{"id":16109,"date":"2022-01-11T17:31:02","date_gmt":"2022-01-11T17:31:02","guid":{"rendered":"https:\/\/swoopfunding.com\/za\/?post_type=swoop-engineering&#038;p=16109"},"modified":"2023-11-29T12:04:46","modified_gmt":"2023-11-29T12:04:46","slug":"microservices-with-dapr-mini-series-pub-sub-tye","status":"publish","type":"swoop-engineering","link":"https:\/\/swoopfunding.com\/za\/swoop-engineering\/microservices-with-dapr-mini-series-pub-sub-tye\/","title":{"rendered":"Microservices with Dapr mini-series (Pub\/Sub + Tye)"},"content":{"rendered":"\n<h4 class=\"wp-block-heading\"><br><strong>Overview<\/strong><\/h4>\n\n\n\n<p>Swoop provides instant loan offers (aka ILO as we call) to the customers powered by API to API automated journey. Since we will be connecting to a number of APIs, we needed a way to manage and abstract the common configuration in a distributed way. As our platform employs the sidecar pattern with envoy proxy and kong proxy (for API gateway), we were looking for options to separate the application core logic and common configuration as same as the sidecar pattern that can be secured and scaled at speed.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><br><strong>What is Dapr?<\/strong><\/h4>\n\n\n\n<p>Dapr&nbsp;is a&nbsp;Distributed Application Runtime, which may come across as Japanese&#8230; but let&#8217;s break it down.<\/p>\n\n\n\n<ul><li>Distributed Application&nbsp;refers to software components that are networked and which work together to achieve a common goal, examples of which are things like blockchains and microservices.<\/li><li>Runtime&nbsp;is referring to software that&#8217;s designed to support the execution of an application, which in this specific case, means supporting the execution of distributed applications.<\/li><\/ul>\n\n\n\n<p>So, in English, the same way in which the&nbsp;.NET Framework&nbsp;uses the&nbsp;Common Language Runtime (CLR)&nbsp;that makes&nbsp;.NET&nbsp;developers life easier by providing services like thread management, garbage collection, type-safety and exception handling,&nbsp;Dapr&nbsp;provides services that simplify the development and execution of microservices.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>What does it do exactly?<\/strong><\/h4>\n\n\n\n<p>Dapr&nbsp;enables you to create microservices without all the complexities that are usually attached to microservices. It does this by abstracting away the details of using and managing state stores, secrets, pub\/sub infrastructures and enables the configuration of those dependencies outside of the microservice you\u2019re developing, in effect, reducing the complexity of the software we\u2019re developing.&nbsp;<\/p>\n\n\n\n<p>So, for instance, let\u2019s say you want to use Redis for messaging\u2026 no problem\u2026<br>Changed your mind and now want to use RabbitMQ instead? Again, no problem!<\/p>\n\n\n\n<p>You don\u2019t change a single line of code in your microservice to accommodate that change! All you do is update the relevant manifests belonging to your application and Dapr takes care of the rest!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>How does it work?<\/strong><\/h4>\n\n\n\n<p>Dapr uses the Sidecar Architecture, which is a programming model where an application has another application that runs side by side with it, it resembles a sidecar attached to a motorbike and it&#8217;s a good analogy because the sidecar application shares the same lifecycle as its parent.<\/p>\n\n\n\n<p>When using&nbsp;Dapr, your application will be communicating with the&nbsp;Dapr&nbsp;sidecar that spins up at the same time your application does. The two will then communicate over either HTTP or gRCP.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"246\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.08.41-p.m.-1024x246.png\" alt=\"\" class=\"wp-image-16112\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.08.41-p.m.-1024x246.png 1024w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.08.41-p.m.-300x72.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.08.41-p.m.-768x184.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.08.41-p.m.-54x13.png 54w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.08.41-p.m.-80x19.png 80w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.08.41-p.m..png 1526w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption>A microservice with a sidecar attached, where the arrows represent the flow <br>of information between the two.<\/figcaption><\/figure>\n\n\n\n<p>For each microservice you have, you&#8217;ll have a&nbsp;Dapr&nbsp;sidecar attached to it where your app will be communicating with the&nbsp;Dapr&nbsp;sidecar and the&nbsp;Dapr&nbsp;sidecar will be communicating with other&nbsp;Dapr&nbsp;sidecars, which in turn will communicate with the microservice the sidecar is attached to.