Method, apparatus, and computer program product for initiating and executing a group based communication browser session and rendering a group based communication interface

1. An apparatus for initiating a group-based communication browser session, the apparatus comprising at least one processor and at least one non-transitory memory including program code, the at least one non-transitory memory and the program code configured to, with the at least one processor, cause the apparatus to at least:

responsive to a transition by the apparatus from online status to offline status or from offline status to online status, determine whether a group-based communication service cache is available;

in circumstances where the group-based communication service cache is available, fetch a group-based application asset set from the group-based communication service cache responsive to the group-based communication browser session initiation request, wherein the group-based application asset set comprises a plurality of non-group-specific media;

in circumstances where the group-based communication service cache is not available, render an error message;

determine whether a group-based communication browser cache is available;

in circumstances where the group-based communication browser cache is available, fetch a group-based communication object set from the group-based communication browser cache based on a group-based communication browser cache hydration policy and responsive to the group-based communication browser session initiation request, wherein the group-based communication object set comprises at least one group-based message, and

wherein the group-based communication browser cache hydration policy defines conditions for fetching data from a group-based communication cache or a group-based communication repository and defines a plurality of types of cached data to be fetched under a corresponding plurality of different conditions, based on the group-based communication browser session initiation request; and

render a group-based communication interface using at least the fetched group-based application asset set and the fetched group-based communication object set.

2. The apparatus of claim 1 , wherein the rendering further uses a placeholder object set rendered in place of a group-based communication object set not available in the group-based communication browser cache.

3. The apparatus of claim 2 , wherein the memory including the program code is further configured to, with the at least one processor, cause the apparatus to:

fetch the group-based communication object set not available in the group-based communication browser cache from a group-based communication repository.

4. The apparatus of claim 3 , wherein the memory including the program code is further configured to, with the at least one processor, cause the apparatus to:

store the fetched group-based communication object set from the group-based communication browser cache to a group-based communication store;

store the fetched group-based application asset set to the group-based communication store; and

store the fetched group-based communication object set not available in the group-based communication browser cache to the group-based communication store.

5. The apparatus of claim 4 , wherein the memory including the program code is further configured to, with the at least one processor, cause the apparatus to:

selectively store, to the group-based communication browser cache and based on a pre-defined group-based communication browser cache retention policy:

one or more cached group-based communication objects of the fetched group-based communication object set from the group-based communication browser cache, and

one or more un-cached group-based communication objects of the fetched group-based communication object set not available in the group-based communication browser cache.

6. The apparatus of claim 4 , wherein the memory including the program code is further configured to, with the at least one processor, cause the apparatus to:

receive a request to render an additional group-based communication object;

determine whether the additional group-based communication object is available in the group-based communication store;

in circumstances where the additional group-based communication object is available in the group-based communication store, fetch the additional group-based communication object from the group-based communication store;

in circumstances where the additional group-based communication object is not available in the group-based communication store, determine whether the additional group-based communication object is available in the group-based communication browser cache;

in circumstances where the additional group-based communication object is available in the group-based communication browser cache, fetch the additional group-based communication object from the group-based communication browser cache; and

in circumstances where the additional group-based communication object is not available in the group-based communication browser cache, fetch the additional group-based communication object from the group-based communication repository.

7. The apparatus of claim 6 , further comprising:

in circumstances where the additional group-based communication object is not available in the group-based communication store, store the additional group-based communication object to the group-based communication store after fetching the additional group-based communication object.

8. The apparatus of claim 1 , wherein the memory including the program code is further configured to, with the at least one processor, cause the apparatus to:

receive a version indicator of one or more group-based communication objects locally stored from a group-based communication server;

compare a version indicator previously stored in a local storage to the received version indicator;

determine that the version indicator previously stored in the local storage and the received version indicator do not indicate a same version;

delete the one or more group-based communication objects locally stored;

fetch one or more group-based communication objects corresponding to the received version indicator from a group-based communication repository associated with the group-based communication server;

determine that the group-based communication browser session does not have a window focus; and

re-render the group-based communication interface using at least the fetched one or more group-based communication objects corresponding to the received version indicator.

9. A method for initiating a group-based communication browser session in a group-based communication system comprising a group-based communication server, a client device, and a plurality of group-based communication channels, the method comprising:

receiving a group-based communication browser session initiation request;

responsive to a transition by the apparatus from online status to offline status or from offline status to online status, determining whether a group-based communication service cache is available;

in circumstances where the group-based communication service cache is available, fetching a group-based application asset set from the group-based communication service cache responsive to the group-based communication browser session initiation request, wherein the group-based application asset set comprises a plurality of non-group-specific media;

in circumstances where the group-based communication service cache is not available, render an error message;

determining whether a group-based communication browser cache is available;

in circumstances where the group-based communication browser cache is available, fetching a group-based communication object set from the group-based communication browser cache based on a group-based communication browser cache hydration policy and responsive to the group-based communication browser session initiation request, wherein the group-based communication object set comprises at least one group-based message, and

wherein the group-based communication browser cache hydration policy defines conditions for fetching data from a group-based communication cache or a group-based communication repository and defines a plurality of types of cached data to be fetched under a corresponding plurality of different conditions, based on the group-based communication browser session initiation request; and

rendering a group-based communication interface using at least the fetched group-based application asset set and the fetched group-based communication object asset.

10. The method of claim 9 , wherein the rendering further uses a placeholder object set rendered in place of a group-based communication object set not available in the group-based communication browser cache.

11. The method of claim 10 , further comprising:

fetching the group-based communication object set not available in the group-based communication browser cache from a group-based communication repository.

12. The method of claim 11 , further comprising:

storing the fetched group-based communication object set from the group-based communication browser cache to a group-based communication store;

storing the fetched group-based application asset set to the group-based communication store; and

storing the fetched group-based communication object set not available in the group-based communication browser cache to the group-based communication store.

13. The method of claim 12 , further comprising:

selectively storing, to the group-based communication browser cache and based on a pre-defined group-based communication browser cache retention policy:

one or more cached group-based communication objects of the fetched group-based communication object set from the group-based communication browser cache, and

one or more un-cached group-based communication objects of the fetched group-based communication object set not available in the group-based communication browser cache.

14. The method of claim 12 , further comprising:

receiving a request to render an additional group-based communication object;

determining whether the additional group-based communication object is available in the group-based communication store;

in circumstances where the additional group-based communication object is available in the group-based communication store, fetching the additional group-based communication object from the group-based communication store;

in circumstances where the additional group-based communication object is not available in the group-based communication store, determining whether the additional group-based communication object is available in the group-based communication browser cache;

in circumstances where the additional group-based communication object is available in the group-based communication browser cache, fetching the additional group-based communication object from the group-based communication browser cache; and

in circumstances where the additional group-based communication object is not available in the group-based communication browser cache, fetching the additional group-based communication object from the group-based communication repository.

15. The method of claim 14 , further comprising:

in circumstances where the additional group-based communication object is not available in the group-based communication store, storing the additional group-based communication object to the group-based communication store after fetching the additional group-based communication object.

16. The method of claim 14 , further comprising:

receiving a version indicator of one or more group-based communication objects locally stored from a group-based communication server;

comparing a version indicator previously stored in a local storage to the version indicator received;

determining that the version indicator previously stored in the local storage and the version indicator received do not indicate a same version;

deleting the one or more group-based communication objects locally stored;

fetching one or more group-based communication objects corresponding to the received version indicator from a group-based communication repository associated with the group-based communication server;

determining that the group-based communication browser session does not have a window focus; and

re-rendering the group-based communication interface using at least the fetched one or more group-based communication objects corresponding to the received version indicator.