### C# Foundatio JobBase Example

Source: https://github.com/foundatiofx/foundatio.azurestorage/blob/main/README.md

Demonstrates creating a basic job by inheriting from JobBase, implementing RunInternalAsync, and running the job.

```csharp
using System.Threading.Tasks;
using Foundatio.Jobs;

public class HelloWorldJob : JobBase {
  public int RunCount { get; set; }

  protected override Task<JobResult> RunInternalAsync(JobContext context) {
     RunCount++;
     return Task.FromResult(JobResult.Success);
  }
}

// Usage examples:
// var job = new HelloWorldJob();
// await job.RunAsync(); // job.RunCount = 1;
// await job.RunContinuousAsync(iterationLimit: 2); // job.RunCount = 3;
// await job.RunContinuousAsync(cancellationToken: new CancellationTokenSource(10).Token); // job.RunCount > 10;
```

--------------------------------

### C# Foundatio QueueJobBase Example

Source: https://github.com/foundatiofx/foundatio.azurestorage/blob/main/README.md

Illustrates a job that processes entries from a queue, inheriting from QueueJobBase and implementing ProcessQueueEntryAsync. Includes setup and triggering via a queue.

```csharp
using System.Threading.Tasks;
using Foundatio.Jobs;
using Foundatio.Queues;

public class HelloWorldQueueItem {
  public string Message { get; set; }
}

public class HelloWorldQueueJob : QueueJobBase<HelloWorldQueueItem> {
  public int RunCount { get; set; }

  public HelloWorldQueueJob(IQueue<HelloWorldQueueItem> queue) : base(queue) {}

  protected override Task<JobResult> ProcessQueueEntryAsync(QueueEntryContext<HelloWorldQueueItem> context) {
     RunCount++;
     return Task.FromResult(JobResult.Success);
  }
}

// Usage examples:
// Register the queue for HelloWorldQueueItem.
// container.AddSingleton<IQueue<HelloWorldQueueItem>>(s => new InMemoryQueue<HelloWorldQueueItem>());

// IJob job = new HelloWorldQueueJob(queue);
// await job.RunAsync(); // job.RunCount = 0; (no data enqueued)

// await queue.EnqueueAsync(new HelloWorldQueueItem { Message = "Hello World" });
// await job.RunAsync(); // job.RunCount = 1;

// await queue.EnqueueAsync(new HelloWorldQueueItem { Message = "Hello World" });
// await queue.EnqueueAsync(new HelloWorldQueueItem { Message = "Hello World" });
// await job.RunUntilEmptyAsync(); // job.RunCount = 3;
```

--------------------------------

### C# Foundatio WorkItemHandlerBase Example

Source: https://github.com/foundatiofx/foundatio.azurestorage/blob/main/README.md

Shows how to create a work item handler by inheriting from WorkItemHandlerBase, processing data, and reporting progress.

```csharp
using System;
using System.Threading.Tasks;
using Foundatio.Jobs;

public class HelloWorldWorkItem {
  public string Data { get; set; }
}

public class HelloWorldWorkItemHandler : WorkItemHandlerBase {
  public override async Task HandleItemAsync(WorkItemContext ctx) {
    var workItem = ctx.GetData<HelloWorldWorkItem>();

    // To receive progress messages, inject IMessageSubscriber and subscribe to WorkItemStatus messages.
    await ctx.ReportProgressAsync(0, "Starting Hello World Job");
    await Task.Delay(TimeSpan.FromSeconds(2.5));
    await ctx.ReportProgressAsync(50, "Reading value");
    await Task.Delay(TimeSpan.FromSeconds(.5));
    await ctx.ReportProgressAsync(70, "Reading value");
    await Task.Delay(TimeSpan.FromSeconds(.5));
    await ctx.ReportProgressAsync(90, "Reading value.");
    await Task.Delay(TimeSpan.FromSeconds(.5));
    await ctx.ReportProgressAsync(100, "Completed Hello World Job");
  }
}
```

--------------------------------

### Registering and Running Foundatio Jobs

Source: https://github.com/foundatiofx/foundatio.azurestorage/blob/main/README.md

Demonstrates how to register work item handlers and dependency injection for Foundatio's job processing system. It shows the setup for a shared job runner and how to enqueue messages.

```csharp
var handlers = new WorkItemHandlers();
handlers.Register<HelloWorldWorkItem, HelloWorldWorkItemHandler>();

// Register the handlers with dependency injection.
container.AddSingleton(handlers);

// Register the queue for WorkItemData.
container.AddSingleton<IQueue<WorkItemData>>(s => new InMemoryQueue<WorkItemData>());

// The job runner will automatically look for and run all registered WorkItemHandlers.
new JobRunner(container.GetRequiredService<IJob>(), instanceCount: 2).RunInBackground();
```

--------------------------------

### IFileStorage Sample Usage

Source: https://github.com/foundatiofx/foundatio.azurestorage/blob/main/README.md

