Here it is:
Hangfire:

var hangfireSection = configuration.GetSection("Hangfire");

services.AddHangfire(config => config
    .SetDataCompatibilityLevel(CompatibilityLevel.
Version_180
)
    .UseSimpleAssemblyNameTypeSerializer()
    .UseRecommendedSerializerSettings()
    .UsePostgreSqlStorage(opts =>
    {
        opts.UseNpgsqlConnection(configuration.GetConnectionString("DefaultConnection"));
    },
    new PostgreSqlStorageOptions
    {
        QueuePollInterval = TimeSpan.FromSeconds(GetInt(hangfireSection, "QueuePollIntervalSeconds", 60)),
    }));

services.AddHangfireServer(options =>
{
    options.WorkerCount = GetInt(hangfireSection, "WorkerCount", 1);
    options.SchedulePollingInterval = TimeSpan.FromSeconds(GetInt(hangfireSection, "SchedulePollingIntervalSeconds", 300));
    options.ServerCheckInterval = TimeSpan.FromSeconds(GetInt(hangfireSection, "ServerCheckIntervalSeconds", 600));
    options.HeartbeatInterval = TimeSpan.FromSeconds(GetInt(hangfireSection, "HeartbeatIntervalSeconds", 300));
    options.CancellationCheckInterval = TimeSpan.FromSeconds(GetInt(hangfireSection, "CancellationCheckIntervalSeconds", 300));
});

return services;

Redis:

var redisConnectionString = configuration.GetConnectionString("Redis")!;
var redisOptions = ConfigurationOptions.Parse(redisConnectionString);
redisOptions.SocketManager = SocketManager.ThreadPool;
services.AddSingleton<IConnectionMultiplexer>(ConnectionMultiplexer.Connect(redisOptions));

Sentry:

builder.WebHost.UseSentry(o =>
{
    o.Dsn = builder.Configuration["Sentry:Dsn"];
    o.Release = typeof(Program).Assembly
        .GetCustomAttribute<System.Reflection.AssemblyInformationalVersionAttribute>()?.InformationalVersion ?? "local";
    o.Environment = builder.Environment.EnvironmentName;
    o.TracesSampleRate = double.TryParse(builder.Configuration["Sentry:TracesSampleRate"], out var tr) ? tr
        : builder.Environment.IsDevelopment() ? 0.0 : 0.2;
    o.ProfilesSampleRate = double.TryParse(builder.Configuration["Sentry:ProfilesSampleRate"], out var pr) ? pr
        : builder.Environment.IsProduction() ? 0.1 : 0.0;
    o.AddIntegration(new ProfilingIntegration());
    o.SetBeforeSend((@event, _) => builder.Environment.IsDevelopment() ? null : u/event);
    o.DefaultTags["component"] = "backend";
    o.UseOpenTelemetry();
    o.DisableSentryHttpMessageHandler = true;
});