A capped collection for replication

A log file with all updates

A distributed collection in each node of a ReplicaSet

A temporary collection used as a buffer

Geolocalized data (RTree)

Partitionned data (Hash index)

Exact match (BTree)

Textual data (Lucene)

{ "title" : "Star Wars: The last Jedi", "tag" : ["Adventure", "Fantastic", "SF"], "year" : 2015}

{ "title" : "Kiss them for me", "tag" : ["Comedy"], "year" : 1957}

{ "title" : "Vertigo", "tag" : ["Thriller", "Drama", "Romance"], "year" : 1958 }

{ "title" : "Demonic", "tag" : ["Horror", "Thriller"], "year" : 2015}

js

rs

db

sh

mongo

BigTable

Google File System

HDFS

DynamoDB

We cannot filter (predicate) a nested attribute of a TYPE

A UDA is Map/Reduce function

We cannot make aggregates in CQL

We need to create a User Define Aggregate function to make aggregates