A basic example demonstrating the usage of the IFileStorage interface, specifically with InMemoryFileStorage. It shows how to save a file and retrieve its contents.

```csharp
using Foundatio.Storage;

IFileStorage storage = new InMemoryFileStorage();
await storage.SaveFileAsync("test.txt", "test");
string content = await storage.GetFileContentsAsync("test.txt");
```

--------------------------------

### C# Queue Client Usage

Source: https://github.com/foundatiofx/foundatio.azurestorage/blob/main/README.md

Illustrates the fundamental operations of the IQueue interface for enqueuing and dequeuing work items. This example shows how to add data to a queue and process it asynchronously.

```csharp
using Foundatio.Queues;

// Define a simple work item structure
public class SimpleWorkItem {
    public string Data { get; set; }
}

// Initialize an in-memory queue for demonstration
IQueue<SimpleWorkItem> queue = new InMemoryQueue<SimpleWorkItem>();

// Enqueue a work item
await queue.EnqueueAsync(new SimpleWorkItem {
    Data = "Hello"
});

// Dequeue a work item
var workItem = await queue.DequeueAsync();

// Process the dequeued work item (e.g., workItem.Data will be "Hello")
// Remember to complete the work item to remove it from the queue
// await queue.CompleteAsync(workItem);
```

--------------------------------

### IMetricsClient Sample Usage

Source: https://github.com/foundatiofx/foundatio.azurestorage/blob/main/README.md

Illustrates the basic usage of the IMetricsClient interface with InMemoryMetricsClient. It shows how to record counters, gauges, and timers.

```csharp
IMetricsClient metrics = new InMemoryMetricsClient();
metrics.Counter("c1");
metrics.Gauge("g1", 2.534);
metrics.Timer("t1", 50788);
```

--------------------------------

### Foundatio Messaging Overview

Source: https://github.com/foundatiofx/foundatio.azurestorage/blob/main/README.md

Illustrates publishing and subscribing to messages using Foundatio's messaging implementations. The sample uses an InMemoryMessageBus for local process communication.

```csharp
using Foundatio.Messaging;

// Define a sample message type
public class SimpleMessageA { public string Data { get; set; } }

// Initialize an in-memory message bus
IMessageBus messageBus = new InMemoryMessageBus();

// Subscribe to messages of type SimpleMessageA
await messageBus.SubscribeAsync<SimpleMessageA>(msg => {
  // Process received message
  Console.WriteLine($"Received: {msg.Data}");
});

// Publish a message of type SimpleMessageA
await messageBus.PublishAsync(new SimpleMessageA { Data = "Hello" });
```

--------------------------------

### C# Cache Client Usage

Source: https://github.com/foundatiofx/foundatio.azurestorage/blob/main/README.md

Demonstrates basic usage of the ICacheClient interface for setting and retrieving cached values asynchronously. This snippet highlights the core operations available across different cache implementations.

```csharp
using Foundatio.Caching;

// Initialize an in-memory cache client for demonstration
ICacheClient cache = new InMemoryCacheClient();

// Set a value with a key
await cache.SetAsync("test", 1);

// Get the value associated with the key
var value = await cache.GetAsync<int>("test");

// The 'value' variable will now hold the integer 1.
```

--------------------------------

### Foundatio Locks Overview

Source: https://github.com/foundatiofx/foundatio.azurestorage/blob/main/README.md

Demonstrates the usage of Foundatio's locking providers like CacheLockProvider and ThrottlingLockProvider. These implementations ensure exclusive resource access across processes, utilizing an ICacheClient for inter-process communication.

```csharp
using Foundatio.Lock;

// Initialize with InMemoryCacheClient and InMemoryMessageBus
ILockProvider locker = new CacheLockProvider(new InMemoryCacheClient(), new InMemoryMessageBus());
var testLock = await locker.AcquireAsync("test");
// ... perform operations while holding the lock
await testLock.ReleaseAsync();

// Initialize ThrottlingLockProvider to limit access to 1 per minute
ILockProvider throttledLocker = new ThrottlingLockProvider(new InMemoryCacheClient(), 1, TimeSpan.FromMinutes(1));
var throttledLock = await throttledLocker.AcquireAsync("test");
// ... perform operations with throttling
await throttledLock.ReleaseAsync();
```

--------------------------------

### Enqueuing a Work Item Message

Source: https://github.com/foundatiofx/foundatio.azurestorage/blob/main/README.md

Shows how to enqueue a custom work item message, such as HelloWorldWorkItem, into the Foundatio queue. It highlights the use of an extension method for serializing custom models to WorkItemData.

```csharp
// To trigger the job we need to queue the HelloWorldWorkItem message.
// This assumes that we injected an instance of IQueue<WorkItemData> queue

// NOTE: You may have noticed that HelloWorldWorkItem doesn't derive from WorkItemData.
// Foundatio has an extension method that takes the model you post and serializes it to the
// WorkItemData.Data property.
await queue.EnqueueAsync(new HelloWorldWorkItem { Message = "Hello World" });
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.