So what exactly is Couchbase? It is a merger of two NoSQL technologies (an increasingly popular technology storing complex data, especially data with multiple nested levels), Membase and CouchDB, which serves as a document database.
Couchbase is designed for interactive web applications. It’s data model is flexible, it offers considerable and easy scalability, and it provides reliable and superlative performance.
The primary thing to remember, as any couchbase expert will tell you, is that the primary data storage unit in a couchbase server is the JSON document. This means that the application is not cluttered with inflexible relational database tables. Nor is there any need for schema migrations, since the application objects are all modelled as documents.
One thing your couchbase consultant might tell you, is that Couchbase distributes data horizontally and uniformly across different nodes. To do so it uses hash sharding, and once the document key is hashed into a given partition (the system has a 1024 fixed partitions) then that is that – the document is localized into that position form now on. Since each partitions is associated with a specific cluster node, adding or removing nodes will lead the system to spur partition migration from one node to another. This architecture protects couchbase from being vulnerable to a single failure point.
What is Cloud migration? Essentially, migrating the data, applications and other elements of your business to a cloud based computing platform.
Not all cloud migrations are equal, however. Transferring applications and data from a on-site data center and server to the unsecured public cloud is certainly one type of migration which companies with non-sensitive operations might undertake. However, it is just as likely for cloud migration to involve migration from one type of cloud to another – typically one that offers specialized security or services relevant to that specific data type. Finally, although the trend is for more and more activities to relocate to the cloud, unclouding, where data and applications are relocated back to an onsite server.