persistence/DD.Persistence.Database/RepositoriesCached/DataSchemeCachedRepository.cs

using DD.Persistence.Models;
using DD.Persistence.Database.Postgres.Repositories;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Caching.Memory;

namespace DD.Persistence.Database.Postgres.RepositoriesCached;
public class DataSchemeCachedRepository : DataSchemeRepository
{
    private readonly IMemoryCache memoryCache;

    public DataSchemeCachedRepository(DbContext db, IMemoryCache memoryCache) : base(db)
    {
        this.memoryCache = memoryCache;
    }

    public override async Task Add(DataSchemeDto dataSourceSystemDto, CancellationToken token)
    {
        await base.Add(dataSourceSystemDto, token);

        memoryCache.Set(dataSourceSystemDto.DiscriminatorId, dataSourceSystemDto);
    }

    public override async Task<DataSchemeDto?> Get(Guid discriminatorId, CancellationToken token)
    {
        var result = memoryCache.Get<DataSchemeDto>(discriminatorId)
            ?? await base.Get(discriminatorId, token);

        return result;
    }
}