Two-tier storage protocol for committing changes in a storage system

A method comprising:

• receiving, from a client, a request to store an object within a storage system, the object comprising (a) data and (b) metadata corresponding to the data;
• transmitting the metadata to a metadata tier of the storage system;
• receiving a first acknowledgement that a metadata record has been created in the metadata tier for storing the metadata corresponding to the data, the metadata record being created with a pending status;
• responsive to receiving the first acknowledgement of the metadata record, transmitting the data to a data tier of the storage system;
• receiving a second acknowledgement that a data record has been created in the data tier for storing the data, the data record being created with a pending status;
• responsive to receiving the second acknowledgement that the data record has been created in the data tier, updating the metadata record to a committed status;
• responsive to determining that the metadata record in the metadata tier has a committed status, updating the data record in the data tier to a committed status.

A system comprising:

• one or more hardware processors;
• one or more non-transitory computer-readable media storing instructions which, when executed by the one or more hardware processors, cause execution of operations comprising:
• receiving, from a client, a request to store an object within a storage system, the object comprising (a) data and (b) metadata corresponding to the data;
• transmitting the metadata to a metadata tier of the storage system;
• receiving a first acknowledgement that a metadata record has been created in the metadata tier for storing the metadata corresponding to the data, the metadata record being created with a pending status;
• responsive to receiving the first acknowledgement of the metadata record,
• transmitting the data to a data tier of the storage system;
• receiving a second acknowledgement that a data record has been created in the data tier for storing the data, the data record being created with a pending status;
• responsive to receiving the second acknowledgement that the data record has been created in the data tier, updating the metadata record to a committed status;
• responsive to determining that the metadata record in the metadata tier has a committed status, updating the data record in the data tier to a committed status.