dataService.delete(sessionId);
        } finally {
            server.stop();
        }
    }

    public void test_execute_2instance() throws Exception {
        final CrawlerWebServer server1 = new CrawlerWebServer(7070);
        server1.start();
        final CrawlerWebServer server2 = new CrawlerWebServer(7071);
        server2.start();

        final String url1 = "http://localhost:7070/";

    participant Proxy as Proxy/Loadbalancer
    participant Server as FastAPI Server

    Client->>Proxy: HTTPS-Request<br/>Host: mysuperapp.com<br/>Pfad: /items

    Note over Proxy: Proxy fügt Forwarded-Header hinzu

    Proxy->>Server: HTTP-Request<br/>X-Forwarded-For: [client IP]<br/>X-Forwarded-Proto: https<br/>X-Forwarded-Host: mysuperapp.com<br/>Pfad: /items

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    }

    @Override
    public List<Server> getServers() {
        if (servers == null) {
            servers = new ArrayList<>();
        }

        return servers;
    }

    @Override
    public DefaultSettingsDecryptionRequest setServers(List<Server> servers) {
        this.servers = servers;

        return this;
    }

    @Override

    /**
     * Sets the servers whose passwords should be decrypted.
     *
     * @param servers The servers to decrypt, may be {@code null}.
     * @return This request, never {@code null}.
     */
    SettingsDecryptionRequest setServers(List<Server> servers);

    /**
     * Gets the proxies whose passwords should be decrypted.
     *
     * @return The proxies to decrypt, never {@code null}.
     */
    List<Proxy> getProxies();

## Install the Server Program { #install-the-server-program }

When you install FastAPI, it comes with a production server, Uvicorn, and you can start it with the `fastapi run` command.

But you can also install an ASGI server manually.

Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then you can install the server application.

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