Text processing (part 2): Inverted Index
This is the second part of my text processing series. In this blog, we'll look into how text documents can be stored in a form that can be easily retrieved by a query. I'll used the popular open source Apache Lucene index for illustration. There are two main processing flow in the system ... Document indexing: Given a document, add it into the index Document retrieval: Given a query, retrieve th
NOSQL Patterns
Over the last couple years, we see an emerging data storage mechanism for storing large scale of data. These storage solution differs quite significantly with the RDBMS model and is also known as the NOSQL. Some of the key players include ... GoogleBigTable, HBase, Hypertable AmazonDynamo, Voldemort, Cassendra, Riak Redis CouchDB, MongoDB These solutions has a number of characteristics in common K
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