advanced users, the distribution setting can be modified using the command line interface. Run the following command to set the distribution mode to “Hotspot”:

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cache-cli config set distribution.mode hotspot

This will update the cache configuration to use the “Hotspot” distribution mode, optimizing performance and reducing sync time.

Prevention: How to Stop This Coming Back

To prevent the “Distribution” error from occurring in the future, follow these best practices:

• Configure the cache to use the optimal distribution mode for your specific use case.
• Monitor cache performance regularly, using tools such as cache-cli or external monitoring software.
• Adjust the connection limit and other settings as needed to handle concurrent requests and large volumes of data.

If You Can’t Fix It…

[!WARNING] If cache continues to crash or exhibit poor performance despite attempting the above fixes, consider switching to Redis, which handles Hotspot natively without these errors and provides a more robust caching solution.

FAQ

Q: Will I lose data fixing this? A: The fixes outlined above do not involve deleting or modifying existing cache data, so there is no risk of data loss. However, if you are using a custom cache configuration, it is recommended to back up your configuration before making changes.

Q: Is this a bug in cache? A: The “Distribution” error is not a bug in cache, but rather a configuration issue that can be resolved by adjusting the distribution setting. This issue has been addressed in recent versions of cache, and users are recommended to update to the latest version to take advantage of improved performance and stability.

📚 Continue Learning

Check out our guides on cache and Distribution.