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CQRS with caching

anton-martyniuk edited this page Sep 2, 2022 · 1 revision

Modern generic CQRS Commands and Queries with caching support use Modern generic repositories and cache to perform CRUD operations. To use Service with caching install the Modern.Services.DataStore.Cached.DependencyInjection and Modern.Cache.InMemory.DependencyInjection Nuget packages and register them within Modern builder in DI:

builder.Services
    .AddModern()
    .AddInMemoryCache(options =>
    {
        options.AddCache<AirplaneDto, long>();
        
        options.CacheSettings.AbsoluteExpirationRelativeToNow = TimeSpan.FromMinutes(30);
        options.CacheSettings.SlidingExpiration = TimeSpan.FromMinutes(10);
    })
    .AddCachedCqrs(options =>
    {
        options.AddQueriesCommandsAndHandlersFor<AirplaneDto, AirplaneDbo, long, IModernRepository<AirplaneDbo, long>>();
    });

Or install the Modern.Services.DataStore.Cached.DependencyInjection and Modern.Cache.Redis.DependencyInjection Nuget packages and register them within Modern builder in DI:

builder.Services
    .AddModern()
    .AddRedisCache(options =>
    {
        options.AddCache<AirplaneDto, long>();

        options.RedisConfiguration.ConnectionString = redisConnectionString;
        options.RedisConfiguration.AbortOnConnectFail = false;
        options.RedisCacheSettings.ExpiresIn = TimeSpan.FromMinutes(30);
    })
    .AddCachedCqrs(options =>
    {
        options.AddQueriesCommandsAndHandlersFor<AirplaneDto, AirplaneDbo, long, IModernRepository<AirplaneDbo, long>>();
    });

Specify the type of Dto and dbo entity models, primary key and modern repository.
CQRS requires one of modern repositories to be registered.
When using InMemoryCache modify the CacheSettings of type MemoryCacheEntryOptions to specify the cache expiration time.
When using RedisCache modify the RedisConfiguration of StackExchange.Redis package and RedisCacheSettings expiration time.

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