Tuning replicas in memory



Is it possible to tune number of replicas resident in RAM separate from the active items? If possible, even have all replicas only on disk to save more memory for the active items?



Yes, see Changing ejection thresholds in the cbecptl documentation.

Note that cbecptl is a per-node, per-bucket operation, and they are not persisted over a restart.


Are those parameters available in couchbase 2.5 also? Couldn’t find a reference to the same section.