Couchbase Q&A

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tjhack's picture
Asked 1 hour 50 min ago

MVCC for concurrent user access and updates to document

Hi guys,

I have been having a read of MVCC within Couchbase db.

I have come to a point where I need to implement but am confused in regards to whether I should be using CAS or not to do the job?

Basically there could be a few users accessing the documents within couchbase...

urbangroove's picture
Asked 10 hours 45 min ago

Couchbase indexing with Apache Storm

Hello,

I am planning to use Couchbase with Apache Storm. Since Storm inserts data into Couchbase heavily(i.e. 2~3k updates or inserts per second), view's indexing also keeps updated and restarted endlessly with the default auto-indexing settings. So querying with stale=false is always...

fredericb's picture
Asked 1 day 2 hours ago
Latest activity 22 hours 24 min ago

How to write Where condition on arrays using INDEX

While trying the N1QL language, I found a difficulty to request the following:

Let say the document contains, among other attributes, an array of values as in
varArray : [ val1, val2, val3 ]

How can I...

fredericb's picture
Asked 1 day 2 hours ago
Latest activity 22 hours 23 min ago

How to partially update a document

Many times, it is very convenient to only update one attribute instead of loading everything into memory and then pushing everything onto the wire, specially when a few changed (let say only 1% had changed).

I did not find any element, except an issue opened from 2012/06 (...

lucapale's picture
Asked 1 day 4 hours ago

Updating existing Index on views

I am building an app on Phonegap and I have a view, i.e.:

sites : {
			map : function(doc) 
						{
							if (doc.type == "site" && doc.created_at && doc.name && doc.geography
...
mingram's picture
Asked 1 day 4 hours ago

Is it possible to have different document lifetimes either side of an XDCR link?

I currently have a Couchbase cluster configured and hosting a lot of documents. I'd like to have a second cluster where all the documents would be replicated to but where they would live for a much longer period of time. That is, documents would be not be available after, say, 7 days in the...

doronaviguy's picture
Asked 1 day 9 hours ago

querying a compound key from a view

Ok my keys looks like that

key = [ 1404891029233,"batman" ]
key = [ 1404891029283,"superman" ]
key = [ 1404898029283,"spiderman" ]

i want to do a range query ,
to get all the "superman" records ?

query =>
startkey=[0,"superman"]
endkey=[...

vakoroteev's picture
Asked 1 day 20 hours ago

Server side implementation of set document operation with Replicate value greater zero

I'm working with Couchbase (Java SDK) more than one year and from the beginning I was very worried about one question: why set documents with Replicate.ONE SO slow? I have reached only ~10-15 sets per second. I worked with two nodes of Couchbase and on very good application servers, so such...

couchbaselearner's picture
Asked 1 day 22 hours ago

Can I save a document on disk only instead of memory in Couchbase server?

Hi,

I am new to couchbase, currently my company is using couchbase server to save data for fast retrieval, but we have a document with 500mg that only want to save into disk instead of memory.

Is any one can suggest some approach to save this document only into disk in...

boldt's picture
Asked 2 days 5 hours ago

strange problems with increment

Hi,

I'm running the following code on couchbase 2.5.1 and java sdk versions 1.3.2 and 1.4.2

    	bucket.couchbaseClient.set
...

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