In Chapter 3, Working with Data Grids, we learned to populate and fetch Apache Ignite cache entries using the key-value pair API. This data access API is really fast, but it lacks querying capability. The next section explains the Apache Ignite Query API, used to efficiently manipulate cached entries.

This chapter covers two important components of Apache Ignite architecture: Apache Ignite Query API and distributed computing using the Apache Ignite Compute Grid. The following topics will be covered:

•  Query API
•  Compute grid