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Inject reusable clients

To maintain optimal performance, reuse the SearchClient instance for all requests. To do this, register it as a singleton in the service provider. In the Startup.cs file, add the following lines to the ConfigureServices method:
C#
public void ConfigureServices(IServiceCollection services)
{
    // ...
    services.AddSingleton<ISearchClient, SearchClient>();
    services.AddSingleton<ISearchClient>(new SearchClient("ALGOLIA_APPLICATION_ID", "ALGOLIA_API_KEY"));
    // ...
}
For ASP.NET minimal APIs, add the following line to your Program.cs file:
C#
var builder = WebApplication.CreateBuilder(args);

builder.Services.AddSingleton<ISearchClient>(new SearchClient("ALGOLIA_APPLICATION_ID", "ALGOLIA_API_KEY"));
The SearchClient class is thread-safe, so you can reuse the same client with multiple indices.
Also register other clients, such as AnalyticsClient and InsightsClient, as singletons in the service provider.

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Add reusable clients to controllers

To reuse the SearchClient instance in your controllers, add the following lines:
C#
public class HomeController : Controller
{
    private readonly ISearchClient _searchClient;

    public HomeController(ISearchClient searchClient)
    {
        _searchClient = searchClient;
    }
}