10-Day .Net Aspire Challenge: Day 6 — Redis Cache

#dotnet #csharp #webdev #aspire

Step-by-step guide on how to use the .Net Aspire Redis Cache component in Visual Studio.

Introduction

.Net Aspire framework is used to develop cloud and production-ready distributed applications. It consists of components to handle cloud-native concerns such as Redis, Postgres etc.

Prerequisites

Install.Net 8
InstallVisual Studio 2022 version 17 or higher
.Net Aspire Workload
Container runtime such asDocker Desktop
10 Day .Net Aspire Challenge

Objectives

Learn how to create a starter project using .Net Aspire with the Redis Cache.

Github Sample: The solution structure is divided into the following projects

DotnetAspireChallenge.ApiService
DotnetAspireChallenge.AppHost
DotnetAspireChallenge.ServiceDefaults
DotnetAspireChallenge.Web

Getting Started

Step 1: Install the following NuGet package

Install the following Nuget package into the subsequent project “DotnetAspireChallenge.AppHost”

dotnet add package Aspire.Hosting.Oracle

In the above project, register a server database and consume the Oracle connection using the following code.

varcache=builder.AddRedis("cache");builder.AddProject<Projects.DotnetAspireChallenge_Web>("webfrontend").WithExternalHttpEndpoints().WithReference(cache);

Step 2: Install another NuGet package

Install the following Nuget package into the subsequent project “DotnetAspireChallenge.ApiService”

dotnet add package Aspire.StackExchange.Redis.DistributedCache

then register the context into the Program.cs file as follows

builder.AddRedisDistributedCache("cache");

To add additional connection string properties using the JSON syntax

{"Aspire":{"StackExchange":{"Redis":{"ConfigurationOptions":{"ConnectTimeout":5000,"ConnectRetry":3}}}}}

Congratulations..!! You’ve successfully integrated the Redis Cache component into the .Net Aspire project.

Output Cache

The HTML or any static content can be cached as well in a web app or a Blazer app.

// Add the output cachebuilder.AddRedisOutputCache();// Build the appvarapp=builder.Build();// Add the middlewareapp.UseOutputCache();

To cache a razor page use the “OutputCache” attribute as follows

@page"/"@attribute[OutputCache(Duration=10)]

If your project requires to cache the response of APIs, you can use the same “OutputCache” attribute as follows

app.MapGet("/products/{ProdId}",(intProdId)=>$"The product ID is{ProdId}.").CacheOutput();app.MapGet("/products/{ProdId}",[OutputCache](intProdId)=>$"The product ID is{ProdId}.");