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You cannot run Riak easily on Windows. Riak is an available partition-tolerant database. You should always be able to read from and write to Riak, and hardware nodes could be added easily. The structure of Riak is along the lines of bucket/key/value. Buckets organize documents and you can use the key of a document to retrieve it. The query syntax for Riak is the same as the Lucene full-text search engine. Like many other NoSQL databases, you can define MapReduce function pairs.
And finally, you can use key filters with Riak. Key filters allow you to pick up records with keys matching a certain criteria. This way you can search for specific documents without having to analyze the contents of the document. Riak is very similar to CouchDB but there are a few things that set it apart. Riak allows you to use Lucene syntax and also allows you to filter keys before searching the document contents.
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