StackExchange.Redis Multiplexer Architecture

1Concept

`ConnectionMultiplexer` manages a single shared multiplexed TCP socket connection to Redis, pipelining multiple concurrent threads through a single socket connection to avoid connection pool exhaustion.

2Architecture Diagram

1,000 Application Threads ──> [ ConnectionMultiplexer ] ── Single Multiplexed TCP Stream ──> Redis Server

3Code Example

using System;

public class RedisMultiplexerConceptDemo
{
    public static void Main()
    {
        Console.WriteLine("StackExchange.Redis best practices:");
        Console.WriteLine("1. Register ConnectionMultiplexer as a Singleton.");
        Console.WriteLine("2. Use IDatabase for operations.");
        Console.WriteLine("3. Never create new ConnectionMultiplexer instances per request.");
    }
}

4Expected Output

StackExchange.Redis best practices:
1. Register ConnectionMultiplexer as a Singleton.
2. Use IDatabase for operations.
3. Never create new ConnectionMultiplexer instances per request.

5Key Takeaways

• ✓Always register `IConnectionMultiplexer` as a Singleton in DI.
• ✓Pipelining enables high throughput without socket allocation overhead.
• ✓Monitor `redis.GetServer().Ping()` in health check pipelines.