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Mule api gateway overview
Prepared by – Sanjeet Pandey
Mule API Gateway Overview
• RAML stands for RESTful API Modeling Language.
• RAML is a simple and succinct way of describing practically-RESTful APIs.
• It encourages reuse, enables discovery and pattern-sharing, and aims for merit-based
emergence of best practices
• RAML is built on broadly-used standards such as YAML and JSON and is a non-proprietary,
vendor-neutral open spec.
• API Designer is the Anypoint Platform for APIs custom environment specifically dedicated to
designing and writing an API definition in RAML.
• Mule ESB allows building an API using APIKit.
• APIkit is an open-source, declarative toolkit specially created to facilitate REST API
• It is a simple framework that caters to API-first development,
• It enforces good API implementation practices. Rather than spending weeks or months
building an API, you can use this toolkit to develop, document, and test an API within a few
days or even hours
• Once an API is built, Anypoint platform allows deploying your API on on-premise or cloud
• API Gateway is specifically built to deploy a RAML based API implementation or creating a
proxy for an existing API. Following are the possible configurations.
• Once a URL is defined for your API, the proxy application is deployed in API Gateway for
monitoring and managing your API
• Mule supports defining several run time policies against your API. Some of the common most
popular policies are as follows:
• HTTP Basic Authentication
• LDAP Security Manager
• IP Whitelist
• IP Blacklist
• Rate Limiting
• Client ID Enforcement
• External OAuth 2.0 Token Validation Policy
• Mule also supports defining and managing SLA’s and API versions.
• An organisation can create their own SLA tiers and define rate limits for APIs.
• Based on API consumer’s subscriptions, corresponding SLA can be mapped against an API.
• It is very easy to create new versions of an API and define different set of polices for new
version of API if required.
• API Gateway automatically generates analytics of the API usage
• It allows you to view
• no. of times API has been called during a selected interval
• Location from where API is consumed
• Name of the application and platform which is consuming your API
• It allows to create customer reports and charts based on business requirement which
helps in taking critical business decisions
• It also allows you to create custom dashboards to provide relevant analytics that a
particular business user may be interested in.
• To engage with the consumers of your API, Anypoint platform allows to create API
portal for your API.
• There are three kinds of elements you can add to build up the content of your
• Adding Pages: Write plain markdown text, ideal for describing what your
API does in broad terms, or to communicate any other information your
users may find useful.
• API Reference: If your API has a RAML definition attached to it in its API
Version Details page, you can add an automatically generated interactive
console that not only lists and describes the possible calls your API
supports, it can even be used by your users to perform live calls to it.
• Adding an API Notebook: A versatile interactive tool, ideal for writing
tutorials about how to use your API or even about how to integrate it with