RedisRequestLogger in RequestLogsFeature does not support NamespacePrefix

[LEIRONGHUA]

According to the online documentation https://docs.servicestack.net/request-logger#redis-request-logger settings, but Logging No Results

Environment：

• Redis Version：7.0.9
• ServiceStack.Server Version：6.8.0 ~ 6.8.1
• ServiceStack.Redis Version：6.8.0 ~ 6.8.1
• AspNetCore Version：7.0

Example code/Steps to reproduce:

//Register your ServiceStack AppHost as a .NET Core module
app.UseServiceStack(new AppHost
{
    AppSettings = new NetCoreAppSettings(Configuration) // Use **appsettings.json** and config sources
});

// ConfigureRedis.cs
public void Configure(IWebHostBuilder builder)
{
    builder.ConfigureServices((context, services) =>
    {
        const string key = "ServiceStackRedisConnection";
        var redisHost = context.Configuration.GetConnectionString(key) ?? throw new ArgumentNullException(key);
        services.AddSingleton<IRedisClientsManager>(new BasicRedisClientManager(redisHost));
    });
}

// ConfigureProfiling.cs
public void Configure(IWebHostBuilder builder)
{
    builder.ConfigureAppHost(host =>
    {
        host.Plugins.Add(new RequestLogsFeature
        {
            EnableResponseTracking = true, // 启用响应跟踪
            EnableRequestBodyTracking = true, // 启用请求体跟踪
            RequestLogger = new RedisRequestLogger(host.Container.Resolve<IRedisClientsManager>(), capacity: 1000)
        });

        host.Plugins.Add(new ProfilingFeature
        {
            IncludeStackTrace = true,
        });
    });
}

// appsettings.json
{
    "ConnectionStrings": {
        "ServiceStackRedisConnection": "redis://127.0.0.1:6379?db=12&NamespacePrefix=ServiceStack%3A"
    }
}

Output:

Command:
MGET urn:requestlogentry:3 urn:requestlogentry:2 urn:requestlogentry:1

Logging:
No Results

Bug Analysis:

The ServiceStack.Redis connection string sets the NamespacePrefix to "ServiceStack:", but the Log method of the ServiceStack.Host.RedisRequestLogger.cs class does not process the NamespacePrefix. So the cache key saved in Redis's Zset is wrong, for example: "urn:requestlogentry:1" is wrong, the correct one should be: "ServiceStack:urn:requestlogentry:1"
Please fix this bug, thanks!

[mythz]

I've changed it to use redis.UrnKey<T> in this commit to be more consistent, but NamespacePrefix does not provide "true" keyspace partitioning and any change to existing behavior can result in breaking changes, so we'll be reluctant in making changes where there's a potential for breaking changes. You can submit PRs to propose changes which we can evaluate on a per change basis.

Anyway this change is available in the latest v6.8.1 on MyGet.