couchbase

Is Cassandra a Key value store or wide column store?

由 旧街凉风 提交于 2019-11-27 18:40:28
问题 I'm preparing a course on NoSQL for database novices. Did a lot of research online and now, I'm in a dilemma as to categorize Cassandra as a Wide Column Store or a Key Value Store? Or shall I call it a two dimensional Key Value Store? I'm having the same issue with CouchBase. Is it a Key Value store or a Document Store? I'm looking for a Solid way to categorize NoSQL Databases in their versions in 2015. Any help is appreciated. 回答1: Since there is a Couchbase answer I'll jump-in on the

No mapping metadata found for java.lang.Object - Couchbase

由 ≡放荡痞女 提交于 2019-11-27 08:51:26
问题 I'm persisting an entity in a CouchBase repository and trying to query it. The entity looks like this: @Document(expiry = 0) public class GsJsonStore implements Serializable { private static final long serialVersionUID = 7133072282172062535L; @Id @GeneratedValue(strategy=GenerationType.AUTO) private long id; @Field private Map<String,Object> _object; @Field private String _subject; @Field private String _predicate; //Getters and Setters } I'm querying the entity by using N1QL queries on the

Difference between CouchDB and Couchbase

由 亡梦爱人 提交于 2019-11-26 23:24:16
Are there any essential differences between CouchDB and Couchbase . We've written up in more detail the relationship between CouchDB and Couchbase . In a nutshell, Couchbase Server takes all the chewy NoSQL goodness of CouchDB, and gives it the crisp hard edge of a memcache frosting. If you are new to NoSQL, basically, you store your JSON in Couchbase. It's very fast and can scale up to traffic loads as large you're likely to see. Like a relational database, it gives you back what you stored, when you need it. Yay databases! Unlike a relational database, instead of you having to specify up

Difference between CouchDB and Couchbase

由 吃可爱长大的小学妹 提交于 2019-11-26 08:39:06
问题 Are there any essential differences between CouchDB and Couchbase. 回答1: We've written up in more detail the relationship between CouchDB and Couchbase. In a nutshell, Couchbase Server takes all the chewy NoSQL goodness of CouchDB, and gives it the crisp hard edge of a memcache frosting. If you are new to NoSQL, basically, you store your JSON in Couchbase. It's very fast and can scale up to traffic loads as large you're likely to see. Like a relational database, it gives you back what you
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