<\/p>\n\n\n\n<p>A practical example would be a scenario where we are tasked with creating a system that monitors spikes of activity on a web application and sends notifications when a spike occurs.&nbsp;<\/p>\n\n\n\n<p>The monitoring system, using&nbsp;Dapr&nbsp;would look something along the lines of this<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.09.59-p.m.-1024x209.png\" alt=\"\" class=\"wp-image-16113\" width=\"751\" height=\"153\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.09.59-p.m.-1024x209.png 1024w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.09.59-p.m.-300x61.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.09.59-p.m.-768x157.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.09.59-p.m.-54x11.png 54w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.09.59-p.m.-80x16.png 80w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.09.59-p.m..png 1518w\" sizes=\"(max-width: 751px) 100vw, 751px\" \/><\/figure>\n\n\n\n<p>The system is composed of two microservices:<\/p>\n\n\n\n<ul><li>The monitoring service (MonitoringService)<\/li><li>The notification service (NotificationService)<\/li><\/ul>\n\n\n\n<p>Each of which has a Dapr sidecar attached<\/p>\n\n\n\n<ul><li>The monitoring service (MonitoringService)<ul><li>The monitoring service Dapr sidecar (Dapr_MonitoringService)<\/li><\/ul><\/li><li>The notification service (NotificationService)<ul><li>The notification service Dapr sidecar (Dapr_NotificationService)<\/li><\/ul><\/li><\/ul>\n\n\n\n<p>When&nbsp;MonitoringService&nbsp;finds a spike of activity, it will communicate with its own Dapr sidecar&nbsp;Dapr_MonitoringService, telling it that it needs to fire off a notification.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"270\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.11.33-p.m.-1024x270.png\" alt=\"\" class=\"wp-image-16114\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.11.33-p.m.-1024x270.png 1024w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.11.33-p.m.-300x79.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.11.33-p.m.-768x203.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.11.33-p.m.-54x14.png 54w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.11.33-p.m.-80x21.png 80w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.11.33-p.m..png 1524w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>The&nbsp;Dapr_MonitoringService&nbsp;will then locate and inform the&nbsp;Dapr_NotificationService&nbsp;that a notification has to be fired passing along the details of the notification in question.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"242\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.12.29-p.m.-1024x242.png\" alt=\"\" class=\"wp-image-16115\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.12.29-p.m.-1024x242.png 1024w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.12.29-p.m.-300x71.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.12.29-p.m.-768x182.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.12.29-p.m.-54x13.png 54w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.12.29-p.m.-80x19.png 80w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.12.29-p.m..png 1522w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>The&nbsp;Dapr_NotificationService&nbsp;will then tell the&nbsp;NotificationService&nbsp;to fire off that notification.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"166\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.15.52-p.m.-1024x166.png\" alt=\"\" class=\"wp-image-16116\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.15.52-p.m.-1024x166.png 1024w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.15.52-p.m.-300x49.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.15.52-p.m.-768x124.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.15.52-p.m.-54x9.png 54w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.15.52-p.m.-80x13.png 80w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.15.52-p.m..png 1530w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>The communication between each service and sidecar occurs over either&nbsp;HTTP&nbsp;or&nbsp;gRCP, though this is abstracted away from the developer within the&nbsp;Dapr&nbsp;<a href=\"https:\/\/docs.dapr.io\/developing-applications\/sdks\/\" target=\"_blank\" rel=\"noopener\">SDKs<\/a>, you could still manually post an&nbsp;HTTP&nbsp;request directly to the&nbsp;Dapr&nbsp;sidecar if you wanted to.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Building Blocks<\/strong><\/h4>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"234\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.42.44-p.m.