This only focuses on Membase buckets currently, memcached buckets are a lot easier to size and is based just on how much data you want the bucket to hold since it's all RAM based and will "evict" data when the RAM is full.
perry
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Seems like there are a couple different questions here...
You can get the actual size of a bucket by using the getStats call within the PHP library.
As for forecasting/sizing, you can take a look at our sizing guidelines: http://www.couchbase.org/wiki/display/membase/Sizing+Guidelines
This only focuses on Membase buckets currently, memcached buckets are a lot easier to size and is based just on how much data you want the bucket to hold since it's all RAM based and will "evict" data when the RAM is full.
perry
Forum support is great for free but sometimes you need a guaranteed response time and dedicated resources for your questions or issues.
Consider purchasing enterprise-level support from Couchbase: http://www.couchbase.com/products-and-services/overview
Call or email "sales -at- couchbase-dot- com" today!