Memory graph query engine with persisted storage

A computer-implemented method, comprising:

• receiving, at a first in-memory graph query engine, an electronic request;
• processing, by a first in-memory graph query engine, the received electronic request resulting in modified in-memory data, wherein processing the electronic request comprises:
• based on the electronic request being a request to add data to the first in-memory graph query engine, adding a new node and a new edge between nodes as a key-value pair, the key representing a vertex identifier and a schema element identifier that represents a property name of a node;
• based on the electronic request being a request to update data stored in the first in-memory graph query engine, updating a key-value pair in the first in-memory graph query engine;
• based on the electronic request being a request to remove data stored in the first in-memory graph query engine, deleting a key-value pair from the first in-memory graph query engine;
• based on processing the received electronic request, converting, by a data converter of the first in-memory graph query engine, the modified in-memory data to a document format, the data converter being configured to convert key-value pairs stored in the first in-memory graph query engine, to a document format with native types of a persistent storage;
• and
• outputting the modified in-memory data in the document format to the persistent storage.

A computer-implemented method, comprising:

• causing a first in-memory graph query engine to:
• receive an electronic request;
• process the received electronic request resulting in modified in-memory data, wherein processing the electronic request includes:
• based on the electronic request being a request to add data to the first in-memory graph query engine, adding a new node and a new edge between nodes as a key-value pair, the key representing a vertex identifier and a schema element identifier that represents a property name of a node;
• based on the electronic request being a request to update data stored in the first in-memory graph query engine, updating a key-value pair in the first in-memory graph query engine;
• based on the electronic request being a request to remove data stored in the first in-memory graph query engine, deleting a key-value pair from the first in-memory graph query engine;
• convert, by a data converter, the modified in-memory data to a document format, the data converter being configured to convert key-value pairs stored in the first in-memory graph query engine, to a document format with native types of a persistent storage;
• output the converted in-memory data in the document format to the persistent storage;
• and
• updating persistent storage data at the persistent storage with the converted in-memory data in the document format.

A computer-readable storage medium storing instructions that, when executed by a processor, cause the processor to:

• receive, at a first in-memory graph query engine, an electronic request;
• process, by a first in-memory graph query engine, the received electronic request resulting in modified in-memory data, wherein processing the electronic request comprises:
• based on the electronic request being a request to add data to the first in-memory graph query engine, adding a new node and a new edge between nodes as a key-value pair, the key representing a vertex identifier and a schema element identifier that represents a property name of a node;
• based on the electronic request being a request to update data stored in the first in-memory graph query engine, updating a key-value pair in the first in-memory graph query engine;
• based on the electronic request being a request to remove data stored in the first in-memory graph query engine, deleting a key-value pair from the first in-memory graph query engine;
• based on processing the received electronic request, convert, by a data converter of the first in-memory graph query engine, the modified in-memory data to a document format, the data converter being configured to convert key-value pairs stored in the first in-memory graph query engine, to a document format with native types of a persistent storage;
• and
• output the modified in-memory data in the document format to the persistent storage.