-1024x234.png\" alt=\"\" class=\"wp-image-16117\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.42.44-p.m.-1024x234.png 1024w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.42.44-p.m.-300x68.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.42.44-p.m.-768x175.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.42.44-p.m.-54x12.png 54w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.42.44-p.m.-80x18.png 80w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-12.42.44-p.m..png 1526w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Dapr&nbsp;has a number of different building blocks that it exposes which allow us to do a number of different things\u2026<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th><strong>Building Block<\/strong><\/th><th><strong>Description<\/strong><\/th><\/tr><tr><td>Service to Service invocation<\/td><td>Service invocation enables applications to communicate with each other through well-known endpoints in the form of http or gRPC messages.&nbsp;<br><br>Dapr provides an endpoint that acts as a combination of a reverse proxy with built-in service discovery, while leveraging built-in distributed tracing and error handling.<\/td><\/tr><tr><td>State management<\/td><td>Application state is anything an application wants to preserve beyond a single session.&nbsp;<br><br>Dapr provides a key\/value-based state and query APIs with pluggable state stores for persistence.<\/td><\/tr><tr><td>Publish &amp; Subscribe<\/td><td>Pub\/Sub is a loosely coupled communication pattern where the publishers publish messages to a&nbsp;topic, to which there are subscribers that subscribe to those&nbsp;topics.&nbsp;<br><br>This pattern is supported between isolated applications.&nbsp;<\/td><\/tr><tr><td>Resource bindings<\/td><td>Bindings provide a bi-directional connection to external cloud or on-premise services and systems.<br><br>This enables the invocation of external services through the Dapr binding API, and also enable the triggering of your own services \/ applications by the events sent from the connected service.<\/td><\/tr><tr><td>Actors<\/td><td>An actor is an isolated and independent unit of compute and state with single threaded execution.<br><br>Dapr\u2019s implementation is based on the virtual actor pattern.<\/td><\/tr><tr><td>Observability<\/td><td>Emit metrics, logs, and traces to debug, operate and monitor Dapr system services, components and user applications.<\/td><\/tr><tr><td>Secrets<\/td><td>Dapr provides a secrets building block API and integrates with secret stores such as:<br><br>&#8211; Public cloud&nbsp;<br>&#8211; On-premise<br>&#8211; Kubernetes&nbsp;<br><br>Services can call the secrets API to retrieve secrets, for example to get a connection string to a database.<\/td><\/tr><tr><td>Configuration<\/td><td>Dapr provides a Configuration API that enables you to retrieve and subscribe to application configuration items for supported configuration stores.&nbsp;<br><br>This enables an application to retrieve specific configuration information, for example, at startup or when configuration changes are made in the store.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Getting started<\/strong><\/h4>\n\n\n\n<p>Here at Swoop, we use the&nbsp;Publish and Subscribe&nbsp;building block the most and it&#8217;s the underlying tech that helps our applications work asynchronously.&nbsp;<\/p>\n\n\n\n<p>During the first article in this&nbsp;Dapr&nbsp;mini-series, we will be covering the&nbsp;Publish and Subscribe&nbsp;building block first.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Prerequisites<\/strong><\/h5>\n\n\n\n<p>You will need to have the following installed.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><\/td><td><strong>Instructions<\/strong><\/td><td><strong>Links<\/strong><\/td><\/tr><tr><td><strong>Docker<\/strong><\/td><td>Install docker by visiting&nbsp;<a href=\"https:\/\/docs.docker.com\/desktop\/windows\/install\/\" target=\"_blank\" rel=\"noopener\">this url<\/a><\/td><td><a href=\"https:\/\/docs.docker.com\/desktop\/windows\/install\/\" target=\"_blank\" rel=\"noopener\">Install docker<\/a><\/td><\/tr><tr><td><strong>tye<\/strong><\/td><td>You must have&nbsp;.NET Core 3.1&nbsp;installed on your system before attempting to install&nbsp;tye, after which you can execute the following command in&nbsp;PowerShell&nbsp;that will install&nbsp;tye&nbsp;onto your system.<br><br><code>dotnet tool install -g Microsoft.Tye --version \"0.10.0-alpha.21420.1\"<\/code><\/td><td><a href=\"https:\/\/github.com\/dotnet\/tye\/blob\/main\/docs\/getting_started.md\" target=\"_blank\" rel=\"noopener\">Getting started with tye<\/a><\/td><\/tr><tr><td><strong>Dapr<\/strong><\/td><td>Using&nbsp;PowerShell, install&nbsp;Dapr&nbsp;using the following command.