Apache Camel Interview Questions For Experienced

What is an exchange in Apache Camel ?Camel Exchange represents an abstraction for an exchange of messages which involves a request message and its corresponding reply or an exception message. It consists of-

  • Exchange ID
  • Message Exchange Pattern
  • InOnly message
  • InOut message
  • Exception
  • Properties
  • Just for you: FREE 60-day trial to the world’s largest digital library.

    The SlideShare family just got bigger. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd.

    Apache Camel Interview Questions And Answers

    Q. What is Apache Camel ?

    Answer: In an enterprise, a number of systems of different types exist. Some of these may be legacy systems while some may be new. These systems often interact with each other,and need to be integrated. This interaction or integration is not easy as the implementations of the systems, their message formats may differ. One way to achieve this is to implement code which bridges these differences. However this will be point to point integration. If tomorrow again if there is change in a system the other might also have to be changed which is not good. Instead of this point to point integration which causes tight coupling we can implement an additional layer to mediate the differences between the systems. This results in loose coupling and not affect much our existing systems. Apache Camel is a rule-based routing and mediation engine that provides a Java object- based implementation of the Enterprise Integration Patterns using an API (or declarative Java Domain Specific Language) to configure routing and mediation rules.

    Q. What are routes in Apache Camel?

    Answer: The core functionality of Apache Camel is its routing engine. It allocates messages based on the related routes. A route contains flow and integration logic. It is implemented using EIPs and a specific DSL.

    Q. What is an exchange in Apache camel?

    Answer: The message to be routed in Camel route is present in the Exchange. It is the message holder. Apache camel uses Message Exchange Patterns(MEP). Apache camel exchange can hold any kind of message. It supports a variety of formats like xml, JSON etc.

    Q. What are endpoints in apache camel?

    Answer: Camel supports the Message Endpoint pattern using the Endpoint interface. Endpoints are usually created by a Component and Endpoints are usually referred to in the DSL via their URIs.

    Q. What are various components in apache camel? Which ones have you used?

    Answer: Apache camel provides us with a number of components. These components make interacting create endpoints with which a system can interact with other external systems. For example using an ActiveMQ component we expose an ActiveMQ endpoint for interaction with external system. There are more than 100 components provided by Apache Camel. Some of them are FTP,JMX, Webservices, HTTP. Apache camel also allows users to create custom components.

    Q. What are routes in Apache Camel?

    Answer: Routes plays a critical role in Apache Camel. The application flow and logic are specified here.In Camel we can define routing rules using a Java DSL.

    Q. What is a context in Apache Camel?

    Answer: The context in Apache camel is a runtime system and loading container for all resources that are required for the execution of the routing. A context contains components and endpoints, type converters, data formats, registry and routing definition.

    Q. What Are Eips In Apache Camel?

    Answer: EIPS (ENTERPRISE INTEGRATION PATTERNS) is an architectural design pattern that defines code-agnostic workflows for common business tasks.

    Q. What is apache jmeter?

    Answer: JMeter is an Apache project which is employed as a load measuring tool that analyzes the efficiency of a variety of a spread of services, with the most specialized on web applications.

    JMeter is also employed as a unit-test means for JDBC database connections, FTP, Web services, JMS, HTTP, and TCP connections and OS native processes and one also can configure JMeter as a monitor, although this is used as a monitoring solution rather than advanced controlling and can be used for functional testing as well. Additionally, Jmeter encourages integration with Selenium which allows it to run automation scripts besides performance or load tests.

    Q. What is a Message in Apache Camel ?

    Answer: Message implements the Message pattern and represents an inbound or outbound message as part of an Exchange.It contains the data being transferred using Routes- It consists of the following fields-

    Apache Camel interview questions and Answers| Spring Boot Apache Camel| live Studies |By Ashu Sir

    Related Posts

    Leave a Reply

    Your email address will not be published. Required fields are marked *