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Course Description

MuleSoft Certified Developer – Level 1 should be able to successfully work on basic Mule 4 projects with guidance and supervision. The MCD – Level 1 (Mule 4) exam validates that a developer has the required knowledge and skills to design, build, test and debug, deploy, and manage basic APIs and integrations: moving from Anypoint Platform to Anypoint Studio and back.


She(or)He should be able to:

  • Use MuleSoft-hosted Anypoint Platform to take a basic API through all the steps of its lifecycle: design, build, deploy, manage, and govern.
  • Use Anypoint Studio to build, test, and debug basic integrations and API implementations.
  • Connect to a range of resources including databases, files, web services, SaaS applications, and JMS queues.
  • Perform basic data transformations using DataWeave 2.
  • Control event flow and handle errors.
  • Process batch records.






Explaining Application Network Basics

  • Explain MuleSoft’s proposal for closing the IT delivery gap
  • Describe the role and characteristics of the “modern API”
  • Describe the purpose and roles of a C4E
  • Define and describe the benefits of API-led connectivity and application networks
  • Define and correctly use the terms API, API implementation, API interface, API consumer, and API invocation
  • Describe the basics of the HTTP protocol and characteristics of requests and responses
  • Describe the capabilities and high-level components of Anypoint Platform for the API lifecycle
  • DEV:FUN4 Module 1
  • DEV:FUN4 Module 2


Designing and Consuming APIs

  • Describe the lifecycle of the “modern API”
  • Use RAML to define API resources, nested resources, and methods
  • Identify when and how to define query parameters vs URI parameters
  • Use RAML to define API parameters, requests, and responses
  • Use RAML to define reusable data types and format independent examples
  • Read a RAML spec and formulate RESTful requests with query parameters and/or headers as appropriate
  • DEV:FUN4 Module 3
  • DEV:DIY4 Exercise 3-1 and 4-1


Accessing and Modifying Mule Events

  • Describe the Mule event data structure
  • Use transformers to set event payloads, attributes, and variables
  • Write DataWeave expressions to access and modify event payloads, attributes, and variables
  • Enrich Mule events using target parameters
  • DEV:FUN4 Module 6
  • DEV:DIY4 Exercise 6-1, 7-1, and 7-2
  • Enriching Data with Target Parameters


Structuring Mule Applications

  • Parameterize an application using property placeholders
  • Define and reuse global configurations in an application
  • Break an application into multiple flows using private flows, subflows, and the Flow Reference component
  • Specify what data (payload, attributes, variables) is persisted between flows when a Flow Reference is used
  • Specify what data (payload, attributes, variables) is persisted between flows when a Mule event crosses a connection boundary
  • Specify what data (payload, attributes, variables) exists in a flow before and after a call in the middle of a flow to an external resource
  • DEV:FUN4 Module 7
  • DEV:DIY4 Exercise 7-1 and 7-2


Building API Implementation Interfaces

  • Manually create a RESTful interface for a Mule application
  • Generate a REST Connector from a RAML specification
  • Describe the features and benefits of APIkit
  • Use APIkit to create implementation flows from a RAML file
  • Describe how requests are routed through flows generated by APIkit
  • DEV:FUN4 Module 4
  • DEV:FUN4 Module 8
  • DEV:DIY4 Exercise 4-1


Routing Events

  • Use the Choice router to route events based on conditional logic
  • Use the Scatter-Gather router to multicast events
  • Validate data using the Validation module
  • DEV:FUN4 Module 9
  • DEV:DIY4 Exercise 9-1


Handling Errors

  • Describe the default error handling in a Mule application
  • Define a custom global default error handler for an application and identify in what situations it will be used
  • Compare and contrast how the On Error Continue and On Error Propagate scopes work
  • Create one or more error handlers for a flow
  • Use the Try scope to specify error handlers for one or more event processors
  • Describe the data structure of the Mule Error object
  • Map errors to custom application errors
  • DEV:FUN4 Module 10
  • DEV:DIY4 Exercise 10-1


Transforming Data with DataWeave

  • Write DataWeave scripts to convert JSON, XML, and Java data structures to different data structures and data types
  • Use DataWeave functions
  • Define and use DataWeave variables, functions, and modules
  • Define and use custom data types
  • Apply correct DataWeave syntax to coerce data types
  • Apply correct DataWeave syntax to format strings, numbers, and dates
  • Call Mule flows from a DataWeave script
  • DEV:FUN4 Module 11DEV:DIY4 Exercise 11-1


Using Connectors

  • Retrieve data from a Database using the Database connector
  • Create parameterized SQL queries for the Database connector
  • Retrieve data from a REST service using HTTP Request or a REST Connector
  • Use a Web Service Consumer connector to consume SOAP web services
  • Use the Transform Message component to pass arguments to a SOAP web service
  • List, read, and write local files using the File connector
  • List, read, and write remote files using the FTP connector
  • Use the JMS connector to publish and listen for JMS messages
  • DEV:FUN4 Module 4
  • DEV:FUN4 Module 8
  • DEV:FUN4 Module 12
  • DEV:DIY4 Exercise 4-1, 8-1, 12-1, and 12-2


Processing Records

  • List and compare and contrast the methods for processing individual records in a collection
  • Explain how Mule events are processed by the For Each scope
  • Use the For Each scope to process records
  • Explain how Mule events are processed by the Batch Job scope
  • Use a Batch Job with Batch Steps and a Batch Aggregator to process records
  • Use the Scheduler component to trigger a flow
  • Use connector listeners to trigger flows
  • Describe the features, benefits, and process to use watermarking
  • Describe the features, benefits, and process to use automatic watermarking vs. manual watermarking
  • Use connectors with automatic watermarking capabilities
  • Persist data between flow executions using the Object Store
  • DEV:FUN4 Module 12
  • DEV:FUN4 Module 13
  • DEV:DIY4 Exercise 13-1


Debugging and Troubleshooting Mule Applications

  • Use breakpoints to inspect a Mule event during runtime
  • Install missing Maven dependencies
  • Read and decipher Mule log error messages
  • DEV:FUN4 Module 6
  • DEV:FUN4 all WTs
  • DEV:DIY4 Exercise 6-1 and Walkthrough
  • DEV:DIY4 all exercises
  • Deploying and Managing APIs and Integrations
  • Package Mule applications for deployment
  • Deploy applications to CloudHub
  • Use CloudHub properties to ensure deployment success
  • Create and deploy API proxies
  • Connect an API implementation to API Manager using autodiscovery
  • Use policies, including client ID enforcement, to secure an API
  • Create SLA tiers and apply SLA based policies
  • DEV:FUN4 Module 5
  • DEV:DIY4 Exercise 5-1 and 5-2
  • Configuring API Autodiscovery in a Mule 4 Application


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