<br><br><code>powershell -Command \"iwr -useb https:\/\/raw.githubusercontent.com\/dapr\/cli\/master\/install\/install.ps1 | iex\"<\/code><br><br>Once the command has finished executing. We need to initialise and install the&nbsp;Dapr&nbsp;runtime binaries.<br><br>First ensure that&nbsp;docker&nbsp;is running.<br><br>Then, execute:<br><code>dapr init<\/code><br><br>And finally to verify the installation&nbsp;<br><code>dapr --version<\/code><br><br>And you should get a response such as this:<br><code>CLI version: 1.5.1 Runtime version: 1.5.1<\/code><\/td><td><a href=\"https:\/\/docs.dapr.io\/getting-started\/install-dapr-cli\/\" target=\"_blank\" rel=\"noopener\">Install Dapr CLI<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Performing the steps above will have prepared our environment to begin developing our microservice and demonstrating&nbsp;Daprs capabilities.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Getting started with the&nbsp;<\/strong>Pub\/Sub<strong>&nbsp;building block<\/strong><\/h4>\n\n\n\n<p>To get started, let&#8217;s create a new&nbsp;ASP.NET Core WebApi&nbsp;solution.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"680\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.56.38-p.m.-1024x680.png\" alt=\"\" class=\"wp-image-16134\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.56.38-p.m.-1024x680.png 1024w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.56.38-p.m.-300x199.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.56.38-p.m.-768x510.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.56.38-p.m.-30x20.png 30w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.56.38-p.m.-80x53.png 80w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.56.38-p.m..png 1376w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Next, let\u2019s name our solution&nbsp;DaprBuildingBlocks&nbsp;and our project&nbsp;DaprBuildingBlocks.PubSubBlock<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"681\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.57.45-p.m.-1024x681.png\" alt=\"\" class=\"wp-image-16135\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.57.45-p.m.-1024x681.png 1024w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.57.45-p.m.-300x199.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.57.45-p.m.-768x511.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.57.45-p.m.-30x20.png 30w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.57.45-p.m.-80x53.png 80w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.57.45-p.m..png 1366w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>After we click&nbsp;Next, on the&nbsp;Additional information&nbsp;page, make sure that the project is configured as below.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"672\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.59.21-p.m.-1024x672.png\" alt=\"\" class=\"wp-image-16136\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.59.21-p.m.-1024x672.png 1024w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.59.21-p.m.-300x197.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.59.21-p.m.-768x504.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.59.21-p.m.-30x20.png 30w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.59.21-p.m.-80x53.png 80w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-4.59.21-p.m..png 1374w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Now that our solution has been created, we need to install the Dapr NuGet packages before we do anything else.<\/p>\n\n\n\n<p>To install the&nbsp;Dapr&nbsp;NuGet package, either search for&nbsp;Dapr.AspNetCore&nbsp;NuGet package in the NuGet Package Manager or install it using the Package Manager Console with the command below<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">Install-Package Dapr.AspNetCore -Version 1.5.0<\/code><\/pre>\n\n\n\n<h5 class=\"wp-block-heading\"><br>Configuration<\/h5>\n\n\n\n<p>Once the NuGet package has been installed, we need to configure our&nbsp;Startup.cs&nbsp;class to make sure that the&nbsp;Daprdependency is configured and injected into our application.<\/p>\n\n\n\n<p>Startup.cs<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">public void ConfigureServices(IServiceCollection services)\n{\n    \/\/ Adds the Dapr client to the IoC container\n    services.AddDaprClient(); \n\n    \/\/ `.AddDapr()` Adds the Dapr integration for MVC\n    services.AddControllers()\n            .AddDapr(); \n\n    services.AddSwaggerGen(c =&gt;\n    {\n        c.SwaggerDoc(\"v1\", new OpenApiInfo { Title = \"DaprBuildingBlocks.PubSubBlock\", Version = \"v1\" });\n    });\n}\n\npublic void Configure(IApplicationBuilder app, IWebHostEnvironment env)\n{\n    if (env.IsDevelopment())\n    {\n        app.UseDeveloperExceptionPage();\n        app.UseSwagger();\n        app.UseSwaggerUI(c =&gt; c.SwaggerEndpoint(\"\/swagger\/v1\/swagger.json\", \"DaprBuildingBlocks.PubSubBlock v1\"));\n    }\n\n    app.UseRouting();\n\n    \/\/ Ensure that you are including thise line\n    \/\/ Without which, the contents of your published \n    \/\/ object will contain nothing but default values.