Excessive API calls in displaying document list using Yorkie REST API

[hackerwins]

What would you like to be added:

When displaying the document list in CodePair, the Yorkie REST API is being excessively called.

• Upon entering the Workspace in CodePair, users can view the document list.
• To display this document list, CodePair Server first queries the DB for paging to retrieve the document list.
• Additionally, to show the last update time of the documents, the Yorkie REST API is called.
• The Yorkie REST API only provides an API to retrieve a single document, leading to multiple unnecessary API calls.

So we need to provide a bulk API that accepts multiple document keys and returns information for multiple documents.

Why is this needed:

The document list should be displayed without causing excessive REST API calls.

Additional Information:

codepair/backend/src/workspace-documents/workspace-documents.service.ts

Lines 75 to 88 in 34e599a

	const slicedDocumentList = documentList.slice(0, pageSize);
	const mergedDocumentList = await Promise.all(
	slicedDocumentList.map(async (doc) => {
	// Get updatedAt field from Yorkie server
	return this.findDocumentFromYorkie(doc.yorkieDocumentId).then((yorkieDoc) => {
	return {
	...doc,
	updatedAt: yorkieDoc.document?.updatedAt
	? moment(yorkieDoc.document?.updatedAt).toDate()
	: doc.updatedAt,
	};
	});
	})
	);

https://github.com/yorkie-https://github.com/yorkie-team/yorkie/blob/eadb194a7aae85bd41d60b9619c8689d41599bee/api/yorkie/v1/admin.proto#L38