I have created API using asp.net-core-web-api template. So I have deployed to production and when API started to processing a lot of request I paid attention to the memory.
When I was testing the API with DotMemory I noticed this:

In each jump, I’ve sending 100 request from script:

int i = 100;
for (var i1 = 0; i1 < i; i1++)
{
    var httpClient = new HttpClient();
    await httpClient.GetAsync("https://localhost:5001/api/tags");
}

I waited more than 5 minutes, but memory usage did not decrease.

This is the code that is called by the controller:

using Microsoft.EntityFrameworkCore;
using MRA.Jobs.Application.Contracts.Tags;

namespace MRA.Jobs.Application.Features.Tags;

public class GetTagsQueryHandler(IApplicationDbContext dbContext) : IRequestHandler<GetTagsQuery,List<string>>
{
    public async Task<List<string>> Handle(GetTagsQuery request, CancellationToken cancellationToken)
    {
        return (await dbContext.Tags.Select(t => t.Name).Distinct().ToListAsync(cancellationToken));
    }
}

This is TagsController code:

using Microsoft.AspNetCore.Mvc;
using MRA.Jobs.Application.Contracts.Tags;

namespace MRA.Jobs.Web.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class TagsController : ApiControllerBase
    {
        [HttpGet]
        public async Task<IActionResult> Get()
        {
            return Ok(await Mediator.Send(new GetTagsQuery()));
        }
        
    }
}

This is my dbContext registration to DI:

services.AddDbContext<ApplicationDbContext>(options =>
{
    string dbConnectionString = configuration.GetConnectionString("DefaultConnection");
    if (configuration["UseInMemoryDatabase"] == "true")
        options.UseInMemoryDatabase("testDb");
    else
        options.UseSqlServer(dbConnectionString);
});
services.AddScoped<IApplicationDbContext, ApplicationDbContext>();

Dotmemory after 13 minutes from requests:

So I don’t want to restart my server every hour :), what should I do? How can I fix that issue?