Organizing your data
In this section, we will discuss how to divide your data into multiple indices. Elasticsearch provides index aliases, which make it very easy to query multiple indices at once. It also supports index templates to configure automatic index creation. We will also discuss how to deal with time-based data, such as logs, which is a common Elasticsearch use case.
Index alias
An index alias is a pointer to one or more indexes. A search operation executed against an alias is executed across all the indexes the alias points to. The coordinating node executes the request on all indices, collects the results, and sends them back to the client. The index operation, on the other hand, cannot be executed on an alias that points to more than one index. It is recommended to use an alias instead of the actual index name in your application. If the alias needs to point to a different index later, it would be an easy switch.
Due to how the data in stored in the inverted index, mappings of...
