Bits of .NET

API returns same data for 10 minutes. Still hitting database every request.

// Program.cs
builder.Services.AddResponseCaching();

var app = builder.Build();
app.UseResponseCaching();

// Controller
[ResponseCache(Duration = 600)] // 10 minutes
public IActionResult GetProducts()
{
    return Ok(_db.Products.ToList());
}

Headers: Sets Cache-Control headers automatically. Browser + server cache.

Vary: Cache different responses per user: VaryByHeader = "Authorization"

Disable: [ResponseCache(NoStore = true)] for dynamic data.