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Sunday, April 27, 2014

code study in cassandra compaction 108 and check what is actually gets remove

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Last we covered topic such as compaction via jconsole and general study into compaction  and what this article is going to focus is, when c...
Saturday, April 26, 2014

study gc parameters in cassandra 1.0.8

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Today we are going to study the GC parameter in the file cassandra-env.sh . Below are the GC parameter extracted from cassandra 1.0.8 enviro...
Friday, April 25, 2014

code dive into cassandra Stage.REPLICATE_ON_WRITE

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If you are administrator of a cassandra cluster, sometime you may notice StatusLogger started to flood in cassandra system.log. Example bel...
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Monday, April 21, 2014

Enable or disable sstable compression?

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In cassandra 2.0.6, there are a few compression for sstables, the default is LZ4Compressor . There are others such as DeflateCompressor , Sn...
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Saturday, April 19, 2014

Introduction to CRUD on cql 3.0 data type

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In a previous article, we covered a basic data definition language ,  and in this article, we are going to cover data manipulation language....
Friday, April 18, 2014

Should we use cache in application server interface to cassandra?

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There are many debates whether should a cache layer should be place in front of cassandra, read more here . Initially, if your data set stor...
Sunday, April 13, 2014

Research into cassandra nodetool cfhistograms and interpret statistics

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What is nodetool cfhistogram ? According to the official documentation definition : The nodetool cfhistograms command provides statistics a...
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