How to clear insufficient memory in a Couchbase database?

When there is insufficient memory in the Couchbase database, it can be cleaned up in several ways:

1. Increase memory: If conditions allow, increasing the server’s memory can resolve the issue of insufficient memory.
2. Clearing cache: Couchbase database stores some data in memory. If there is insufficient memory, you can try clearing the cache to free up memory. You can clear the cache by running the following command:

couchbase-cli bucket-flush --cluster=127.0.0.1:8091 --bucket=BUCKET_NAME

BUCKET_NAME is the name of the bucket that you want to clear the cache for.

1. Remove outdated data: If there is outdated data in your database, you can delete it by executing the following command.

cbepctl localhost:11210 set flush_param exp_pager_stime 10

“10 represents a duration of 10 seconds, which you can adjust as needed.”

1. Optimize the data model: If there is redundant or unnecessary data in the database, consider optimizing the data model by deleting redundant data or using more memory-saving data structures.
2. Restart service: If the above methods fail to resolve the issue of insufficient memory, you can try restarting the Couchbase service. After the restart, the database will reload data and free up some memory.

Please make sure to back up important data before performing the above operation to avoid losing any data.