> For the complete documentation index, see [llms.txt](https://apex-studio.gitbook.io/apex-secure-vault-official-documentation./llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apex-studio.gitbook.io/apex-secure-vault-official-documentation./manual-save-and-load-api-reference.md).

# Manual Save & Load (API Reference)

For developers who require absolute control over exact save timings (e.g., saving only at checkpoints or between specific UI menus), Apex Secure Vault exposes a highly optimized, static Engine API.

#### Step 6.1: Standard Manual Trigger

You can call the save or load functions from anywhere in your project using SaveStateEngine:

```csharp
using UnityEngine;
using ApexStudio.ApexSecureVault;

public class CheckpointTrigger : MonoBehaviour
{
    private void OnTriggerEnter(Collider other)
    {
        if (other.CompareTag("Player"))
        {
            // Triggers a complete encryption and save cycle manually
            SaveStateEngine.SaveAll();
            Debug.Log("Checkpoint Reached! Game Saved.");
        }
    }

    public void RestartFromLastSave()
    {
        // Manually reloads data from the vault
        SaveStateEngine.LoadAll();
    }
}

```

#### Step 6.2: Asynchronous Saving (Performance Friendly)

If your game has massive amounts of data and you want to prevent any potential frame drops (stutters) during saving, you can use our built-in Async variants. These execute the encryption and file-writing processes on a separate background thread!

```csharp
using UnityEngine;
using System.Threading.Tasks;
using ApexStudio.ApexSecureVault;

public class AsyncSaveTrigger : MonoBehaviour
{
    public async void PerformBackgroundSave()
    {
        Debug.Log("Starting background save...");
        
        // This runs without blocking the Unity main thread
        await SaveStateEngine.SaveAllAsync(); 
        
        Debug.Log("Background save completed securely!");
    }
}

```


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