\n    app.UseCloudEvents();\n\n    app.UseEndpoints(endpoints =&gt;\n    {\n        endpoints.MapControllers();\n        \n        \/\/ We also require this line to subscribe to the \n        \/\/ messages that we publish.\n        endpoints.MapSubscribeHandler();\n    });\n}<\/code><\/pre>\n\n\n\n<h5 class=\"wp-block-heading\"><br><strong>Publishing<\/strong><\/h5>\n\n\n\n<p>To publish a message, let\u2019s navigate to the&nbsp;WeatherForecastController.cs&nbsp;file.<\/p>\n\n\n\n<p>Create a new controller action named&nbsp;PublishAsync&nbsp;like so:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">[HttpPost(\"publish\")]\npublic async Task&lt;IActionResult&gt; PublishAsync([FromBody]WeatherForecast forecast, [FromServices] DaprClient daprClient)\n{\n    await daprClient.PublishEventAsync(\"pubsub\", \"forecast\", forecast);\n    return Ok();\n}<\/code><\/pre>\n\n\n\n<p>What we\u2019re doing above is, starting from the method signature is injecting the&nbsp;DaprClient&nbsp;into the controller action once the controller action is invoked ([FromServices] DaprClient daprClient).<\/p>\n\n\n\n<p>We then use the&nbsp;DaprClient&nbsp;to publish an event using&nbsp;PublishEventAsync&nbsp;with:<\/p>\n\n\n\n<ul><li>The name of the&nbsp;PubSub<\/li><li>The name of the&nbsp;Topic<\/li><li>The object itself that we want to broadcast<\/li><\/ul>\n\n\n\n<p>As method arguments, and with that, we will have published a message to our Pub\/Sub topic, it\u2019s that easy!<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><br><strong>Subscribing<\/strong><\/h5>\n\n\n\n<p>To subscribe to a topic, let\u2019s create a new controller action called&nbsp;Subscribe&nbsp;with the following contents:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">[HttpPost(\"subscribe\")]\n[Topic(\"pubsub\", \"forecast\")]\npublic IActionResult Subscribe(WeatherForecast forecast)\n{\n    forecast.GetType()\n            .GetProperties()\n            .Select(x =&gt; $\"{x.Name}:{x.GetValue(forecast)}\")\n            .ToList()\n            .ForEach(Console.WriteLine);\n\n    return Ok();\n}<\/code><\/pre>\n\n\n\n<p>As you\u2019ll notice, there\u2019s a special&nbsp;Attribute&nbsp;we&#8217;re using here called&nbsp;Topic. Using this&nbsp;Attribute&nbsp;is what enables us to subscribe to messages broadcasted on the topic specified within its parameters.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Tying it all together<\/strong><\/h4>\n\n\n\n<p>To tye things up, let\u2019s navigate to the root directory of our project using the file explorer.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"964\" height=\"258\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.04.05-p.m..png\" alt=\"\" class=\"wp-image-16137\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.04.05-p.m..png 964w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.04.05-p.m.-300x80.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.04.05-p.m.-768x206.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.04.05-p.m.-54x14.png 54w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.04.05-p.m.-80x21.png 80w\" sizes=\"(max-width: 964px) 100vw, 964px\" \/><\/figure>\n\n\n\n<p>In this directory, create a new file called&nbsp;tye.yaml, we are going to use this manifest to make sure all of our dependencies are available and configured for us to use when we start testing our application. Let\u2019s open&nbsp;tye.yaml&nbsp;and use the following configurations.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">name: dapr\nextensions:\n- name: dapr\n  components-path: \".tye_components\"\n  \nservices:\n- name: redis\n  image: redis\n  bindings:\n    - port: 6380\n      containerPort: 6379\n   \n- name: pubsub-api\n  project: DaprBuildingBlocks.PubSubBlock\/DaprBuildingBlocks.PubSubBlock.csproj\n  bindings:\n    - name: http\n      port: 35002\n      protocol: http\n  env:\n    - ASPNETCORE_URLS=http:\/\/+:35002<\/code><\/pre>\n\n\n\n<p>As you\u2019ll notice, we\u2019ve specified a&nbsp;components-path&nbsp;field to&nbsp;.tye_components, under the extension name&nbsp;dapr.&nbsp;<\/p>\n\n\n\n<p>What is happening here is we&#8217;re letting&nbsp;dapr&nbsp;know that the manifests relevant to it, is stored under that directory which is what we will be creating next.