What are Health Checks in ASP.NET Core? See Example

Health Checks in ASP.NET Core allow developers to monitor the health and availability of applications and their dependencies (like databases, APIs, or services). They help ensure high reliability and uptime.

Key Features:

• Check the status of app components and dependencies
• Supports custom and built-in health checks
• Integrates with monitoring tools and dashboards
• Exposes endpoints for automated health monitoring
• Improves reliability and operational awareness

Example:
Add Health Checks in Program.cs:

builder.Services.AddHealthChecks()
    .AddSqlServer(connectionString)
    .AddCheck<CustomHealthCheck>("custom_check");

var app = builder.Build();
app.MapHealthChecks("/health");
app.Run();

Custom Health Check example:

public class CustomHealthCheck : IHealthCheck
{
    public Task<HealthCheckResult> CheckHealthAsync(
        HealthCheckContext context, CancellationToken cancellationToken = default)
    {
        bool isHealthy = true; // Your logic
        return Task.FromResult(isHealthy ? HealthCheckResult.Healthy() : HealthCheckResult.Unhealthy());
    }
}

Health Checks in ASP.NET Core help monitor application health proactively, ensuring better uptime and faster troubleshooting.

Citations:

• Learn more on Savanka
• Official ASP.NET Core Documentation