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<div class="paragraph">
<p>Spring Cloud Function has 4 main features:</p>
</div>
<div class="olist arabic">
<ol class="arabic">
<li>
<p>Wrappers for <code>@Beans</code> of type <code>Function</code>, <code>Consumer</code> and
<div class="paragraph">
<p>In the nutshell Spring Cloud Function provides the following features:
1. Wrappers for <code>@Beans</code> of type <code>Function</code>, <code>Consumer</code> and
<code>Supplier</code>, exposing them to the outside world as either HTTP
endpoints and/or message stream listeners/publishers with RabbitMQ, Kafka etc.</p>
</div>
<div class="ulist">
<ul>
<li>
<p><em>Choice of programming styles - reactive, imperative or hybrid.</em></p>
</li>
<li>
<p>Compiling strings which are Java function bodies into bytecode, and
then turning them into <code>@Beans</code> that can be wrapped as above.</p>
<p><em>Function composition and adaptation (e.g., composing imperative functions with reactive).</em></p>
</li>
<li>
<p>Deploying a JAR file containing such an application context with an
isolated classloader, so that you can pack them together in a single
JVM.</p>
<p><em>Support for reactive function with multiple inputs and outputs allowing merging, joining and other complex streaming operation to be handled by functions.</em></p>
</li>
<li>
<p>Adapters for <a href="https://github.com/spring-cloud/spring-cloud-function/tree/master/spring-cloud-function-adapters/spring-cloud-function-adapter-aws">AWS Lambda</a>, <a href="https://github.com/spring-cloud/spring-cloud-function/tree/master/spring-cloud-function-adapters/spring-cloud-function-adapter-azure">Azure</a>, <a href="https://github.com/spring-cloud/spring-cloud-function/tree/master/spring-cloud-function-adapters/spring-cloud-function-adapter-openwhisk">Apache OpenWhisk</a> and possibly other "serverless" service providers.</p>
<p><em>Transparent type conversion of inputs and outputs.</em></p>
</li>
</ol>
<li>
<p><em>Packaging functions for deployments, specific to the target platform (e.g., Project Riff, AWS Lambda and more)</em></p>
</li>
<li>
<p><em>Adapters to expose function to the outside world as HTTP endpoints etc.</em></p>
</li>
<li>
<p><em>Deploying a JAR file containing such an application context with an isolated classloader, so that you can pack them together in a single JVM.</em></p>
</li>
<li>
<p><em>Compiling strings which are Java function bodies into bytecode, and then turning them into <code>@Beans</code> that can be wrapped as above.</em></p>
</li>
<li>
<p><em>Adapters for <a href="https://github.com/spring-cloud/spring-cloud-function/tree/master/spring-cloud-function-adapters/spring-cloud-function-adapter-aws">AWS Lambda</a>, <a href="https://github.com/spring-cloud/spring-cloud-function/tree/master/spring-cloud-function-adapters/spring-cloud-function-adapter-azure">Azure</a>, <a href="https://github.com/spring-cloud/spring-cloud-function/tree/master/spring-cloud-function-adapters/spring-cloud-function-adapter-openwhisk">Apache OpenWhisk</a> and possibly other "serverless" service providers.</em></p>
</li>
</ul>
</div>
<div class="admonitionblock note">
<table>