<\/p>\n\n\n\n<p>Under&nbsp;services, you&#8217;ll also notice that we&#8217;re using&nbsp;Redis&nbsp;and we also specify the relative path to the very project we just created under the field&nbsp;project.&nbsp;tye&nbsp;will use the services we define here and if it doesn\u2019t exist it will try to fetch it, it will know what to look for if the&nbsp;image&nbsp;field is set.<\/p>\n\n\n\n<p>So, moving on, let\u2019s create our&nbsp;.tye_components&nbsp;directory.<\/p>\n\n\n\n<p>Within that directory let\u2019s create a new manifest called&nbsp;pubsub.yaml<\/p>\n\n\n\n<p>\\.tye_components\\pubsub.yaml<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">apiVersion: dapr.io\/v1alpha1\nkind: Component\nmetadata:\n&nbsp; name: pubsub\nspec:\n&nbsp; type: pubsub.redis\n&nbsp; version: v1\n&nbsp; metadata:\n&nbsp; - name: redisHost\n&nbsp; &nbsp; value: localhost:6380<\/code><\/pre>\n\n\n\n<p>This manifest is used by&nbsp;dapr&nbsp;to use the&nbsp;pubsub&nbsp;building block, in particular, the&nbsp;redis&nbsp;pubsub&nbsp;building block within our application.<\/p>\n\n\n\n<p>Once you\u2019ve saved the manifest, let\u2019s go back to our root directory.<\/p>\n\n\n\n<p>Open a PowerShell window here at the root and execute the command&nbsp;tye run &#8211;watch &#8211;dashboard.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"950\" height=\"276\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.07.35-p.m..png\" alt=\"\" class=\"wp-image-16138\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.07.35-p.m..png 950w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.07.35-p.m.-300x87.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.07.35-p.m.-768x223.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.07.35-p.m.-54x16.png 54w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.07.35-p.m.-80x23.png 80w\" sizes=\"(max-width: 950px) 100vw, 950px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"863\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.08.31-p.m.-1024x863.png\" alt=\"\" class=\"wp-image-16139\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.08.31-p.m.-1024x863.png 1024w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.08.31-p.m.-300x253.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.08.31-p.m.-768x647.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.08.31-p.m.-24x20.png 24w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.08.31-p.m.-80x67.png 80w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.08.31-p.m..png 1094w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>To add some context on what that command does is, first we\u2019re telling&nbsp;tye&nbsp;to&nbsp;run&nbsp;our application.<\/p>\n\n\n\n<p>Then we\u2019re telling it to&nbsp;&#8211;watch&nbsp;our project for any changes, if you make any changes within the code of the project,&nbsp;tyewill recompile the application and restart our service to reflect our changes which makes it excellent for debugging.<\/p>\n\n\n\n<p>Now let&#8217;s navigate to our&nbsp;Swagger&nbsp;documentation for the&nbsp;Web API&nbsp;we&#8217;ve just developed and fire off a sample request.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"520\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.10.03-p.m.-1024x520.png\" alt=\"\" class=\"wp-image-16140\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.10.03-p.m.-1024x520.png 1024w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.10.03-p.m.-300x152.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.10.03-p.m.-768x390.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.10.03-p.m.-1536x780.png 1536w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.10.03-p.m.-39x20.png 39w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.10.03-p.m.-80x41.png 80w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.10.03-p.m..png 1540w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">{\n  \"date\": \"2022-01-09T22:55:32.093Z\",\n  \"temperatureC\": 100,\n  \"summary\": \"432fasfas\"\n}<\/code><\/pre>\n\n\n\n<p>The response we get back&nbsp;<em>should<\/em>&nbsp;be a status code 200. If you run into errors where you\u2019re posting this data immediately after you\u2019ve started the application, there may be the possibility that&nbsp;Dapr&nbsp;hasn\u2019t had the opportunity to initialise properly yet, try again every few seconds or so, if that is indeed the case, you should start seeing 200 responses within a few seconds.<\/p>\n\n\n\n<p>Once you do receive a status code 200 response, let\u2019s go back to the&nbsp;tye&nbsp;dashboard to view the logs of our application.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"398\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.12.50-p.m.