In-Memory Configuration

Configuration of .NET Core applications is typically performed using JSON files, but the Microsoft.Extensions.Configuration system is also able to bind to XML files, environment variables, and in-memory collections.

The following example illustrates how the configuration settings from the sample in the "Configuring Cache Policies" topic could be expressed at runtime using an in-memory dictionary instead of a JSON file.

using System;
using System.Collections.Generic;
using Microsoft.Extensions.Configuration;
using Scaleout.Client;

class InMemoryConfig
{
    static void Main(string[] args)
    {
        var conn = GridConnection.Connect("bootstrapGateways=localhost:721");

        var configDict = new Dictionary<string, string>
        {
            // customer and product cache configuration:
            {"CacheConfigName", "customers"},
            {"ExclusiveLockRetryIntervalMS", "5"},
            {"Timeout", "00:45:00"},
            {"ClientCacheEviction", "LRU"},
            {"ClientCacheCapacity", "1234"},
            {"CoherencyInterval", "00:00:00"},
        };

        var config = new ConfigurationBuilder()
                            .AddInMemoryCollection(configDict)
                            .Build();

        // Build ScaleOut cache:
        var customerCache = new CacheBuilder<string, string>("customers", conn, config)
                                                            .Build();
    }
}

This approach allows you to express the configuration structure as dictionary keys, separating different levels of the configuration with a colon. See the documentation for the .NET Core Configuration API for more information and examples.

Table of Contents

In-Memory Configuration