NewDb is a database factory pattern to create a new database.

NewDbWithPanic ensures a database is returned panic otherwise.

NewInMemoryHandler initialize a Mongo Db.

NewPulsarHandler initialize a Pulsar Db.

DocAlreadyExisted means document already existed in the database when a new creation is requested.

DocNotFound means no document found in the database.

InMemoryHandler is the in memory cache driver.

PulsarHandler is the Pulsar database driver.

Crud interface specifies typical CRUD opertaions for database.

Db interface embeds two other database interfaces.

Ops interface specifies required database access operations.