2. Getting started

Here is a simple example of using a memory cache in an ASP.NET Core application. Check samples for more.

Define the caching configuration in the ASP.NET Core startup file

builder.Services.AddFluentCaching(cacheBuilder => cacheBuilder
    .For<Cart>(_ => _.UseAsKey(c => $"card-{c.Id}").And().SetExpirationTimeoutTo(5).Minutes
        .With().SlidingExpiration().And().StoreInMemory())

Inject ICache object and use it

app.MapPost("/cart-items", async ([FromBody] CartItemDto dto, ICache cache) =>
{
    var cart = await cache.RetrieveAsync<Cart>(dto.CartId) ?? new Cart(dto.CartId);
    var existingItem = cart.Items.FirstOrDefault(i =>
        i.ProductName.Equals(dto.ProductName, StringComparison.InvariantCultureIgnoreCase));
    if (existingItem != null)
    {
        existingItem.Quantity += dto.Quantity;
    }
    else
    {
        cart.Items.Add(new CartItem(dto.ProductName, dto.Quantity));
    }

    await cache.CacheAsync(cart);
});

app.MapGet("/{cartId:guid}/cart-items", (Guid cartId, ICache cache) => cache.RetrieveAsync<Cart>(cartId));