CODEWITHSUNDEEP
couchbase
vipw
vipw

Reputation: 7645

Heterogeneous Couchbase Cluster

I would like to run a couchbase cluster on a hardware cluster that's not uniform. Some of the machines have 1 CPU core, while the others have 16 cores.

Is there a way to configure the bucket size or request frequency so the larger servers can receive a larger percentage of the load?

What I'm looking for is something similar to the weighting in ketama, but for Couchbase.

Upvotes: 1

Views: 226

Answers (2)

Mickaël Le Baillif
Mickaël Le Baillif

Reputation: 2157

You stated in a previous answer that:

Usually 1 small instance and 4-20 large ones. The small one basically only exists for cluster discovery.

What you should really do is connecting to your Couchbase cluster through a reverse-proxy (such as Haproxy) instead of a constantly-up node. The reverse-proxy will have all the potential nodes in its pool, constantly looking for which nodes are really up, and dispatching connections to those nodes. As soon as a node goes down, the connection will be re-established to an alive node.

You can read more about this architecture description on the Couchbase documentation.

Upvotes: 1

Vladislav Koroteev
Vladislav Koroteev

Reputation: 530

No, there isn't method that does what you want. Keys in CB throws its own hash-function mapped to VBuckets, and VBuckets mapped to server. Couchbase API doesn't allow managed this mapping. All you can do is determined by the id of document server that owns this document.

Upvotes: 0

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