Managing content item collections

1. A computer-implemented method, comprising:

receiving, by a computing system from a client device, a request for collection item metadata associated with a collection item, the request comprising a collection item identifier;

obtaining, by the computing system, a content item identifier corresponding to the collection item identifier;

identifying, by the computing system, content item metadata corresponding to the content item identifier of a content item;

retrieving, by the computing system, the collection item metadata using the collection item identifier;

adding, by the computing system, a first portion of the content item metadata to the collection item metadata; and

sending, by the computing system to the client device, the collection item metadata for the content item to be displayed to a user of the client device, without sending a second portion of the content item metadata, the second portion comprising at least one of a comment, an edit, a revision, or an annotation associated with the content item.

2. The computer-implemented method of claim 1 , further comprising:

embedding, by the computing system, the collection item metadata into a content item collection using the collection item identifier.

3. The computer-implemented method of claim 1 , wherein sending, by the computing system, the collection item metadata for the content item to be displayed to the user of the client device comprises:

generating a protected shared link that comprises an encrypted payload comprising the first portion of the content item identifier and the collection item identifier; and

sending the protected shared link and the collection item metadata to the client device.

4. The computer-implemented method of claim 3 , wherein the encrypted payload restricts access to the content item.

5. The computer-implemented method of claim 3 , wherein the encrypted payload is encrypting using a shared secret that is shared between components of the computing system.

6. The computer-implemented method of claim 3 , wherein generating the protected shared link that comprises the encrypted payload, comprises:

specifying a window of time during which the protected shared link is valid.

7. The computer-implemented method of claim 3 , further comprising:

receiving, by the computing system from the client device, a further request to obtain the content item, the request comprising the encrypted payload; and

validating, by the computing system, the encrypted payload by decrypting the encrypted payload and confirming that the user can obtain the content item.

8. A non-transitory computer readable medium including one or more sequences of instructions that, when executed by one or more processors, causes the one or more processors to perform operations, comprising:

identifying, by a computing system, a collection item identifier corresponding to a collection item;

obtaining, by the computing system, a content item identifier corresponding to the collection item identifier;

identifying, by the computing system, content item metadata corresponding to the content item identifier of a content item;

retrieving, by the computing system, collection item metadata using the collection item identifier;

adding, by the computing system, a first portion of the content item metadata to the collection item metadata; and

sending, by the computing system to a client device, the collection item metadata for the content item to be displayed to a user of the client device, without sending a second portion of the content item metadata, the second portion comprising at least one of a comment, an edit, a revision, or an annotation associated with the content item.

9. The non-transitory computer readable medium of claim 8 , further comprising:

embedding, by the computing system, the collection item metadata into a content item collection using the collection item identifier.

10. The non-transitory computer readable medium of claim 8 , wherein sending, by the computing system, the collection item metadata for the content item to be displayed to the user of the client device comprises:

generating a protected shared link that comprises an encrypted payload comprising the first portion of the content item identifier and the collection item identifier; and

sending the protected shared link and the collection item metadata to the client device.

11. The non-transitory computer readable medium of claim 10 , wherein the encrypted payload restricts access to the content item.

12. The non-transitory computer readable medium of claim 10 , wherein the encrypted payload is encrypting using a shared secret that is shared between components of the computing system.

13. The non-transitory computer readable medium of claim 10 , wherein generating the protected shared link that comprises the encrypted payload, comprises:

specifying a window of time during which the protected shared link is valid.

14. The non-transitory computer readable medium of claim 10 , further comprising:

receiving, by the computing system from the client device, a request to obtain the content item, the request comprising the encrypted payload; and

validating, by the computing system, the encrypted payload by decrypting the encrypted payload and confirming that the user can obtain the content item.

15. A system comprising:

one or more processors; and

a memory having programming instructions stored thereon, which, when executed by the one or more processors, causes a computing system to perform one or more operations comprising:

receiving, from a client device, a request for collection item metadata associated with a collection item, the request comprising a collection item identifier;

obtaining a content item identifier corresponding to the collection item identifier;

identifying content item metadata corresponding to the content item identifier of a content item;

retrieving the collection item metadata using the collection item identifier;

adding a first portion of the content item metadata to the collection item metadata; and

sending, to the client device, the collection item metadata for the content item to be displayed to a user of the client device, without sending a second portion of the content item metadata, the second portion comprising at least one of a comment, an edit, a revision, or an annotation associated with the content item.

16. The system of claim 15 , wherein the one or more operations further comprise:

embedding the collection item metadata into a content item collection using the collection item identifier.

17. The system of claim 15 , wherein sending the collection item metadata for the content item to be displayed to the user of the client device comprises:

generating a protected shared link that comprises an encrypted payload comprising the first portion of the content item identifier and the collection item identifier; and

sending the protected shared link and the collection item metadata to the client device.

18. The system of claim 17 , wherein the encrypted payload is encrypting using a shared secret that is shared between components of the computing system.

19. The system of claim 17 , wherein generating the protected shared link that comprises the encrypted payload, comprises:

specifying a window of time during which the protected shared link is valid.

20. The system of claim 17 , wherein the one or more operations further comprise:

receiving, from the client device, a further request to obtain the content item, the request comprising the encrypted payload; and

validating the encrypted payload by decrypting the encrypted payload and confirming that the user can obtain the content item.