MANAGING BIG DATA ON DOCUMENT BASED NoSQL DATABASES

A document management system comprising:

• at least one local document manager, comprising at least one hardware processor connected to a local document storage;
• and
• at least one backup coordinator comprising at least one other hardware processor connected to the at least one local document manager and adapted to:
• continuously receive a plurality of change notifications from the at least one local document manager, each comprising change information describing a change in a document stored in the at least one local document manager's local document storage;
• and
• for each notification in the plurality of change notifications:
• select a backup agent from a plurality of backup agents connected to the at least one backup coordinator, wherein the backup agent comprises at least one third hardware processor;
• send a backup request to the backup agent comprising the change information, for the purpose of updating a copy of the document stored in a backup storage connected to the backup agent;
• wait for an acknowledgement message from the backup agent;
• and
• send another backup request to another backup agent selected from the plurality of backup agents upon a failure to receive the acknowledgement message within an identified amount of time after sending the backup request.