-1024x398.png\" alt=\"\" class=\"wp-image-16141\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.12.50-p.m.-1024x398.png 1024w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.12.50-p.m.-300x117.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.12.50-p.m.-768x299.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.12.50-p.m.-1536x597.png 1536w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.12.50-p.m.-51x20.png 51w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.12.50-p.m.-80x31.png 80w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.12.50-p.m..png 1558w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" loading=\"lazy\" src=\"https:\/\/swoopfunding.com\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.14.12-p.m.-1024x576.png\" alt=\"\" class=\"wp-image-16142\" srcset=\"https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.14.12-p.m.-1024x576.png 1024w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.14.12-p.m.-300x169.png 300w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.14.12-p.m.-768x432.png 768w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.14.12-p.m.-36x20.png 36w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.14.12-p.m.-80x45.png 80w, https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-11-at-5.14.12-p.m..png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>And there we have it\u2026 the message that we published to the&nbsp;forecast&nbsp;topic was received by the controller action that was subscribed to that very topic, the controller action was invoked and the message was printed to the console, reflected in the logs we see here.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>How Swoop uses Dapr<\/strong><\/h4>\n\n\n\n<p>Here at Swoop, we use the&nbsp;pub\/sub&nbsp;building block to make asynchronous workflows, so for instance, most recently we\u2019ve been working on integrating an open banking provider for our Australian customers. The open banking integration provider posts back the customer&#8217;s bank statements to us through a web-hook hosted by us once our customers complete the integration journey.&nbsp;<\/p>\n\n\n\n<p>Once that web-hook is invoked, an asynchronous process is started on our end, a process that is required because we have multiple consumers of the transaction data we receive.&nbsp;<\/p>\n\n\n\n<p>We receive the data from our integration partner in a number of formats including JSON and PDF, consumers of this data are independent of one another, some deal with persistence to a MongoDb data store, whilst PDFs are stored in our Azure blob storage containers, some of this data is also exposed through SalesForce.&nbsp;<\/p>\n\n\n\n<p>If so\u2026 how can we expose this data so that in future, we never have to modify our existing code for this integration, but have other microservices that can subscribe to this data in almost real-time?<\/p>\n\n\n\n<p>This is where&nbsp;Dapr&nbsp;comes in and is heavily used, we\u2019re able to keep the door open to future expansion of how we make use of this data by publishing to topics, as there are multiple consumers of these bank transactions, we\u2019re able to create event-driven processes where the publisher never needs to know about any of the subscribers, it just publishes the data and consumers never have to poll for updates, the relevant data is pushed to them, and data gets processed the moment it is received.&nbsp;<\/p>\n\n\n\n<p>A side benefit of&nbsp;Dapr&nbsp;is also resiliency, published messages can be configured to require acknowledgement by the subscriber, or else to retry delivery.&nbsp;<\/p>\n\n\n\n<p>When we aggregate all of the benefits what we\u2019re left with is first and foremost:&nbsp;<strong>reduction in complexity<\/strong>&nbsp;within our codebase. All the resiliency, pub\/sub dependencies, retry rules etc are managed within the manifests and outside of our application.&nbsp;<\/p>\n\n\n\n<p>We don\u2019t need to write any additional code within our application for those benefits, Dapr handles it all.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>References<\/strong><\/h4>\n\n\n\n<ul><li><a href=\"https:\/\/docs.dapr.io\/\" target=\"_blank\" rel=\"noopener\">https:\/\/docs.dapr.io\/<\/a><\/li><li><a href=\"https:\/\/github.com\/dotnet\/tye\" target=\"_blank\" rel=\"noopener\">https:\/\/github.com\/dotnet\/tye<\/a><\/li><li><a