Initial code commit.

Sufi.Demo.PeopleDirectory.Application/Contracts/Common/IService.cs

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+namespace Sufi.Demo.PeopleDirectory.Application.Contracts.Common
+{
+	public interface IService
+	{
+	}
+}

Sufi.Demo.PeopleDirectory.Application/Contracts/Repositories/IAsyncRepository.cs

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+using Sufi.Demo.PeopleDirectory.Domain.Common;
+
+namespace Sufi.Demo.PeopleDirectory.Application.Contracts.Repositories
+{
+	public interface IAsyncRepository<T, in TId> where T : class, IEntity<TId>
+	{
+		IQueryable<T> Entities { get; }
+
+		Task<T?> GetByIdAsync(TId id);
+
+		Task<List<T>> GetAllAsync();
+
+		Task<List<T>> GetPagedResponseAsync(int pageNumber, int pageSize);
+
+		Task<T> AddAsync(T entity);
+
+		Task UpdateAsync(T entity);
+
+		Task DeleteAsync(T entity);
+		Task<int> DeleteByIdAsync(TId id);
+
+		Task<int> CountAsync();
+	}
+}

Sufi.Demo.PeopleDirectory.Application/Contracts/Repositories/IUnitOfWork.cs

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+using Sufi.Demo.PeopleDirectory.Domain.Common;
+
+namespace Sufi.Demo.PeopleDirectory.Application.Contracts.Repositories
+{
+	public interface IUnitOfWork<TId> : IDisposable
+	{
+		IAsyncRepository<T, TId> Repository<T>() where T : AuditableEntity<TId>;
+
+		Task<int> Commit(CancellationToken cancellationToken);
+
+		Task<int> CommitAndRemoveCache(CancellationToken cancellationToken, params string[] cacheKeys);
+
+		Task Rollback();
+	}
+}

Sufi.Demo.PeopleDirectory.Application/Contracts/Services/IAppCache.cs

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+namespace Sufi.Demo.PeopleDirectory.Application.Contracts.Services
+{
+	public interface IAppCache
+	{
+		ValueTask<T> GetOrAddAsync<T>(string key, Func<CancellationToken, ValueTask<T>> factory, 
+			IEnumerable<string>? tags = null, TimeSpan? absoluteExpireTime = null);
+		ValueTask RemoveAsync(string key);
+		ValueTask RemoveByTagAsync(string tag);
+		ValueTask ResetAsync();
+	}
+}

Sufi.Demo.PeopleDirectory.Application/Contracts/Services/ICurrentUserService.cs

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+using Sufi.Demo.PeopleDirectory.Application.Contracts.Common;
+
+namespace Sufi.Demo.PeopleDirectory.Application.Contracts.Services
+{
+	public interface ICurrentUserService : IService
+	{
+		string? UserId { get; }
+	}
+}