查询

Queries

The third and final type of "Messages" that an Axon application is associated with are Query Messages (or simply Queries). This section of the reference guide intends to cover in detail the capabilities that the Axon Framework provides to help facilitate Query Message Development.

A summary of the various sub-sections is given below.

Sub-Section	Purpose
Query Processing	Short introduction to the Query Processing capabilities provided by the Axon Framework
Query Dispatchers / Query Handlers	Functional Development concerns for Query Messages using the Axon Framework
Implementations	Non-Functional Development concerns for Query Messages using the Axon Framework
Configuration	Configuration concerns for Query Messages using the Axon Framework

This guide is complemented by a video tutorial which gives a practical demonstration of the concepts explained in this section. The tutorial is available at -> Axon Coding Tutorial - Query Messages