Apache Camel Interview Questions
- 1) What is Apache Camel?
- 2) Enlist few good uses for Apache Camel?
- 3) What is basic differences between Apache Camel and Kafka?
- 4) What is Processor in Apache Camel?
- 5) What are Components in Apache Camel?
- 6) What are routes in Apache Camel?
- 7) What is a context in Apache Camel?
- 8) How to rollback transaction in Apache Camel DSL?
- 9) How to start the execution of routes Apache Camel?
- 10) What Are Eips In Apache Camel?
- 11) What is apache jmeter?
Below are the list of Best Apache Camel Interview Questions and Answers
Apache Camel is an open-source integration framework for message-oriented middleware with a rule-based routing and mediation engine.It is based on known Enterprise Integration Patterns that provides a Java object-based implementation of Enterprise Integration Patterns using API.
Apache Camel is a good choice when you want to integrate several applications with different protocols and technologies. You can use it with Java, Scala, Groovy or Spring XML.
The difference between the Apache camel and Kafka are:
|It is basically an open-source framework. It basically or mainly focuses on making things easier. Also, they make the integration process very simple and sorted for the developers.||It has a very unique design messaging system. It is a log service that is distributed and partitioned.|
|It basically focuses on enterprise integration patterns. Also, it is really and highly configurable.||It has a very high and reliable performance efficiency. Also, it is really scalable.|
Processor is Apache Camel is an interface that is used to implement consumers of message exchanges or Message Translator.
A Component in Apache Camel is a factory or collection of Endpoint instances. We can configure Component instances explicitly and add them to a CamelContext in an IoC container like Spring or Guice. Components can be auto-discovered using URIs.
Apache Camel provides numerous pre-built components. Below we have listed some important Camel components from the core module.
For complete list visit: LIST OF CAMEL COMPONENTS
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.
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.
To rollback transaction in Apache Camel DSL, you can perform the following steps:
- Remove Spring transaction manager.
- Remove Spring transaction policy.
- Remove transacted() from Camel route.
To start the execution of routes Apache Camel, you can perform the following steps:
- Create a CamelContext.
- Optionally, configure components or endpoints.
- Add whatever routing rules you wish using the DSL and RouteBuilder or using XML DSL.
- Start the Camel context.
EIPS (ENTERPRISE INTEGRATION PATTERNS) is an architectural design pattern that defines code-agnostic workflows for common business tasks.
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.
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