Implementing versioning for indexed documents in LlamaIndex involves creating a system that tracks changes to documents over time, ensuring that you can retrieve, update, and manage different versions seamlessly. The first step is to structure your data model to include a version identifier along with each document. You can have a simple schema where each document entry contains not only the content and metadata but also a version number that increments with each update. This way, every time you modify a document, you create a new version while keeping the old one intact.
Next, when adding or updating documents in LlamaIndex, make sure to increment the version number appropriately. For instance, if you have a document with an initial version of 1.0, the next time you make a change, save it as version 1.1. This helps keep track of the document's revision history. You should also consider implementing a mechanism for deleting or archiving old versions if they are no longer needed. This can help maintain your index size and improve search performance while ensuring older documents can still be accessed if necessary.
Finally, ensure that your retrieval process can handle these different versions effectively. When performing searches, you might want to allow users to specify which version they wish to retrieve. You can implement this by adding query parameters that filter results by version. Additionally, consider offering an API endpoint that lists versions of a given document so that users can easily see what exists and choose the appropriate one. This structured approach to versioning will not only help you manage your indexed documents better but also provide users with a clear method to access historical data.