href=\"https:\/\/docs.docker.com\/\" target=\"_blank\" rel=\"noopener\">https:\/\/docs.docker.com\/<\/a><\/li><\/ul>\n","protected":false},"author":1,"featured_media":16164,"parent":0,"template":"","category_tech":[322],"acf":[],"featured_image_urls":{"full":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m..png",1218,694,false],"thumbnail":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-150x150.png",150,150,true],"medium":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-300x171.png",300,171,true],"medium_large":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-768x438.png",768,438,true],"large":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-1024x583.png",1024,583,true],"1536x1536":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m..png",1218,694,false],"2048x2048":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m..png",1218,694,false],"image_blog":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-408x252.png",408,252,true],"image_podcast":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-397x298.png",397,298,true],"image_banking":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-35x20.png",35,20,true],"image_blog_internal":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-840x480.png",840,480,true],"image_blog_medium":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-1024x500.png",1024,500,true],"image_single_banking":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-80x46.png",80,46,true]},"post_excerpt_stackable":"<p>Overview Swoop provides instant loan offers (aka ILO as we call) to the customers powered by API to API automated journey. Since we will be connecting to a number of APIs, we needed a way to manage and abstract the common configuration in a distributed way. As our platform employs the sidecar pattern with envoy proxy and kong proxy (for API gateway), we were looking for options to separate the application core logic and common configuration as same as the sidecar pattern that can be secured and scaled at speed. What is Dapr? Dapr&nbsp;is a&nbsp;Distributed Application Runtime, which may come&hellip;<\/p>\n","category_list":"","author_info":{"name":"root","url":"https:\/\/swoopfunding.com\/za\/author\/root\/"},"comments_num":"0 comments","featured_image_urls_v2":{"full":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m..png",1218,694,false],"thumbnail":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-150x150.png",150,150,true],"medium":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-300x171.png",300,171,true],"medium_large":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-768x438.png",768,438,true],"large":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-1024x583.png",1024,583,true],"1536x1536":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m..png",1218,694,false],"2048x2048":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m..png",1218,694,false],"image_blog":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-408x252.png",408,252,true],"image_podcast":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-397x298.png",397,298,true],"image_banking":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-35x20.png",35,20,true],"image_blog_internal":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-840x480.png",840,480,true],"image_blog_medium":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-1024x500.png",1024,500,true],"image_single_banking":["https:\/\/swoopfunding.com\/za\/wp-content\/uploads\/sites\/7\/2022\/01\/Screenshot-2022-01-12-at-9.39.58-a.m.-80x46.png",80,46,true]},"post_excerpt_stackable_v2":"<p>Overview Swoop provides instant loan offers (aka ILO as we call) to the customers powered by API to API automated journey. Since we will be connecting to a number of APIs, we needed a way to manage and abstract the common configuration in a distributed way. As our platform employs the sidecar pattern with envoy proxy and kong proxy (for API gateway), we were looking for options to separate the application core logic and common configuration as same as the sidecar pattern that can be secured and scaled at speed. What is Dapr? Dapr&nbsp;is a&nbsp;Distributed Application Runtime, which may come&hellip;<\/p>\n","category_list_v2":"","author_info_v2":{"name":"root","url":"https:\/\/swoopfunding.com\/za\/author\/root\/"},"comments_num_v2":"0 comments","_links":{"self":[{"href":"https:\/\/swoopfunding.com\/za\/wp-json\/wp\/v2\/swoop-engineering\/16109"}],"collection":[{"href":"https:\/\/swoopfunding.com\/za\/wp-json\/wp\/v2\/swoop-engineering"}],"about":[{"href":"https:\/\/swoopfunding.com\/za\/wp-json\/wp\/v2\/types\/swoop-engineering"}],"author":[{"embeddable":true,"href":"https:\/\/swoopfunding.com\/za\/wp-json\/wp\/v2\/users\/1"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/swoopfunding.com\/za\/wp-json\/wp\/v2\/media\/16164"}],"wp:attachment":[{"href":"https:\/\/swoopfunding.com\/za\/wp-json\/wp\/v2\/media?parent=16109"}],"wp:term":[{"taxonomy":"category_tech","embeddable":true,"href":"https:\/\/swoopfunding.com\/za\/wp-json\/wp\/v2\/category_tech?post=16109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}