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you

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welcome to section eight working with

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akka HTTP in the previous section we

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were working with a curse streams we

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have looked into the main parts annika

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streams sources flows and sinks and we

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were working with graphs and stream I oh

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and finally we tested them in this

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section we will introduce another module

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of akka akka HTTP we'll do a quick

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introduction to the aqha HTTP module and

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work with the client-side and

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server-side api's we will then implement

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a restful api server and introduce

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testing let's start with the first intro

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video first we'll look at how the HTTP

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module fits into the aqha ecosystem and

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then we'll see which modules it itself

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is composed of let's start acha is a

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toolkit for building highly concurrent

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and distributed applications when you

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think about distribution you think about

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how to integrate the stuff that we've

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just distributed if you want to

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distribute your application across

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threads acha gives you actors and when

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you want to distribute your application

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across machines acha gives you a cluster

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and akka remoting when your application

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wants to interact with external services

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akka gives you a key HTTP since HTTP is

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the de facto standard of many web-based

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applications and the whole world talks

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using this protocol it makes sense when

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you want to talk to the external world

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you use HTTP module acha HTTP isn't a

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web framework it's a toolkit for

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providing and consuming HTTP based

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services this means the main goal of

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akka HTTP is to integrate your

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application with the external world and

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if you think about implementing the web

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application that has a lot of views it

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needs to prepare assets such as images

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that can press JavaScript and CSS and so

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on thus it is better to choose the web

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framework play rather than occur HTTP

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the akka HTTP module is implemented on

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top of extremes which are implemented on

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top of a key actors each layer provides

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additional capabilities and all limit

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to what you can do with them it has a

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full server and client side HTTP 1.1

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stack in other words if you want to talk

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with the external service you will need

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to use a client-side API and if you want

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to provide a service to the world you

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will need to use a server-side API acha

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HTTP is structured into several modules

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acha HTTP core which contains a complete

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low level for server and client side

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implementation of HTTP such as a

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connection and TLS management acha HTTP

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which contains higher level

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functionality such as marshalling

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compression decompression as well as a

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powerful routing dsl for defining

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http-based ap is on the server side acha

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HTTP test kit which contains a set of

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utilities for verifying server side

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service implementations next we have a

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cat HTTP spray Jason which contains a

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predefined glue code for serializing and

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deserializing custom types from and to

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Jason with spray Jason it is possible to

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use acha HTTP with other Jason

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serializes and there exist community

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projects providing these integrations if

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you prefer to use something other than

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sprays JSON library which is very fast

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that requires a bit of coding to set up

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lastly we have a cat HTTP XML which

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contains a predefined glue code for

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serializing and deserialising custom

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types from and to XML with Scarlett XML

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at the end of the first video on acha

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HTTP we just introduced acha HTTP module

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and its structure