![]() Rebalancing redistributes Ephemeral buckets, exactly as it does Couchbase buckets but without the data being persisted to disk.īy default, Auto-failover starts when a node has been inaccessible for 120 seconds.Īuto-failover can happen only up to a specified maximum number of times, prior to manual reset. Likewise, XDCR allows replication of Ephemeral bucket-data between clusters and without persistence: note however, that if an Ephemeral bucket configured to eject data when its RAM-quota is exceeded is used as a source for XDCR, not all data written to the bucket is guaranteed to be replicated by XDCR.īy means of rebalancing, the load constituted by Couchbase buckets is distributed evenly across nodes within the cluster.īuckets and nodes can be dynamically added and removed. ![]() You can configure replication at the bucket level.Īdditionally, Cross Datacenter Replication (XDCR) allows replication of Couchbase bucket-data between clusters.Įphemeral buckets can be replicated across a configurable number of servers, exactly as can Couchbase buckets but without being persisted to disk. If the host machine fails, a replica server is promoted to be the host server, providing high availability cluster operations via failover. You can set persistence-properties at the bucket level.Įphemeral buckets are not persisted to disk: they are retained in RAM only.Ĭouchbase buckets can be replicated across a configurable number of servers. This provides protection from server-restarts. ![]() CapabilityĬouchbase buckets are persisted asynchronously, from memory to disk. The following table provides further information on the principal capabilities shared by both bucket-types. Couchbase and Ephemeral buckets both provide a highly available, dynamically reconfigurable, distributed data-store which survives node failures, and allows cluster-reconfiguration to occur while service-requests continue to be handled. ![]()
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